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This chapter describes the commands you use to configure the downstream physical unit (DSPU) feature, which provides a gateway facility for downstream System Network Architecture (SNA) physical units (PUs). For DSPU configuration tasks and examples, refer to the "Configuring DSPU and SNA Service Point Support" chapter of the Router Products Configuration Guide.
Use the dspu activation-window global configuration command to define the number of activation request units (RUs) and response messages (such as ACTLUs or DDDLU NMVTs) that can be sent without waiting for responses from the remote PU. Use the no form of this command to return to the default window size.
dspu activation-window window-size
window-size | Number of outstanding unacknowledged activation RUs. The default is 5. |
The default window size is 5 outstanding unacknowledged activation RUs.
Global configuration
You do not typically need to define the number of activation RUs, but doing so can enhance activation performance in some situations. Increasing the DSPU activation window allows more LUs to become active in a shorter amount of time (assuming the required buffers for activation RUs are available). Conversely, decreasing the DSPU activation window limits the amount of buffers the DSPU can use during PU/LU activation. This command provides pacing to avoid depleting the router buffer pool during PU activation.
In the following example, the DSPU activation window is configured to 10. The DSPU can send up to 10 activation RUs without a response from the remote PU. However, the DSPU cannot send any additional activation RUs until a response is received. The DSPU can only have 10 activation RUs awaiting response at any given time.
dspu activation-window 10
Use the dspu default-pu global configuration command to enable the default PU feature to be used when a downstream PU attempts to connect, but does not match any of the explicit PU definitions. Use the no form of this command to disable the default PU feature.
dspu default-pu [window window-size] [maxiframe max-iframe]
window window-size | (Optional) Send and receive window sizes used across the link. The range is 1 to 127. The default is 7. |
maxiframe max-iframe | (Optional) Maximum size (in bytes) of an I-frame that can be transmitted or received across the link. The range is 64 bytes to 18,432 bytes. The default is 1472. |
The default window size is 7.
The default maximum I-frame size is 1472.
Global configuration
If the DSPU default PU is not defined, a connection attempt by a downstream PU that does not match any explicit PU definition is rejected.
The dspu default-pu command must be followed by at least one dspu lu command to define which pool the default LUs will be assigned from. Note that default LUs cannot be defined as dedicated LUs from a host.
The maximum I-frame size includes the SNA transmission header (TH), request header (RH), and request unit (RU), but does not include the DLC header. The DSPU feature segments frames being transmitted to fit within this frame size. If an XID is received from a remote PU which indicates that it supports a different maximum I-frame size, then the smaller of the two values is used.
In the following example, the default PU feature is enabled with a window size of 5 and a maximum I-frame size of 128. Each default PU can have up to 3 LUs assigned from the hostpool pool of LUs.
dspu pool hostpool host ibm3745 lu 2 254 dspu default-pu window 5 maxiframe 128 dspu lu 2 4 pool hostpool
Use the dspu enable-host interface configuration command to enable an X.121 subaddress for use by upstream host connections via QLLC. Use the no form of this command to disable the X.121 subaddress.
dspu enable-host qllc x121-subaddress
qllc | Required keyword for QLLC data link control. |
x121-subaddress | The X.121 subaddress. |
No default X.121 sub-address is specified.
Interface configuration
In the following example, X.121 subaddress 320108 is enabled for use by upstream host connections:
interface serial 0 encapsulation x35 x25 address 3202 x25 map qllc 320112 dspu enable-host qllc 320108
A dagger () indicates that the command is documented in another chapter.
dspu host (QLLC)
x25 map qllc
Use the dspu enable-host interface configuration command to enable an SDLC address for use by upstream host connections. Use the no form of this command to cancel the definition.
dspu enable-host sdlc sdlc-address
sdlc | Required keyword for SDLC data link control. |
sdlc-address | SDLC address. |
No default SDLC address is specified.
Interface configuration
In the following example, SDLC address c1 is enabled for use by upstream host connections:
interface serial 0 encapsulation sdlc sdlc role secondary sdlc address C1 dspu enable-host sdlc C1
sdlc address
sdlc role
Use the dspu enable-host interface configuration command to enable a local SAP on Token Ring, Ethernet, or Frame Relay interfaces for use by upstream hosts. Use the no form of this command to cancel the definition.
dspu enable-host [lsap local-sap]
lsap | (Optional) Specifies that the local SAP will be activated as an upstream SAP for both receiving incoming connection attempts and for starting outgoing connection attempts. |
local-sap | (Optional) Local SAP address. The default is 12. |
The default local SAP address is 12.
Interface configuration
In the following example, the local SAP address 10 on Token Ring interface 0 is enabled for use by upstream host connections:
interface tokenring 0 dspu enable-host lsap 10
dspu host (Frame Relay)
dspu host (Token Ring, Ethernet, FDDI, RSRB)
Use the dspu enable-pu interface configuration command to enable an Ethernet, Frame Relay, Token Ring, or FDDI address for use by downstream PU connections. Use the no form of this command to disable the connection.
dspu enable-pu [lsap local-sap]
lsap local-sap | (Optional) Local SAP address used by the DSPU to establish connection with the remote host. The default local SAP address is 8. |
The default local SAP address is 8.
Interface configuration
This command first appeared in Cisco IOS Release 10.3.
The following example demonstrates the configuration of a downstream PU via Token Ring and Ethernet:
interface tokenring 0 ring-speed 16 dspu enable-pu lsap 8 interface ethernet 0 dspu enable-pu lsap 8
dspu pu (Frame Relay)
dspu pu (Token Ring, Ethernet, FDDI, RSRB)
Use the dspu enable-pu interface configuration command to enable an X.121 subaddress for use by downstream PU connections via QLLC. Use the no form of this command to cancel the definition.
dspu enable-pu qllc x121-sub-addr
qllc | Required keyword for QLLC data link control. |
x121-sub-addr | A variable-length X.121 address. It is assigned by the X.25 network service provider. |
No default address is assigned.
Interface configuration
The following command enables an X.121 subaddress for use by downstream PU connections:
interface serial 0 encapsulation x25 x25 address 3201 x25 map qllc 320208 dspu enable-pu qllc 08
dspu enable-host (QLLC)
x25 map qllc
Use the dspu enable-pu interface configuration command to enable an SDLC address for use by downstream PU connections. Use the no form of this command to disable the connection.
dspu enable-pu sdlc sdlc-addr
sdlc | Required keyword for SDLC data link control. |
sdlc-addr | SDLC address. |
No default address is specified.
