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This chapter explains the function and syntax of the IBM network media translation commands. For more information about defaults and usage guidelines, see the corresponding chapter of the Cisco IOS Bridging and IBM Networking Command Reference, Volume 1, Release 12.1.
To enable the router to accept a call from any remote X.25 device, use the qllc accept-all-calls interface configuration command. To cancel the request, use the no form of this command.
qllc accept-all-callsSyntax Description
This command has no arguments or keywords.
To indicate the maximum size of the Systems Network Architecture (SNA) packet that can be sent or received on an X.25 interface configured for QLLC conversion, use the qllc largest-packet interface configuration command. To restore the default largest packet size, use the no form of this command.
qllc largest-packet virtual-mac-addr max-size
Syntax Description
virtual-mac-addr Virtual Media Access Control (MAC) address associated with the remote X.25 device, as defined using the x25 map qllc or x25 pvc qllc interface configuration commands. This address is written as a dotted triple of four-digit hexadecimal numbers. max-size Maximum size, in bytes, of the SNA packet that can be sent or received on the X.25 interface configured for QLLC conversion. This value agrees with the value configured in the remote SNA device. The valid range is 0 to 1024.
To enable a connection between a PU 2 on the LAN side and a front-end processor (FEP) running NPSI on the X.25 side, use the qllc npsi-poll interface configuration command. To disable this capability, use the no form of this command.
qllc npsi-poll virtual-mac-addr
Syntax Description
virtual-mac-addr MAC address associated with the remote X.25 device, as defined using the x25 map qllc or x25 pvc qllc interface configuration commands. This address is written as a dotted triple of four-digit hexadecimal numbers.
To enable a router configured for QLLC conversion to open a connection to the local Token Ring device on behalf of the remote X.25 device when an incoming call is received, use the qllc partner interface configuration command. To disable this capability, use the no form of this command.
qllc partner virtual-mac-addr mac-addr
Syntax Description
virtual-mac-addr MAC address associated with the remote X.25 device, as defined using the x25 map qllc or x25 pvc qllc interface configuration commands. This address is written as a dotted triple of four-digit hexadecimal numbers. mac-addr 48-bit MAC address of the Token Ring host that will communicate with the remote X.25 device.
To associate a service access point (SAP) value other than the default SAP value with a serial interface configured for X.25 communication and QLLC conversion, use the qllc sap interface configuration command. To return this SAP value to its default state, use the no form of this command.
qllc sap virtual-mac-addr ssap dsap
Syntax Description
virtual-mac-addr MAC address associated with the remote X.25 device, as defined using the x25 map qllc or x25 pvc qllc interface configuration commands. This address is written as a dotted triple of four-digit hexadecimal numbers. ssap Source SAP value. It can be a decimal number in the range 2 to 254. The default is 4. dsap Destination SAP value. It can be a decimal number in the range 2 to 254. The default is 4.
To enable QLLC conversion on a serial interface configured for X.25 communication, use the qllc srb interface configuration command. To disable QLLC conversion on the interface, use the no form of this command.
qllc srb virtual-mac-addr srn trn
Syntax Description
virtual-mac-addr MAC address associated with the remote X.25 device, as defined using the x25 map qllc or x25 pvc qllc interface configuration commands. It can be 1 to 15 digits long. srn Source ring number. This value defines a virtual ring for all of the remote X.25 devices attached to the QLLC interface. trn Target ring number. It must be a virtual ring group that has been defined with the source-bridge sdllc-local-ack global configuration command.
To associate an exchange ID (XID) value with the remote X.25 device that communicates through the Cisco IOS software using QLLC conversion, use the qllc xid interface configuration command. To disable XID processing for this address, use the no form of this command.
qllc xid virtual-mac-addr xid
Syntax Description
virtual-mac-addr MAC address associated with the remote X.25 device, as defined using the x25 map qllc or x25 pvc qllc interface configuration command. This address is written as a dotted triple of four-digit hexadecimal numbers. xid Combined XID IDBLK and XID IDNUM you are associating with the X.25 device at this X.121 address. This hexadecimal value must be four bytes (eight digits) in length.
To enable device-initiated connections for SDLLC, use the sdllc partner interface configuration command. This command must be specified for the serial interface that links to the serial line device. To cancel the original instruction, use the no form of this command.
sdllc partner mac-address sdlc-address
Syntax Description
mac-address MAC address of the Token Ring host. sdlc-address SDLC address of the serial device that will communicate with the Token Ring host.
