[Openstack-operators] floatin ip issue

Paras pradhan pradhanparas at gmail.com
Fri Oct 24 16:38:23 UTC 2014


Hello,

Assigned a floating ip to an instance. But I can't ping the instance. This
instance can reach internet with no problem. But I can't ssh or icmp to
this instance. Its not a security group issue.

On my network node that runs l3, I can see qrouter. The extenel subnet
looks like this:

allocation-pool start=192.168.122.193,end=192.168.122.222 --disable-dhcp
--gateway 192.168.122.1 192.168.122.0/24

I can ping 192.168.122.193 using: ip netns exec
qrouter-34f3b828-b7b8-4f44-b430-14d9c5bd0d0c ping 192.168.122.193

but not 192.168.122.194 (which is the floating ip)

Doing tcp dump on the interace that connects to the external world, I can
see ICMP request but not reply from the interface :


11:36:40.360255 IP 192.168.122.1 > 192.168.122.194: ICMP echo request, id
2589, seq 312, length 64

11:36:41.360222 IP 192.168.122.1 > 192.168.122.194: ICMP echo request, id
2589, seq 313, length 64


Ideas?

Thanks

Paras.
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