Interface configuration
The following command enables a DSPU downstream connection:
interface serial 0 encapsulation x25 sdlc role primary sdlc address c1 dspu enable-pu sdlc c1
dspu host (SDLC)
dspu pu (SDLC)
sdlc address
sdlc role
Use the dspu host global configuration command to define a DSPU host over a Frame Relay connection. Use the no form of this command to cancel the definition.
dspu host host-name xid-snd xid dlci dlci-number [rsap remote-sap] [lsap local-sap]
host-name | The specified DSPU host. |
xid-snd xid | XID that will be sent to the host during connection establishment. The XID value is 8 hexadecimal digits that include both Block and ID numbers. For example, if the XID value is 05D00001, the Block number is 05D and the ID number is 00001. |
dlci dlci-number | Frame Relay data-link connection identifier (DLCI) number; a decimal number. |
rsap rsap-addr | Remote Service Access Provider address. |
lsap lsap-addr | Local Service Access Provider address |
interface slot/port | (Optional) Slot and port number of the interface. |
window window-size | (Optional) Send and receive window sizes used for the host link. The range is 1 to 127. |
maxiframe max-iframe | (Optional) Send and receive maximum I-frame sizes used for the host link. The range is 64 to 18432. The default is 1472. |
retries retry-count | (Optional) Number of times the DSPU attempts to retry establishing connection with remote host PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 255. |
retry-timeout retry-timeout | (Optional) Delay (in seconds) between DSPU attempts to retry establishing connection with remote host PU. The range is 1 to 600 seconds. The default is 30. |
focalpoint | (Optional) Specifies that the host link will be used for the focal point support. |
The default remote-sap is 4.
The default local-sap is 12.
The default window-size is 7.
The default max-iframe is 1472.
The default retry-count is 255.
The default retry-timeout is 30.
Global configuration
The following command defines a DSPU host for Frame Relay support:
dspu host rosebud xid-snd 06500001 dlci 200 rsap 4 lsap 12
dspu enable-host (Token Ring, Ethernet, Frame Relay, FDDI)
dspu pool
Use the dspu host global configuration command to define a DSPU host over an X.25/QLLC connection. Use the no form of this command to delete the DSPU host definition.
dspu host host-name xid-snd xid x25 remote-x121-addr [qllc local-x121-sub-addr]
host-name | The specified DSPU host. |
xid-snd xid | XID that will be sent to the host during connection establishment. The xid value is 8 hexadecimal digits that include both block and ID numbers. For example, if the xid value is 05D00001, the Block number is 05D and the ID number is 00001. |
x25 remote-x121-addr | Remote X.121 address. |
qllc local-x121-sub-addr | (Optional) Local X.121 subaddress. |
interface slot/port | (Optional) Slot and port number of the interface. |
window window-size | (Optional) Send and receive window sizes used for the host link. The range is 1 to 127. |
maxiframe max-iframe | (Optional) Send and receive maximum I-frame sizes used for the host link. The range is 64 to 18432. The default is 1472. |
retries retry-count | (Optional) Number of times the DSPU attempts to retry establishing connection with remote host PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 255. |
retry-timeout retry-timeout | (Optional) Delay (in seconds) between DSPU attempts to retry establishing connection with remote host PU. The range is 1 to 600 seconds. The default is 30. |
focalpoint | (Optional) Specifies that the host link will be used for the focal point support. |
The default window-size is 7.
The default max-iframe is 1472.
The default retry-count is 255.
The default retry-timeout is 30.
Global configuration
The following command defines a DSPU host:
dspu host hosta xid-snd 065ffff0 x25 00000123005 qllc 12
dspu enable-host (QLLC)
dspu pool
dspu start
Use the dspu host global configuration command to define a DSPU host over an SDLC connection. Use the no form of this command to cancel the definition.
dspu host host-name xid-snd xid sdlc sdlc-addr [interface slot/port] [window window-size]
host-name | The specified DSPU host. |
xid-snd xid | XID that will be sent to the host during connection establishment. The XID value is 8 hexadecimal digits that include both Block and ID numbers. For example, if the XID value is 05D00001, the Block number is 05D and the ID number is 00001. |
sdlc sdlc-addr | SDLC hexadecimal address. |
interface slot/port | (Optional) Slot and port number of the interface. |
window window-size | (Optional) Send and receive window sizes used for the host link. The range is 1 to 127. The default window size is 7. |
maxiframe max-iframe | (Optional) Send and receive maximum I-frame sizes used for the host link. The range is 64 to 18432. The default is 1472. |
retries retry-count | (Optional) Number of times the DSPU attempts to retry establishing connection with remote host PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 255. |
retry-timeout retry-timeout | (Optional) Delay (in seconds) between DSPU attempts to retry establishing connection with remote host PU. The range is 1 to 600 seconds. The default is 30. |
focalpoint | (Optional) Specifies that the host link will be used for the focal point support. |
The default window size is 7.
The default maximum I-frame is 1472.
The default retry-count is 255.
The default retry timeout is 30.
Global configuration
The following command defines a DSPU host for SDLC:
dspu host hosta xid-snd 065ffff0 sdlc c1
dspu enable-host (SDLC)
dspu pool
Use the dspu host global configuration command to define a DSPU host over TokenRing, Ethernet, or RSRB connections. Use the no form of this command to cancel the definition.
dspu host host-name xid-snd xid rmac remote-mac [rsap remote-sap] [lsap local-sap]
host-name | The specified DSPU host. |
xid-snd xid | XID that will be sent to the host during connection establishment. The XID value is 8 hexadecimal digits that include both Block and ID numbers. For example, if the XID value is 05D00001, the Block number is 05D and the ID number is 00001. |
rmac rmac | MAC address of the remote host PU. |
rsap remote-sap | (Optional) SAP address of the remote host PU. The default is 4. |
lsap local-sap | (Optional) Local SAP address used by the DSPU to establish connection with the remote host. |
interface slot/port | (Optional) Slot and port number of the interface. |
window window-size | (Optional) Send and receive window sizes used for the host link. The range is 1 to 127. |
maxiframe max-iframe | (Optional) Send and receive maximum I-frame sizes used for the host link. The range is 64 to 18432. The default is 1472. |
retries retry-count | (Optional) Number of times the DSPU attempts to retry establishing connection with remote host PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 255. |
retry-timeout retry-timeout | (Optional) Delay (in seconds) between DSPU attempts to retry establishing connection with remote host PU. The range is 1 to 600 seconds. The default is 30. |
focalpoint | (Optional) Specifies that the host link will be used for the focal point support. |
The default remote SAP address is 4.
The default local SAP address is 12.
The default window size is 7.
The default maximum I-frame is 1472.
The default retry-count is 255.
The default retry timeout is 30.
Global configuration
The local SAP address must be enabled by one of the following commands: dspu enable-host (Token Ring, Ethernet, Frame Relay, FDDI) lsap, dspu rsrb enable-host, or dspu rsrb enable-host lsap.
