Forum Discussion
Dan_148300
Nimbostratus
NimbostratusVLAN groups setup causing ARP issues
I am in the phase of migrating F5 3400 to 3900 and I am facing network disruption whenever I have attempted it. As per the below network diagram I have done the configs as below: * configured the 3900's with new IP addresses including self floating IP. The 3400's don't have floating IPs on them.
- Disabled all VS's on the 3900 to avoid IP conflicts
- 3400's are in production system handling client traffics
- setup is one-armed mode
When I bring up the links that are connected to the core switches one by one as part of adding the 3900's into the network, there was a packet storm that the two F5 units started and affected the customer services.
- Are the disabled VS's (IP addresses) still active or exchanging ARP messages?
- Is this problem related to the VLAN groups config?
Dan_148300End goal is gradually getting rid of the 3400's from the network throw a phased approach
Leonardo_SouzaCirrocumulus
You are probably getting a loop with vlan group. Why are you using vlan group?
This link explains vlan group:
Disabling a Virtual Server will not prevent the BIG-IP to ARP for the configured IP address. You will need to disable ARP in the Virtual Address List setting (Local Traffic > Virtual Servers > Virtual Address List > Disable ARP).
