f5 vlan, self ips and routing
We have a HA cluster, and multiple VLANS tagged into a cisco switch. We have a single trunk with two interfaces trunked together. On those interfaces are three vlans, each with a tag. We have setup the three vlans call them vlan_1 (default vlan on trunk port) vlan_2, vlan_3
vlan_1 and two are routable, there is a default route on the f5 0.0.0.0 to the vlan_1 gateway.
vlan_3 has no gateway, and sites on a private network with all the web servers. This network is 172.19.1.0/24.
We can get all the traffic to flow into vlan_1 without issue, vlan_1 and 3 are configured the exact same. There are two self ips for each, one static the other floating.
If I terminal into the the f5 and run ifconfig, the vlan_1 self ip has the ip address of the static not the floating, but vlan_3 self ip has the ip of the floater.
If we try and ping or tracert (should be a single hop) to anything on vlan_3 we get From 172.19.1.190 icmp_seq=2 Destination Host Unreachable , .190 is the address of the floating self ip.
If we do a tracert
traceroute to 172.19.1.3 (172.19.1.3), 30 hops max, 40 byte packets
1 172.19.1.190 (172.19.1.190) 174.730 ms !H 174.733 ms !H 174.733 ms !H
It routes back to itself.
Any tips on how to remedy this?
I hope I explained this effectively. One thing to note vlan_1 is also the management interface traffic.