Forum Discussion
MistOSPF Route Advertisement for Floating Self IP in Active/Standby HA
Hi all
In an Active/Standby HA deployment using OSPF network statements to advertise connected VLAN prefixes, both BIG-IPs advertise the same connected subnet. When the floating self IP is used as the server default gateway and also selected by SNAT Automap, how is traffic redirected to the new Active after failover if the old Active continues advertising the connected prefix with a lower OSPF cost? Is there any recommended design or best practice from F5?
1 Reply
- Nikoolayy1
MVP
What is the exact issue you are having?
I have similar setup for BGP F5 advertising the floating ip is much better than devices where the standby is "death" and only when the active goes down then OSPF or BGP sessions need to be established.
The new active F5 will send gARP for the floating IP. Some network environments dislike or drop gARP and then Configuring MAC masquerade (11.x - 21.x) is used as then the F5 devices use vMAC that will failover to the new active F5.
You need to properly test and know your network environment.