If an XID is received from a remote PU that indicates that it supports a different maximum I-frame size, then the smaller of the two values is used.
Alerts from downstream PUs will be forwarded to the focalpoint host. The focalpoint parameter must be included on only one dspu host command.
The following example shows the definition for a DSPU host with 254 LUs and a connection to be established across an RSRB link:
dspu rsrb 88 1 99 4000.ffff.0001 dspu rsrb enable-host lsap 10 dspu host ibm3745 xid 06500001 rmac 4000.3745.0001 lsap 10 dspu pool hostpool lu 2 253 host ibm3745
dspu enable-host (Token Ring, Ethernet, Frame Relay, FDDI)
dspu pool
dspu rsrb enable-host
dspu rsrb start
dspu start
Use the dspu lu global configuration command to define a dedicated LU or a range of LUs for an upstream host and a downstream PU. Use the no form of this command to cancel the definition.
dspu lu lu-start [lu-end] {host host-name host-lu-start | pool pool-name} [pu pu-name]
lu-start | Starting LU address in the range of LUs to be assigned from a pool or dedicated to a host. |
lu-end | (Optional) Ending LU address in the range of LUs to be assigned from a pool or dedicated to a host. |
host host-name host-lu-start | (Optional) Specifies that each LU in the range of LUs will be dedicated to a host LU host-name. The range of host LUs starts with the address host_lu_start. |
pool pool-name | (Optional) Specifies that each LU in the range of LUs will be assigned from the specified pool. |
pu pu-name | (Optional) The downstream PU for which this range of LUs is being defined. |
There are no default specifications.
Global configuration
If the dspu lu command immediately follows one of these commands:
dspu default-pu
dspu pu (Frame Relay)
dspu pu (QLLC)
dspu pu (SDLC)
dspu pu (Token Ring, Ethernet, FDDI, RSRB)
the dspu lu command is applied to that PU, and the pu keyword and pu-name are not required. If the keyword and argument are included, the LU defined by the dspu lu command will be applied to the named PU.
The pool and host parameters are mutually exclusive. You can define a range of LUs to be either assigned from a pool or dedicated to a host.
The following example defines downstream LUs as dedicated LUs. The downstream PU, ciscopu, has 3 downstream LUs with addresses 2, 3, and 4. When ciscopu establishes a connection with the DSPU, the three downstream LUs (2, 3, and 4) are dedicated to LUs 22, 23, and 24, respectively, from the IBM 3745 host.
dspu host ibm3745 xid-snd 065000001 rmac 4000.3745.0001 dspu pu ciscopu xid-rcv 05D00001 rmac 1000.5AED.1F53 dspu lu 2 4 host ibm3745 22
dspu default-pu
dspu host (Frame Relay)
dspu host (QLLC)
dspu host (SDLC)
dspu host (Token Ring, Ethernet, FDDI, RSRB)
dspu pool
dspu pu (Frame Relay)
dspu pu (QLLC)
dspu pu (SDLC)
dspu pu (Token Ring, Ethernet, FDDI, RSRB)
Use the dspu pool global configuration command to define a range of host LUs in an LU pool. Use the no form of this command to remove the definition.
dspu pool pool-name host host-name lu lu-start [lu-end] [inactivity-timeout
pool-name | Name identifier of the pool. |
host host-name | Name of the host that owns the range of host LUs in the pool. |
lu lu-start | Starting LU address in the range of host LUs in the pool. |
lu-end | (Optional) The ending address (inclusive) of the range of host LUs in the pool. If no ending address is specified, only one LU (identified by lu-start) will be defined in the pool. |
inactivity-timeout inactivity-minutes | (Optional) Interval of inactivity (in minutes) on either the SSCP-LU or LU-LU sessions, which will cause the downstream LU to be disconnected from the upstream LU. |
The inactivity-timeout is disabled.
Global configuration
You can include multiple dspu pool commands that specify the same pool name. In this way, an LU pool can include several LU ranges from the one host PU, or it can include LUs from different host PUs. The LUs from host host-name starting at lu-start and ending with lu-end, inclusive, will be included in the pool pool-name. For the LUs in this pool, if there is no traffic on either the SSCP-LU or LU-LU sessions for the inactivity-timeout number of minutes, the downstream LU will be disconnected from the upstream LU, and the upstream LU will be allocated to any downstream LU waiting for a session. A value of zero for inactivity minutes means no timeouts. (Note that the inactivity-timeout applies to all LUs in this pool, not just the LUs defined by this dspu pool command. The last value configured will be used.)
The following example defines a pool of host a pool LUs. A pool of 253 host LUs is defined with all LUs supplied from the ibm3745 host PU:
dspu host ibm3745 xid-snd 065000001 rmac 4000.3745.0001 dspu pool hostpool host ibm3745 lu 2 254
The following example defines multiple pools and defines a disjoint pool of host LUs. One pool with a total of 205 host LUs and second pool with a total of 48 host LUs are defined with all LUs supplied from the same ibm3745 host PU. Host LUs with addresses 2 to 201 and 250 to 254 are defined in hostpool1. Host LUs with addresses 202 to 249 are defined in hostpool2.
dspu host ibm3745 xid-snd 065000001 rmac 4000.3745.0001 dspu pool hostpool1 host ibm3745 lu 2 201 dspu pool hostpool2 host ibm3745 lu 202 249 dspu pool hostpool1 host ibm3745 lu 250 254
The following example defines a pool of LUs from multiple hosts. A pool of 506 host LUs is defined with 253 LUs supplied by the ibm3475 host PU and 253 supplied by the ibm3172 hostPU.
dspu host ibm3745 xid-snd 065000001 rmac 4000.3745.0001 dspu host ibm3172 xid 06500002 rmac 4000.3172.0001 dspu pool hostpool host ibm3745 lu 2 254 dspu pool hostpool host ibm3172 lu 2 254
dspu host (Frame Relay)
dspu host (QLLC)
dspu host (Token Ring, Ethernet, FDDI, RSRB)
dspu lu
Use the dspu pu global configuration command to define a DSPU host over a Frame Relay connection. Use the no form of this command to cancel the definition.
dspu pu pu-name dlci dlci-number [rsap remote-sap] [lsap local-sap] [xid-rcv xid]
pu-name | Name of the downstream PU. |
dlci dlci-number | Frame Relay data-link connection identifier (DLCI) number; a decimal number. |
rsap remote-sap | (Optional) SAP address of the downstream PU. The default is 4. |
lsap local-sap | (Optional) Local SAP address used by the DSPU to establish connection with the downstream PU. The default is 8. |
xid-rcv xid | (Optional) Specifies a match on XID. |
interface slot/port | (Optional) Slot and port number of the interface. |
window window-size | (Optional) Send and receive sizes used for the downstream PU link. The range is 1 to 127. The default is 7. |
maxiframe max-iframe | (Optional) Maximum I-frame that can be transmitted or received across the link. The range is 64 to 18,432. The default is 1472. |
retries retry-count | Number of times the DSPU attempts to retry establishing connection with downstream PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 4. |
retry-timeout retry-timeout | (Optional) Delay (in seconds) between DSPU attempts to retry establishing connection with downstream PU. The range is 1 to 600 seconds. The default is 30. |
The default remote-sap is 4.
