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how to ping the instance in other network segment

asked 2015-06-03 01:24:29 -0500

shawn gravatar image

updated 2015-06-03 02:46:21 -0500

SGPJ gravatar image

now i have finished deploying the openstack in 20.20.20.* . and I set the instance network segment in 10.10.10.*

i want to know how to ping the 10.10.10.* from the same intranet(20.20.20.) and how to ping the 10.10.10. from other intranet(30.30.30.*)

for ex :

1. my instance IP is

2. pc1: /  pc2:

3. in network node ,i use the command 
netrun subnet-create ext-net --name ext-subnet --allocation-pool start=,end= disable-dhcp --gateway

4. 20.20.20.* and 30.30.30.* can ping each other without limit.

so how to ping the from pc1 and pc2


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answered 2015-06-04 08:25:32 -0500


i believe you created a router and attached interfaces of 20.20.20.* and 30.30.30.* network. if these two are pinging then each other then your router is fine.

check from host machine i.e. from type ip netns show from a network node

this will return few values like qdhcp-* for your network and qrouter- for your router.

you can ping like ip netns exec qrouter-********** ping 20.20.20.*

if this all works fine then create br-ex and attach public network gateway to it. you can check the details in network topology from dashboard. after creating br-ex you can directly ping to you neutron instances without using namespace.

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Asked: 2015-06-03 01:24:29 -0500

Seen: 482 times

Last updated: Jun 04 '15