I have two VSS 6513 switches connected on a port channel.
Many Vlans are running GLBP on the two core switches and operational normally.
I have only one vlan (600) having the following issue: the second Core switch is reporting the following error each 30 seconds:
%IP-SW1-4-DUPADDR: Duplicate address 10.155.63.254 on Vlan600, sourced by 0007.b402.5901
this mac when tracing it, is the mac address on the first core switch associated with Vlan 600 !!
I have two groups running on the same interface vlan 600 as the following configuration :
Core-A:
interface Vlan600
description FW_MAIN_10.155.160
ip address 10.155.63.251 255.255.252.0 secondary
ip address 10.155.163.251 255.255.252.0
no ip redirects
glbp 600 ip 10.155.163.254
glbp 600 priority 150
glbp 600 preempt
glbp 600 load-balancing host-dependent
glbp 601 ip 10.155.63.254
glbp 601 priority 150
glbp 601 preempt
glbp 601 load-balancing host-dependent
arp timeout 300
end
Core-B:
interface Vlan600
description FW_MAIN_10.155.160
ip address 10.155.63.252 255.255.252.0 secondary
ip address 10.155.163.252 255.255.252.0
no ip redirects
glbp 600 ip 10.155.163.254
glbp 600 load-balancing host-dependent
glbp 601 ip 10.155.63.254
glbp 601 load-balancing host-dependent
arp timeout 300
end
Error is showing only on one group 601
I tried finding any loop but it seems to be no loop on this vlan and Core-A is the root for all vlans !!
Any idea ?!