The default local-sap is 8.
The default window-size is 7.
The default max-iframe is 1472.
The default retry-count is 4.
The default retry-timeout is 30.
Global configuration
The following example defines a downstream PU:
dspu pu pub dlci 8
dspu enable-pu (Token Ring, Ethernet, Frame Relay, FDDI)
dspu lu
Use the dspu pu global configuration command to explicitly define a downstream PU over an X.25 connection. Use the no form of this command to cancel the definition.
dspu pu pu-name x25 remote-x121-addr [qllc local-x121-sub-addr] [xid-rcv xid]
pu-name | Name of the downstream PU. |
x25 remote-x121-addr | Variable-length X.121 address. It is assigned by the X.25 network service provider. |
qllc local-x121-subaddr | (Optional) Local X.121 subaddress. |
xid-rcv xid | (Optional) Specifies a match on XID. |
interface slot/port | (Optional) Slot and port number of the interface. |
window window-size | (Optional) Send and receive sizes used for the downstream PU link. The range is 1 to 127. The default is 7. |
maxiframe max-iframe | (Optional) Maximum I-frame that can be transmitted or received across the link. The range is 64 to 18,432. The default is 1472. |
retries retry-count | Number of times the DSPU attempts to retry establishing connection with downstream PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 4. |
retry-timeout retry-timeout | (Optional) Delay (in seconds) between DSPU attempts to retry establishing connection with downstream PU. The range is 1 to 600 seconds. The default is 30. |
The default window-size is 7.
The default max-iframe is 1472.
The default retry-count is 4.
The default retry-timeout is 30.
Global configuration
The following command defines a downstream PU:
dspu pu testpu xid-rcv 05d00001 x25 32012 qllc 12
Use the dspu pu global configuration command to define a DSPU host over an SDLC connection. Use the no form of this command to cancel the definition.
dspu pu pu-name xid-rcv xid sdlc sdlc-addr [interface slot/port] [window window-size]
pu-name | Name of the downstream PU. |
xid-rcv xid | Specifies a match on XID. |
sdlc sdlc-addr | SDLC address. |
interface slot/port | (Optional) Slot and port number of the interface. |
window window-size | (Optional) Send and receive sizes used for the downstream PU link. The range is 1 to 127. The default is 7. |
maxiframe max-iframe | (Optional) Maximum I-frame that can be transmitted or received across the link. The range is 64 to 18,432. The default is 1472. |
retries retry-count | (Optional) Number of times the DSPU attempts to retry establishing connection with downstream PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 4. |
retry-timeout retry-timeout | (Optional) Delay (in seconds) between DSPU attempts to retry establishing connection with downstream PU. The range is 1 to 600 seconds. The default is 30. |
The default window-size is 7.
The default max-iframe is 1472.
The default retry-count is 4.
The default retry-timeout is 30.
Global configuration
The following command defines a downstream PU:
dspu pu testpu sdlc c1 interface serial 0
Use the dspu pu global configuration command to define an explicit downstream PU over Token Ring, Ethernet, or RSRB connections. Use the no form of this command to cancel the definition.
dspu pu pu-name [rmac remote-mac] [rsap remote-sap] [lsap local-sap] [xid-rcv xid]
pu-name | Name of the downstream PU. |
rmac remote-mac | (Optional) MAC address of the downstream PU. |
rsap remote-sap | (Optional) SAP address of the downstream PU. The default is 4. |
lsap local-sap | (Optional) Local SAP address used by the DSPU to establish connection with the downstream PU. The default is 8. |
xid-rcv xid | (Optional) Specifies a match on XID. |
interface slot/port | (Optional) Slot and port number of the interface. |
window window-size | (Optional) Send and receive sizes used for the downstream PU link. The range is 1 to 127. The default is 7. |
maxiframe max-iframe | (Optional) Maximum I-frame that can be transmitted or received across the link. The range is 64 to 18,432. The default is 1472. |
retries retry-count | Number of times the DSPU attempts to retry establishing connection with downstream PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 4. |
retry-timeout retry-timeout | (Optional) Delay (in seconds) between DSPU attempts to retry establishing connection with downstream PU. The range is 1 to 600 seconds. The default is 30. |
The default remote-sap is 4.
The default local-sap is 8.
The default window-size is 7.
The default max-iframe is 1472.
The default retry-count is 4.
The default retry-timeout is 30.
Global configuration
The local SAP address must be enabled by one of the following commands:
dspu enable-pu (Token Ring, Ethernet, Frame Relay, FDDI)
dspu rsrb enable-pu lsap
The send and receive maximum I-frame size includes the SNA TH and RH, but does not include the data link control header. The DSPU feature will segment frames being transmitted to fit within this frame size. If an XID is received from a remote PU which indicates that it supports a different maximum I-frame size, then the smaller of the two values is used
If you want the DSPU to attempt a ConnectOut to the remote node using the dspu start command, you must configure the rmac keyword and argument. If you want this PU to match against a ConnectIn attempt, then several combinations of rmac, rsap, xid-rcv are possible. The matching algorithms are as follows:
If an XID is received from a remote PU which indicates that it supports a different maximum I-frame size, then the smaller of the two values is used.
