Can I use SVI interface as server's gateway IP and also make the vPC working correctly?

[Spark1231]

Sorry, I do not have enough knowledge about vPC mechanism. Can someone tip me or tell me that will it working?

Here is my situation now:

I have two Nexus 3000 series switches: N3K-A & N3K-B and I referred many blogs make them as vPC device.

Then, I create 4 SVI (4 vlan interfaces) on N3K-A and those 4 SVI interfaces will be server's network gateway address as following:

SVI vlan 2011: 192.168.211.254

SVI vlan 2012: 192.168.212.254

SVI vlan 2013: 192.168.213.254

SVI vlan 2014: 192.168.204.254

However, when I use command "show vpc brief" then I noticed an error message

Type-2 inconsistency reason : SVI type-2 configuration incompatible

But when I compare N3K-A and N3K-B running configuration file, the only difference is N3K-B does not have the 2011~2014 SVI interface.

My purpose is:

I have to use 2NICs from server and will use LACP connect to N3K-A and N3K-B by using Nexus's port-channel.

Question 1: Can I make this scenario achieve? vPC + SVI as server's gateway IP

Question 2: If question1 is yes, why I got the error message from show vpc brief? Is there any wrong from both N3K configuration?

[balaji.bandi · Accepted solution]

change the config as below :

1. I have changed VPC config to allowed limited VLAN, if you need more add them in to config

2. I have  given HSRP config for VLAN same will be other VLAN ( make sure you enable the Feature before you adding HSRP)

3. If the Server connected and support LACP ( configure that Port-channel with vpc config)

let me know how it goes.

interface port-channel99
description vPC Peer-Link
switchport mode trunk
spanning-tree port type network
switchport trunk allowed vlan 1,2011-2012
vpc peer-link

nexus 3K1

vlan 2011
name 2011
!
interface Vlan2011
description 2011
no shutdown
mtu 9216
ip address 192.168.211.252/24
hsrp bfd
hsrp version 2
hsrp 2011
preempt
priority 200
ip 192.168.211.254
wr

nexus 3K2

configure terminal
!
vlan 2011
name 2011
!
interface Vlan2011
description 2011
no shutdown
mtu 9216
ip address 192.168.211.253/24
hsrp bfd
hsrp version 2
hsrp 2011
priority 190
ip 192.168.211.254
wr

[Spark1231]

Hi BB, thank you for your suggestion and it really give me more tips on how to search related information from google.

Your example configuration is work and we got vPC & HSRP benefit on our environment.

Could you please also explain what "preempt" definition or why this parameter should be configured on HSRP primary device?

[balaji.bandi]

Glad all working as expected.

If SWITC 1 has the higher priority and if it is configured with preempt then any given time SWITCH 1 is up then it will be active. There is no need for preempt on SWITCH 2.

This is a normal HSRP behavior.