Hi,
I've got a server where I've got two interfaces (vlan 200 and vlan 300). If I get traffic coming into vlan 200 but sourced from a network that vlan 200 subnet doesn't know about, the server should send the traffic out of it's default gateway i.e. vlan 300, but this isn't happening. If I do a tcpdump on both interfaces I can see traffic coming in on vlan 200 but failing to even be present on the return in vlan 300 (not even present on vlan 200 - did it for sanity sake). However, if I put in an explicit route in stating that this unknown network exists out of vlan 200 then everything works fine.
My routing table is like this:
ip route 166.14.134.144/28 dev vlan200 proto kernel scope link src 166.14.134.154 159.156.137.32/28 dev vlan300 proto kernel scope link src 159.156.137.42 127.0.0.0/8 dev lo scope link default via 159.156.137.33 dev vlan300
vlan 200 and vlan 300 sit on the same bonded interface. Trunking is set on the switch.
It's almost as though the OS (kernel) is saying that you can't take input from one int and then send it out another int. Are there some parameters I need to change?
Thanks for any help.
Dan