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From "Marcus Sorensen (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-2209) added nics are not reachable from other VMs on the same network
Date Fri, 26 Apr 2013 14:12:15 GMT


Marcus Sorensen commented on CLOUDSTACK-2209:

What do you see when you look for the forward delay setting on your bridges? e.g.

brctl showstp cloudbr0

With RHEL/CentOS it's common for the foward delays to be high, like 14.99. This means that
when a new NIC is plugged in, it doesn't work for 15 seconds, which may mean it's not getting
its DHCP address in time.

Bridges created by cloudstack should be getting a proper forward delay, so check that.

Is there a chance these two VMs ended up on different physical hosts and the issue may lie
there, or what does your environment look like? Just looking for additional clues.
> added nics are not reachable from other VMs on the same network
> ---------------------------------------------------------------
>                 Key: CLOUDSTACK-2209
>                 URL:
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Network Controller
>    Affects Versions: 4.2.0
>         Environment: KVM 
> Build:CloudStack-non-OSS-MASTER-262-rhel6.3
>            Reporter: shweta agarwal
>            Priority: Blocker
>             Fix For: 4.2.0
> Steps to reproduce
> 1 create a VM say vm1 with 1 network
> 2. add a new network say n2 to this vm
> 3. create a new vm say vm2 in network n2
> 5. ping  ip for n2 network  from vm2 for vm1
> Bug:
> n2 network IP is not pingable from vm2 and even vice versa
> Expectation:
> IP should be pingable
> Additional information
> ifconfig shows eth are assigned proper ips.

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