Cisco 7604-RSP720C-R Configuration Manual page 257

Chapter 7 Configuring vPCs
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m
Configuring a Hybrid vPC Peer Switch Topology
You can configure a hybrid vPC and non-vPC peer switch topology by using the spanning-tree
pseudo-information command (see the Cisco Nexus 7000 Series NX-OS Layer 2 Switching Command
Reference, Release 5.x.) to change the designated bridge ID so that it meets the STP VLAN-based
load-balancing criteria and then change the root bridge ID priority to a value that is better than the best
bridge priority. You then enable the peer switch.
BEFORE YOU BEGIN
Ensure that you have enabled the vPC feature.
Ensure that you are in the correct VDC (or use the switchto vdc command).
SUMMARY STEPS
1.
2.
3.
4.
5.
6.
7.
8.
9.
DETAILED STEPS
Command
Step 1
configure terminal
Example:
switch# configure terminal
switch(config)#
Step 2
spanning-tree pseudo-information
Example:
switch(config)# spanning-tree
pseudo-information
switch(config-pseudo)#
Step 3
vlan vlan-id designated priority priority
Example:
switch(config-pseudo)# vlan 1 designated
priority 8192
Step 4
vlan vlan-id root priority priority
Example:
switch(config-pseudo)# vlan 1 root
priority 4096
OL-23435-03
configure terminal
spanning-tree pseudo-information
vlan vlan-range designated priority value
vlan vlan-range root priority value
vpc domain domain-id
peer-switch
exit
(Optional) show spanning-tree summary
(Optional) opy running-config startup-config
Purpose
Enters global configuration mode.
Configures the spanning tree pseudo information.
Configures the designated bridge priority of the
VLAN. Valid values are multiples of 4096 from 0 to
61440.
Configures the root bridge priority of the VLAN.
Valid values are multiples of 4096 from 0 to 61440.
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
Configuring vPCs
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