Comment 7 for bug 920493

I just tested this in our lab and it works fine. My guess is that your router isn't set up to allow the 10.x range traffic. Perhaps you have port security on? It has to allow traffic across the ports that br100 is bridging into.

Vish

On Jan 27, 2012, at 10:59 AM, David Kranz wrote:

> Actually that did not seem to have any effect. How many people are using
> multi_host? I would change the title of this ticket but don't know how.
>
> --
> You received this bug notification because you are subscribed to
> OpenStack Compute (nova).
> https://bugs.launchpad.net/bugs/920493
>
> Title:
> Sometimes vms on same fixed network cannot ping others if floating
> address present
>
> Status in OpenStack Compute (Nova):
> New
>
> Bug description:
> It is my understanding, and observation, that vms allocated from the
> same --fixed_range network can ping the fixed addresses of other such
> vms. Also, vms can be pinged by fixed address from the compute node on
> which they are running. A user reported that when a floating ip was
> assigned to a vm, she could not access that vm by fixed address, but
> could by the floating address. I was able to reproduce this problem
> but not in a consistent way. It seemed more likely to happen when the
> floating ip address was assigned before the vm finished booting but I
> could not create a reliable pattern to show this. When the vm's fixed
> address was not accessible to other vms, it was still OK from the
> compute node hosting the vm. This system is based on diablo-stable and
> this nova.conf:
>
> --use_deprecated_auth
> --dhcpbridge_flagfile=/etc/nova/nova.conf
> --dhcpbridge=/usr/bin/nova-dhcpbridge
> --sql_connection=mysql://nova:notnova@172.18.0.131/nova
> --s3_host=172.18.0.131
> --rabbit_host=172.18.0.131
> --glance_api_servers=172.18.0.131:9292
> --logdir=/var/log/nova
> --state_path=/var/lib/nova
> --lock_path=/var/lock/nova
> --verbose
> --ec2_url=http://172.18.0.131:8773/services/Cloud
> --dmz_cidr=172.18.0.131/32
> --fixed_range=10.0.0.0/24
> --network_size=256
> --image_service=nova.image.glance.GlanceImageService
> --bridge_interface=eth1
> --flat_network_bridge=br100
> --flat_interface=eth1
> --network_manager=nova.network.manager.FlatDHCPManager
> --force_dhcp_release
> --public_interface=eth0
> --multi_host=1
> --osapi_host=172.18.0.131
>
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