In the following example, a downstream PU is defined with only the MAC address and SAP address specified. A downstream PU that attempts an incoming connection to the DSPU will only be accepted if the remote MAC/SAP address matches the configured values for this downstream PU (and the proper local SAP address is enabled).
dspu pu ciscopu rmac 1000.5AED.1F53 rsap 20 dspu lu 2 5 pool hostpool interface tokenring 0 dspu enable-pu lsap 8
In the following example, a downstream PU is defined with only an xid-rcv value. Any downstream PU that attempts an incoming connection specifying the xid-rcv value, 05D00001, will be accepted without regard to remote MAC or SAP address (although the proper local SAP address must be enabled).
dspu pu ciscopu xid-rcv 05d00001 dspu lu 2 5 pool hostpool interface tokenring 0 dspu enable-pu lsap 8
In the following example, a downstream PU is defined with xid-rcv, rmac, and rsap parameters. Any downstream PU that attempts to connectIn to the DSPU must match all three configured values for the connection to be accepted (the proper local SAP address must also be enabled).
dspu pu ciscopu xid-rcv 05d00001 rmac 1000.5AED.1F53 rsap 20 dspu lu 2 5 pool hostpool interface tokenring 0 dspu enable-pu lsap 8
dspu enable-pu (Token Ring, Ethernet, Frame Relay, FDDI)
dspu lu
dspu rsrb enable-pu
dspu rsrb start
dspu start
Use the dspu rsrb global configuration command to define the local virtual ring, the virtual bridge, the target virtual ring, and the virtual MAC address that the DSPU feature will simulate at the RSRB. Use the no form of this command to cancel the definition.
dspu rsrb local-virtual-ring bridge-number target-virtual-ring virtual-macaddr
local-virtual-ring | DSPU local virtual ring number. |
bridge-number | Bridge number connecting the DSPU local virtual ring and the RSRB target virtual ring. The valid range is 1 to 15. |
target-virtual-ring | RSRB target virtual ring number. The RSRB target virtual ring corresponds to the ring-number parameter defined by a source-bridge ring-group command. |
virtual-macaddr | DSPU virtual MAC address. |
There are no default settings.
Global configuration
The bridge number parameter can be specified only once in a configuration.
Use the dspu rsrb command to enable DSPU host and downstream connections to be established across an RSRB link.
If the local-ack parameter is specified on the source-bridge remote-peer statement, DSPU will establish host connections across RSRB using local acknowledgment. DSPU cannot support local acknowledgment for downstream PU connections across RSRB.
The following example defines DSPU to start connection to host across RSRB link (without local acknowledgment). The DSPU is identified by its local ring number 88 and its virtual MAC address 4000.FFFF.0001. When the DSPU attempts an outgoing connection to the ibm3745 host, the connection will be established across the RSRB virtual ring 99.
source-bridge ring-group 99 source-bridge remote-peer 99 tcp 150.10.13.1 source-bridge remote-peer 99 tcp 150.10.13.2 dspu rsrb 88 1 99 4000.FFFF.0001 dspu rsrb enable-host lsap 10 dspu host ibm3745 xid-snd 06500001 rmac 4000.3745.0001 lsap 10 dspu rsrb start ibm3745 interface serial 0 ip address 150.10.13.1 255.255.255.0
The following example defines DSPU to start connection to host across RSRB link (with local acknowledgment). The DSPU is identified by its local ring number 88 and its virtual MAC address 4000.FFFF.0001. When the DSPU attempts an outward connection to the ibm3745 host, the connection will be established across the RSRB virtual ring 99 using RSRB local acknowledgment.
source-bridge ring-group 99 source-bridge remote-peer 99 tcp 150.10.13.1 source-bridge remote-peer 99 tcp 150.10.13.2 local-ack dspu rsrb 88 1 99 4000.FFFF.0001 dspu rsrb enable-host lsap 10 dspu host ibm3745 xid-snd 06500001 rmac 4000.3745.0001 lsap 10 dspu rsrb start ibm3745 interface serial 0 ip address 150.10.13.1 255.255.255.0
The following example defines DSPU to allow connection from downstream PU across RSRB link.The DSPU is identified by its local ring number 88 and its virtual MAC address 4000.FFFF.0001. The downstream PU will specify the DSPU virtual MAC address 4000.FFFF.0001 and SAP address 20 in its host definitions. The DSPU will accept incoming connections from the downstream PU across the RSRB virtual ring 99.
source-bridge ring-group 99 source-bridge remote-peer 99 tcp 150.10.13.1 source-bridge remote-peer 99 tcp 150.10.13.2 dspu rsrb 88 1 99 4000.FFFF.0001 dspu rsrb enable-pu lsap 20 dspu pu ciscopu xid-rcv 05D00001 lsap 20 interface serial 0 ip address 150.10.13.1 255.255.255.0
A dagger () indicates that the command is documented in another chapter.
dspu rsrb enable-host
dspu rsrb enable-pu
dspu rsrb start
source-bridge ring-group
source-bridge remote-peer
Use the dspu rsrb enable-host global configuration command to enable an RSRB SAP for use by DSPU host connections. Use the no form of this command to disable the RSRB SAP.
dspu rsrb enable-host [lsap local-sap]
lsap local-sap | (Optional) Specifies that the local SAP address will be activated as an upstream SAP for both receiving incoming connections attempts and for starting outgoing connection attempts. The default is 12. |
The default local SAP is 12.
Global configuration
In the following example, the local SAP address 10 of the RSRB is enabled for use by the ibm3745 host PU:
source-bridge ring-group 99 source-bridge remote-peer 99 tcp 150.10.13.1 source-bridge remote-peer 99 tcp 150.10.13.2 dspu rsrb 88 1 99 4000.FFFF.0001 dspu rsrb enable-host lsap 10 dspu host ibm3745 xid-snd 06500001 rmac 4000.3745.0001 lsap 10 interface serial 0 ip address 150.10.13.1 255.255.255.0
dspu host (Token Ring, Ethernet, FDDI, RSRB)
dspu rsrb
Use the dspu rsrb enable-pu global configuration command to enable an RSRB SAP for use by DSPU downstream connections. Use the no form of this command to disable the SAP.
dspu rsrb enable-pu [lsap local-sap]
lsap local-sap | (Optional) Specifies that the local SAP address will be activated as an upstream SAP for both receiving incoming connection attempts and for starting outgoing connection attempts. |
The default local SAP is 8.
Global configuration
In the following example, the local SAP address 20 of the RSRB is enabled for use by the ciscopu DSPU downstream PU:
source-bridge ring-group 99 source-bridge remote-peer 99 tcp 150.10.13.1 source-bridge remote-peer 99 tcp 150.10.13.2 dspu rsrb 88 1 99 4000.FFFF.0001 dspu rsrb enable-pu lsap 20 dspu pu ciscopu xid-rcv 05D00001 lsap 20
dspu pu (Token Ring, Ethernet, FDDI, RSRB)
dspu rsrb
Use the dspu rsrb start global configuration command to specify that an attempt will be made to connect to the remote resource defined by host name or pu name through the RSRB. Use the no form of this command to cancel the definition.
dspu rsrb start {host-name | pu-name}
host-name | Name of a host defined in a dspu host (Token Ring, Ethernet, FDDI, RSRB) command. |
pu-name | Name of a PU defined in a dspu pu (Token Ring, Ethernet, FDDI, RSRB) command. |
There are no default settings.
Global configuration
Before issuing this command, you must enable the correct local SAP with the appropriate enable command (dspu rsrb enable-host for a host resource, and dspu rsrb enable-pufor a PU resource.)
