Hello,
Is HSRP a requirement when using two Nexus 5500s with VPC? Here's what I just saw happening. I have two N 5548s running VPC with a VPC Peer link and a regular L2 trunk between them. Connected to N5k #2, i have a trunk to my lab. On N5k #1, I setup interface vlan841 with an IP, 10.10.241.1/24, and No-shut it. Interface comes up, all is happy. This is a temp network, so I didnt see a need to set it up on the 2nd switch. Attached to VLAN 841 on my lab switch, which is physically conected to my lab switch, i connected a host. I could see the MAC of the host in my LAB, but it couldn't get anywhere.
I could see the MAC of my lab-host on N5k #2, and on N5k #1, so they were learning the MAC properly. The host could PING 10.10.241.1, but nothing else. N5k #1 wasnt getting ARP resolution for the host on vlan 841 and couldn't ping it. nor could any other area on my network.
The only way i could get access to the host in my lab was to setup HSRP on both switches. I left Nexus #1 as HSRP active, and now it works. Any thoughts why I see this behavior?
Version:
5.0(3)N1(1b)