To indicate the largest I-frame size that can be sent to or received from the LLC2 primary station, use the sdllc ring-largest-frame interface configuration command. To return to the default, use the no form of this command.
sdllc ring-largest-frame value
Syntax Description
value Frame size in bytes. Possible values include 516, 1500, 2052, 4472, 8144, 11407, and 17800. The default is 516 bytes.
To associate a SAP value other than the default SAP value with a serial interface configured for SDLLC, use the sdllc sap interface configuration command. To return this SAP value to its default state, use the no form of this command.
sdllc sap sdlc-address ssap dsap
Syntax Description
sdlc-address MAC address associated with the remote SDLC device. ssap Source SAP value. It must be in the range 1 to 254. The default is 4. dsap Destination SAP value. It must be in the range 1 to 254. The default is 4.
To indicate the largest information frame (I-frame) size that can be sent or received by the designated SDLC station, use the sdllc sdlc-largest-frame interface configuration command. To return to the default value, use the no form of this command.
sdllc sdlc-largest-frame address value
Syntax Description
address Address of the SDLC station that will communicate with the Token Ring host. value Largest frame size that can be sent or received by this SDLC station. The default is 265 bytes.
Syntax Description
xxxx.xxxx.xx00 MAC address to be assigned to the serial interface. lr SDLLC virtual ring number. bn SDLLC bridge number. tr SDLLC target ring number.
Syntax Description
address Address of the SDLC station associated with this interface. xxxxxxxx XID the Cisco IOS software will use to respond to XID requests received on the Token Ring (LLC2) side of the connection. This value must be 4 bytes (8 digits) in length and is specified with hexadecimal digits.
To display the current state of any QLLC connections, use the show qllc privileged EXEC command.
show qllcSyntax Description
This command has no arguments or keywords.
To display the current state of any current local acknowledgment connections, as well as any configured passthrough rings, use the show sdllc local-ack privileged EXEC command.
show sdllc local-ackSyntax Description
This command has no arguments or keywords.
To enable or disable QLLC local acknowledgment for all QLLC conversion connections, use the source-bridge qllc-local-ack global configuration command. To disable this capability, use the no form of this command.
source-bridge qllc-local-ackSyntax Description
This command has no arguments or keywords.
When specifying a point-to-point direct encapsulation connection, use the source-bridge remote-peer interface global configuration command. To disable previous interface assignments, use the no form of this command.
source-bridge remote-peer ring-group interface interface-name [mac-address] [lf size]
Syntax Description
ring-group Ring group number. This ring group number must match the number you have specified with the source-bridge ring-group command. The valid range is 1 to 4095. interface-name Name of the serial interface over which to send source-route bridged traffic. mac-address (Optional) MAC address for the interface you specify using the interface-name argument. This argument is required for nonserial interfaces. You can obtain the value of this MAC address by using the show interfaces command, and then scanning the display for the interface specified by interface-name. lf size (Optional) Maximum size frame to be sent to this remote peer. The Cisco IOS software negotiates all transit routes down to this size or lower. This argument is useful in preventing timeouts in end hosts by reducing the amount of data they have to transmit in a fixed interval. The legal values for this argument are 516, 1500, 2052, 4472, 8144, 11407, and 17800 bytes.
To activate local acknowledgment for SDLLC sessions on a particular interface, use the source-bridge sdllc-local-ack global configuration command. To deactivate local acknowledgment for SDLLC sessions, use the no form of this command.
source-bridge sdllc-local-ackSyntax Description
This command has no arguments or keywords.
To specify the X.121 address of the remote X.25 device with which you plan to communicate using QLLC conversion, use the x25 map qllc interface configuration command. To disable QLLC conversion to this X.121 address, use the no form of this command.
x25 map qllc virtual-mac-addr x121-addr [x25-map-options]
Syntax Description
virtual-mac-addr Virtual MAC address. x121-addr X.121 address of the remote X.25 device you are associating with this virtual MAC address. It can be from 1 to 15 digits long. x25-map-options (Optional) Additional functionality that can be specified for originated calls.
To associate a virtual MAC address with a PVC for communication using QLLC conversion, use the x25 pvc qllc interface configuration command. To remove the association, use the no form of this command.
x25 pvc circuit qllc x121-address [x25-map-options]
Syntax Description
circuit PVC you are associating with the virtual MAC address. This must be lower than any number assigned to switched virtual circuits. x121-address X.121 address. x25-map-options (Optional) Additional functionality that can be specified for originated calls.
Posted: Wed Jul 26 11:11:04 PDT 2000
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