This command is only valid if the target MAC address has been defined in the resource. For a host resource, this not a problem because the MAC address is mandatory, but for a PU resource the MAC address is optional. The command will fail if the MAC address is missing.
In the following example, the DSPU will initiate a connection with the ibm3745 host PU across the RSRB link:
source-bridge ring-group 99 source-bridge remote-peer 99 tcp 150.10.13.1 source-bridge remote-peer 99 tcp 150.10.13.2 dspu rsrb 88 1 99 4000.FFFF.0001 dspu rsrb enable-host lsap 10 dspu host ibm3745 xid-snd 06500001 rmac 4000.3745.0001 lsap 10 dspu rsrb start ibm3745 interface serial 0 ip address 150.10.13.1 255.255.255.0
dspu host (Token Ring, Ethernet, FDDI, RSRB)
dspu pu (Token Ring, Ethernet, FDDI, RSRB)
dspu rsrb enable-host
dspu rsrb enable-pu
dspu rsrb
Use the dspu start interface configuration command to specify that an attempt will be made to connect to the remote resource defined by host name or pu name. Use the no form of this command to cancel the definition.
dspu start {host-name | pu-name}
host-name | Name of a host defined in a dspu host command. |
pu-name | Name of a PU defined in a dspu pu command. |
There are no default settings.
Interface configuration
Before issuing this command, you must enable the correct local SAP with the appropriate dspu enable-host or dspu enable-pu command.
This command is only valid if the target MAC address has been defined in the resource. For a host resource, this not a problem because specifying the MAC address is mandatory, but for a PU resource specifying the MAC address is optional. The command will fail if the MAC address is missing.
In the following example, the DSPU will initiate a connection with the ciscopu downstream PU on the Token Ring interface 0:
dspu pu ciscopu xid-rcv 05D00001 rmac 1000.5AED.1F53 lsap 20 interface tokenring 0 dspu enable-pu lsap 20 dspu start ciscopu
dspu enable-host (Token Ring, Ethernet, Frame Relay, FDDI)
dspu enable-host (QLLC)
dspu enable-host (SDLC)
dspu enable-pu (Token Ring, Ethernet, Frame Relay, FDDI)
dspu host (Frame Relay)
dspu host (QLLC)
dspu host (SDLC)
dspu pu (Frame Relay)
dspu pu (QLLC)
dspu pu (SDLC)
Use the lan-name interface configuration command to specify a name for the LAN that is attached to the interface. This name is included in any Alert sent to the SNA host when a problem occurs on this interface or LAN. Use the no form of this command to revert to the default name.
lan-name lan-name
lan-name | Name used to identify the LAN when you send Alerts to the SNA host. |
The default name used for the LAN is the name of the interface, such as tr0.
Interface configuration
The following example identifies a LAN:
lan-name LAN1
Use the location global configuration command to specify the physical location of the router. This information is included in the Vital Product Information, when this information is requested from an SNA host. Use the no form of this command to remove the physical location information.
location location-description
location-description | A description of the physical location of the router. This can be up to 50 characters long, and can include blanks. |
No default is specified.
Global configuration
The following example describes the location of a router:
location Building G, Level 4, Room 45
Use the show dspu privileged EXEC command to display the status of the DSPU feature.
show dspu [pool pool-name | [pu {pu-name |host-name} [all]]
pool pool-name | (Optional) Name of a pool of LUs (as defined by the dspu pool command). |
pu | (Optional) Name of defined PU (as defined by either the dspu pu (Token Ring, Ethernet, FDDI, RSRB) or the dspu host (Token Ring, Ethernet, FDDI, RSRB) command). |
host-name | Name of a host defined in a dspu host (Token Ring, Ethernet, FDDI, RSRB) command. |
pu-name | Name of a PU defined in a dspu pu (Token Ring, Ethernet, FDDI, RSRB) command. |
all | (Optional) Show a detailed status. |
Privileged EXEC
The following is sample output of the show dspu command. It shows a summary of the DSPU status.
Router# show dspu
dspu host HOST_NAMEA interface PU STATUS ssssssss FRAMES RECEIVED nnnnnn FRAMES SENT nnnnnn LUs CONFIGURED nnn LUs ACTIVE nnn dspu host HOST_NAMEB interface PU STATUS ssssssss FRAMES RECEIVED nnnnnn FRAMES SENT nnnnnn LUs CONFIGURED nnn LUs ACTIVE nnn dspu pu PU_NAMEE interface PU STATUS ssssssss FRAMES RECEIVED nnnnnn FRAMES SENT nnnnnn LUs CONFIGURED nnn LUs ACTIVE nnn dspu pu PU_NAMEF interface PU STATUS ssssssss FRAMES RECEIVED nnnnnn FRAMES SENT nnnnnn LUs CONFIGURED nnn LUs ACTIVE nnn
The following is sample output of the show dspu command with the pu keyword:
Router# show dspu pu putest
dspu pu PUTEST interface PU STATUS ssssssss RMAC remote_mac RSAP remote_sap LSAP local_sap XID xid RETRIES retry_count RETRY_TIMEOUT retry_timeout WINDOW window_size MAXIFRAME max_iframe FRAMES RECEIVED nnnnnn FRAMES SENT nnnnnn LUs CONFIGURED nnn LUs ACTIVE nnn
The following is sample output of the show dspu command with the all keyword:
Router# show dspu pu putest all
dspu pu PUTEST interface PU STATUS ssssssss RMAC remote_mac RSAP remote_sap LSAP local_sap XID xid RETRIES retry_count RETRY_TIMEOUT retry_timeout WINDOW window_size MAXIFRAME max_iframe FRAMES RECEIVED nnnnnn FRAMES SENT nnnnnn LU nn PEER PU HOST_NAMEA PEER LU nnn STATUS tttttttt FRAMES RECEIVED nnnnnn FRAMES SENT nnnnnn LU nnn PEER PU HOST_NAMEA PEER LU nnn STATUS tttttttt FRAMES RECEIVED nnnnnn, FRAMES SENT nnnnnn LU nnn PEER PU HOST_NAMEB PEER LU nnn STATUS tttttttt FRAMES RECEIVED nnnnnn, FRAMES SENT nnnnnn
The following shows a summary of the LUs in a pool:
Router# show dspu pool poolname
dspu pool poolname host HOST_NAMEA lu start-lu end-lu
The following shows the details of all the LUs in a pool:
Router# show dspu pool poolname all
dspu pool poolname host HOST_NAMEA lu start-lu end-lu DSPU POOL poolname INACTIVITY_TIMEOUT timeout-value lu nnn host HOST_NAMEA peer lu nnn pu PU_NAMEF status tttttttt lu nnn host HOST_NAMEA peer lu nnn pu PU_NAMEF status tttttttt lu nnn host HOST_NAMEA peer lu nnn pu PU_NAMEF status tttttttt
Use the show sna privileged EXEC command to display the status of the SNA Service Point feature.
show sna [pu host-name [all]]
pu | (Optional) Specifies the name of defined host (as defined by the sna host (Token Ring, Ethernet, FDDI, RSRB) or similar command). |
host-name | The name of a host defined in a sna host (Token Ring, Ethernet, FDDI, RSRB) or equivalent command. |
all | (Optional) Show a detailed status. |
Privileged EXEC
The following is sample output of the show sna command. It shows a summary of the SNA features status.
