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VMs cannot ping the Virtual Gateway

asked 2016-03-06 23:18:22 -0500

aditya28 gravatar image

I have set up Devstack with two virtual routers. One of the routers has an external IP 172.24.4.4 and an internal IP of 10.10.6.1 I have a private cloud which is in the 10.10.6.0/24 network. I have spawned a VM in this cloud whose IP is 10.10.6.3 I have also set up a floating IP: 172.24.4.5 However, I am unable to ping the floating IP. Also, noticed that I am unable to ping the VM 10.10.6.3 from the neutron. Output:

sudo ip netns exec qrouter-74759db2-9044-46eb-a32a-325995b88cf9 ping 10.10.6.3
PING 10.10.6.3 (10.10.6.3) 56(84) bytes of data.
From 10.10.6.1 icmp_seq=1 Destination Host Unreachable
From 10.10.6.1 icmp_seq=2 Destination Host Unreachable
From 10.10.6.1 icmp_seq=3 Destination Host Unreachable
From 10.10.6.1 icmp_seq=4 Destination Host Unreachable
^C
--- 10.10.6.3 ping statistics ---
5 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3998ms
pipe 3

I also spawned a Cirros VM and found that it is not able to ping the gatway 10.10.6.1 It worked last time around and this time, not sure what changed.

Please let me know if you need any other info. Please help me on this.

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answered 2016-03-08 01:28:07 -0500

Aun gravatar image

The best way to go ahead with identifying the exact issue is to use tcpdump on all important interfaces. Following document's "tcpdump" section should be helpful.

http://docs.openstack.org/openstack-o...

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Asked: 2016-03-06 23:18:22 -0500

Seen: 138 times

Last updated: Mar 08 '16