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Cisco MGX 8850 Routing Switch Command Reference
Release 2.0, Part Number 78-10467-04 Rev C0, October 2001
Chapter 6
Logical Node, Port, and Signaling Commands
cnfspvcprfx
cnfspvcprfx
Configure SPVC Prefix—configure a node-level prefix for SPVCs.
For the node to support SPVCs, it must have a 13-byte SPVC prefix that applies to the entire node. No
SPVCs can exist on the node until it has an SPVC prefix. Likewise, to change this prefix, no SPVCs can
exist on the node.
Prerequisites
Setting up a node and a network requires advance planning for the PNNI node addressing scheme. For
basic guidance on the topic of address planning, refer to related material in the Cisco MGX 8850 Switch
Software Configuration Guide, Release 2.
Cisco provides a default SPVC prefix that is the same as the Cisco-supplied ATM address prefix. Each
of these default prefixes contains an International Code Designator (ICD) that is unique to Cisco
Systems. Therefore, Cisco Systems recommends that you change the ICD identifier for both the ATM
address prefix and the SPVC prefix if the node is planned for operation in a public ATM network. If the
node operates in a private ATM network, it can keep the default ATM and SPVC address prefixes.
The following list shows the order of prerequisite commands and the cnfspvcprfx command. All
commands run on the PXM45.
1.
addcontroller
2.
cnfpnni-intf
3.
cnfspvcprfx
4.
dspspvcprfx
Cards on Which This Command Runs
PXM45
Syntax
cnfspvcprfx -prfx <prefix | “default”>
Syntax Description
Related Commands
dspspvcprfx
Attributes
-prfx
The prefix is either a 13-byte value you enter or the character string “default” (to keep the
Cisco factory default).
Log: log
State: active
Privilege: SUPER_GP