Router# show sna
sna host HOST_NAMEA TokenRing1 PU STATUS active FRAMES RECEIVED 00450 FRAMES SENT 00010 LUs CONFIGURED 0 LUs ACTIVE 0
The following is sample output of the show sna command with the pu keyword:
Router# show sna pu putest
sna host PUTEST TokenRing1 PU STATUS active RMAC 400000000004 RSAP 04 LSAP 04 XID 05d00001 RETRIES 255 RETRY_TIMEOUT 30 WINDOW 7 MAXIFRAME 1472 FRAMES RECEIVED 0450 FRAMES SENT 0010 LUs CONFIGURED 0 LUs ACTIVE 0
Since the all parameter refers to LUs under the PU, this has no significance for the Service Point host.
Use the sna enable host interface configuration command to enable an X.121 subaddress for use by the SNA Service Point on the interface. Use the no form of this command to disable SNA Service Point on the interface.
sna enable-host qllc x121-sub-address
qllc | Required keyword for QLLC data link control. |
x121-sub-address | The X.121 subaddress. |
No default X.121 sub-address is specified.
Interface configuration
In the following example, X.121 subaddress 320108 is enabled for use by host connections:
sna enable-host qllc 320108
A dagger () indicates that the command is documented in another chapter.
sna host (QLLC)
x25 map qllc
Use the sna enable-host interface configuration command to enable an SDLC address for use by m host connections. Use the no form of this command to cancel the definition.
sna enable-host sdlc sdlc-address
sdlc | Required keyword for SDLC data link control. |
sdlc-address | The SDLC address. |
No default SDLC address is specified.
Interface configuration
In the following example, SDLC address c1 is enabled for use by host connections:
encapsulation sdlc sdlc role secondary sdlc address C1 sna enable-host sdlc C1
A dagger () indicates that the command is documented in another chapter.
encapsulation sdlc
sna host (SDLC)
Use the sna enable host interface configuration command to enable SNA on the interface. Use the no form of this command to disable SNA on the interface.
sna enable-host [lsap lsap-addr]
lsap | (Optional) Activate a local SAP as an upstream SAP, for both receiving connectIn attempts and for starting connectOut attempts. |
lsap-addr | Local SAP. The default is 12. |
The default lsap parameter is 12.
Interface configuration
The following example enables SNA on the interface and specifies that the local SAP 10 will be activated as an upstream SAP:
sna enable-host lsap 10
show sna
sna host (Frame Relay)
sna host (Token Ring, Ethernet, FDDI, RSRB)
Use the sna host global configuration command define a link to an SNA host.
sna host host-name xid-snd xid dlci dlci-number [rsap remote-sap] [lsap local-sap]
host-name | The specified SNA host. |
xid-snd xid | The XID that will be sent to the host during connection establishment. The XID value is 8 hexadecimal digits that include both Block and ID numbers. For example, if the XID value is 05D00001, the Block number is 05D and the ID number is 00001. |
dlci dlci-number | .Frame Relay data-link connection identifier (DLCI) number; a decimal number. |
rsap remote-sap | (Optional) Specifies the SAP address of the remote host PU. The default is 4. |
lsap local-sap | (Optional) Specifies the local SAP address used by the SNA Service Point to establish connection with the remote host. |
interface slot/port | (Optional) The slot and port number of the interface. |
window window-size | (Optional) Specifies the send and receive window sizes used for the host link. The range is 1 to 127. The default window size is 7. |
maxiframe max-iframe | (Optional) Specifies the send and receive maximum I-frame sizes used for the host link. The range is 64 to 18432. The default is 1472. |
retries retry-count | (Optional) Specifies the number of times the SNA Service Point attempts to retry establishing connection with remote host PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 255. |
retry-timeout retry-timeout | (Optional) Specifies the delay (in seconds) between attempts to retry establishing connection with remote host PU. The range is 1 to 600 seconds. The default is 30. |
focalpoint | (Optional) Specifies that the host link will be used for the focal point support. |
The default remote SAP is 4.
The default local SAP is 12.
The default window size is 7.
The default maximum I-frame size is 1472.
The default retry count is 255.
The default retry timeout is 30.
Global configuration
The following command defines a link to an SNA host:
sna host CNM01 xid-snd 05d00001 dlci 200 rsap 4 lsap 4
sna enable-host (Token Ring, Ethernet, Frame Relay, FDDI)
sna start
Use the sna host global configuration command define a link to an SNA host.
sna host host-name xid-snd xid x25 remote-x121-addr [qllc local-x121-sub-addr]
host-name | The specified SNA host. |
xid-snd xid | The XID that will be sent to the host during connection establishment. The XID value is 8 hexadecimal digits that include both Block and ID numbers. For example, if the XID value is 05D00001, the Block number is 05D and the ID number is 00001. |
x25 remote-x121-addr | The SDLC address. |
qllc local-x121-sub-addr | (Optional) Specifies the SAP address of the remote host PU. The default is 4. |
interface slot/port | (Optional) The slot and port number of the interface. |
window window-size | (Optional) Specifies the send and receive window sizes used for the host link. The range is 1 to 127. |
maxiframe max-iframe | (Optional) Specifies the send and receive maximum I-frame sizes used for the host link. The range is 64 to 18432. The default is 1472. |
retries retry-count | (Optional) Specifies the number of times the SNA Service Point attempts to retry establishing connection with remote host PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 255. |
retry-timeout retry-timeout | (Optional) Specifies the delay (in seconds) between attempts to retry establishing connection with remote host PU. The range is 1 to 600 seconds. The default is 30. |
focalpoint | (Optional) Specifies that the host link will be used for the focal point support. |
The default window size is 7.
The default maximum I-frame size is 1472.
The default retry count is 255.
The default retry timeout is 30.
