Configuring The Restore Time Delay; Excluding Vlan Interfaces From Shutdown When Vpc Peer Link Fails - Cisco Nexus 5000 Series Configuration Manual

Configuring the Restore Time Delay

Configuring the Restore Time Delay
Beginning with Cisco NX-OS Release 5.0(3)N1(1), you can configure a restore timer that delays the vPC
from coming back up until after the peer adjacency forms and the VLAN interfaces are back up. This feature
avoids packet drops when the routing tables may not be converged before the vPC is once again passing traffic.
Before You Begin
Ensure that you have enabled the vPC feature.
You must configure both switches on either side of the vPC peer link with the following procedures.
SUMMARY STEPS
1. switch# configure terminal
2. switch(config)# vpc domain domain-id
3. switch(config-vpc-domain)# delay restore time
4. (Optional) switch# copy running-config startup-config
DETAILED STEPS
Command or Action
Step 1 switch# configure terminal
Step 2 switch(config)# vpc domain domain-id
Step 3 switch(config-vpc-domain)# delay restore
time
Step 4
switch# copy running-config startup-config
This example shows how to configure the delay reload time for a vPC link:
switch(config)# vpc domain 1
switch(config-vpc-domain)# delay restore 10
switch(config-vpc-domain)#

Excluding VLAN Interfaces From Shutdown When vPC Peer Link Fails

When a vPC peer-link is lost, the vPC secondary switch suspends its vPC member ports and its SVI interfaces.
All Layer 3 forwarding is disabled for all VLANs on the vPC secondary switch. You can exclude specific
SVI interfaces so that they are not suspended.
Cisco Nexus 5000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)N1(1)
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Purpose
Enters configuration mode.
Creates a vPC domain on the switch if it does not already exist, and
enters the vpc-domain configuration mode.
Configure the time delay before the vPC is restored.
The restore time is the number of seconds to delay bringng up the
restored vPC peer device. The range is from 1 to 3600. The default
is 30 seconds.
(Optional)
Copies the running configuration to the startup configuration.
Configuring Virtual Port Channels