Ask Your Question

Revision history [back]

click to hide/show revision 1
initial version

I am able to create multiple Nics connected to same network. neutron.conf --> allow_duplicate_networks = True nova.conf -->allow _duplicate_networks =True nova/network/neutronv2/api.py : allow_duplicate_networks = True.

We are able to create VM with 2 nics attached to the same network. BUT unable to ping all the ips in the same subnet. only one interface is pingable. say VM has eth0 20.0.0.101 eth1 20.0.0.102 I am able to ping 20.0.0.101 but unable to ping 20.0.0.102 when pinging 102 and doing tcpdump -i eth1 : no pkts but tcpdump -i eth0 : icmp req and reply both are going.

Also i did ifconfig eth0 down then after some time ping is going to eth1(20.0.0.102) then quickly if you ping 20.0.0.101 it is un pingable!!!!!

I am able to create multiple Nics connected to same network. network.

neutron.conf --> allow_duplicate_networks = True True

nova.conf -->allow _duplicate_networks =True =True

nova/network/neutronv2/api.py : allow_duplicate_networks = True.

We are able to create VM with 2 nics attached to the same network. BUT BUT

unable to ping all the ips in the same subnet. subnet.

only one interface is pingable. pingable.

say VM has

eth0 20.0.0.101 20.0.0.101

eth1 20.0.0.102 20.0.0.102

I am able to ping 20.0.0.101 but unable to ping 20.0.0.102

when pinging 102 and doing tcpdump -i eth1 : no pkts but tcpdump -i eth0 : icmp req and reply both are going.

Also i did ifconfig eth0 down then after some time ping is going to eth1(20.0.0.102) then quickly if you ping 20.0.0.101 it is un pingable!!!!!

any explanation for this behaviour.