Global configuration
The following command defines a link to an SNA host:
sna host MLM1 xid-snd 05d00001 x25 320108 qllc 08
sna enable-host (QLLC)
sna start
Use the sna host global configuration command define a link to an SNA host.
sna host host-name xid-snd xid sdlc sdlc-addr [rsap remote-sap] [lsap local-sap]
host-name | The specified SNA host. |
xid-snd xid | The XID that will be sent to the host during connection establishment. The XID value is 8 hexadecimal digits that include both Block and ID numbers. For example, if the XID value is 05D00001, the Block number is 05D and the ID number is 00001. |
sdlc sdlc-addr | The SDLC address. |
rsap remote-sap | (Optional) Specifies the SAP address of the remote host PU. The default is 4. |
lsap local-sap | (Optional) Specifies the local SAP address used by the SNA Service Point to establish connection with the remote host. |
interface slot/port | (Optional) The slot and port number of the interface. |
window window-size | (Optional) Specifies the send and receive window sizes used for the host link. The range is 1 to 127. |
maxiframe max-iframe | (Optional) Specifies the send and receive maximum I-frame sizes used for the host link. The range is 64 to 18432. The default is 1472. |
retries retry-count | (Optional) Specifies the number of times the SNA Service Point attempts to retry establishing connection with remote host PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 255. |
retry-timeout retry-timeout | (Optional) Specifies the delay (in seconds) between attempts to retry establishing connection with remote host PU. The range is 1 to 600 seconds. The default is 30. |
focalpoint | (Optional) Specifies that the host link will be used for the focal point support. |
The default remote SAP is 4.
The default local SAP is 12.
The default window size is 7.
The default maximum I-frame size is 1472.
The default retry count is 255.
The default retry timeout is 30.
Global configuration
The following command defines a link to an SNA host:
sna host CNM01 xid-snd 05d00001 sdlc c1 rsap 4 lsap 4 focalpoint
Use the sna host global configuration command define a link to an SNA host.
sna host host-name xid-snd xid rmac remote-mac [rsap remote-sap] [lsap local-sap] [interface
host-name | The specified SNA host. |
xid-snd xid | The XID that will be sent to the host during connection establishment. The XID value is 8 hexadecimal digits that include both Block and ID numbers. For example, if the XID value is 05D00001, the Block number is 05D and the ID number is 00001. |
rmac rmac | The MAC address of the remote host PU. |
rsap remote-sap | (Optional) Specifies the SAP address of the remote host PU. The default is 4. |
lsap local-sap | (Optional) Specifies the local SAP address used by the SNA Service Point to establish connection with the remote host. |
interface slot/port | (Optional) The slot and port number of the interface. |
window window-size | (Optional) Specifies the send and receive window sizes used for the host link. The range is 1 to 127. |
maxiframe max-iframe | (Optional) Specifies the send and receive maximum I-frame sizes used for the host link. The range is 64 to 18432. The default is 1472. |
retries retry-count | (Optional) Specifies the number of times the SNA Service Point attempts to retry establishing connection with remote host PU. The range is 0 to 255 (0 = no retry attempts, 255 = infinite retry attempts). The default is 255. |
retry-timeout retry-timeout | (Optional) Specifies the delay (in seconds) between attempts to retry establishing connection with remote host PU. The range is 1 to 600 seconds. The default is 30. |
focalpoint | (Optional) Specifies that the host link will be used for the focal point support. |
The default remote SAP is 4.
The default local SAP is 12.
The default window size is 7.
The default maximum I-frame size is 1472.
The default retry count is 255.
The default retry timeout is 30.
Global configuration
The following command defines a link to an SNA host:
sna host CNM01 xid-snd 05d00001 rmac 4001.3745.1088 rsap 4 lsap 4 focalpoint
sna enable-host (Token Ring, Ethernet, Frame Relay, FDDI)
sna rsrb enable-host
sna rsrb start
sna start
Use the sna rsrb interface configuration command to specify the entities that the SNA feature will simulate at the remote source-route bridge. Use the no form of this command to cancel the specification.
sna rsrb local-virtual-ring bridge-number target-virtual-ring virtual-macaddr
local-virtual-ring | The local virtual ring. |
bridge-number | The virtual bridge number. |
target-virtual-ring | The target virtual ring. |
virtual-macaddr | The virtual MAC address. |
No defaults.
Interface configuration
You can specify the bridge number no more than once in any configuration.
The following example identifies a LAN:
sna rsrb 88 1 99 4000.FFFF.0001
Use the sna rsrb enable-host global configuration command to enable an RSRB SAP for use by SNA Service Point. Use the no form of this command to disable the RSRB SAP.
sna rsrb enable-host [lsap local-sap]
lsap local-sap | (Optional) Specifies that the local SAP address will be activated as an upstream SAP for both receiving incoming connections attempts and for starting outgoing connection attempts. The default is 12. |
The default local SAP address is 12
Global configuration
In the following example, the local SAP address 10 of the RSRB is enabled for use by the ibm3745 host PU:
source-bridge ring-group 99 source-bridge remote-peer 99 tcp 150.10.13.1 source-bridge remote-peer 99 tcp 150.10.13.2 sna rsrb 88 1 99 4000.FFFF.0001 sna rsrb enable-host lsap 10 sna host ibm3745 xid-snd 06500001 rmac 4000.3745.0001 lsap 10 interface serial 0 ip address 150.10.13.1 255.255.255.0
sna host (Token Ring, Ethernet, FDDI, RSRB)
Use the sna rsrb start global configuration command to specify that an attempt will be made to connect to the remote resource defined by host name through the RSRB. Use the no form of this command to cancel the definition.
sna rsrb start host-name
host-name | The name of a host defined in a sna host (Token Ring, Ethernet, FDDI, RSRB) or equivalent command. |
There are no default settings.
Global configuration
Before issuing this command, you must enable the correct local SAP with the appropriate enable command (sna rsrb enable-host.)
In the following example, the SNA Service Point will initiate a connection with the ibm3745 host PU across the RSRB link:
source-bridge ring-group 99 source-bridge remote-peer 99 tcp 150.10.13.1 source-bridge remote-peer 99 tcp 150.10.13.2 sna rsrb 88 1 99 4000.FFFF.0001 sna rsrb enable-host lsap 10 sna host ibm3745 xid-snd 06500001 rmac 4000.3745.0001 lsap 10 sna rsrb start ibm3745 interface serial 0 ip address 150.10.13.1 255.255.255.0
sna host (Token Ring, Ethernet, FDDI, RSRB)
sna rsrb
Use the sna start interface configuration command to initiate a connection to a remote resource. Use the no form of this command to cancel the connection attempt.
sna start [resource-name]
resource-name | Name of a host defined in a sna host command. |
No default is specified.
Interface configuration
Before issuing this command you must enable the correct local address using the appropriate sna enable host command
The following example initiates a connection to CNM01:
sna start CNM01
sna host (Frame Relay)
sna host (QLLC)
sna host (SDLC)
sna host (Token Ring, Ethernet, FDDI, RSRB)
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