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Hi all,

Thanks, Akihiro and Simon! I didn't know we had such option.

>> Regarding 1, the configuration option "dhcp_agents_per_network" is
introduced. This options specifies the number of DHCP agents scheduled to
host a network.
>> If you set this option to the number of dhcp agents, you can do this.

>> It already exists in Havana by setting the dhcp_agents_per_network
parameter in neutron.conf .
>> Check this commit for details:
https://github.com/openstack/neutron/commit/c95e58b70796eae6bbc8bac283f81df9aa1d1894


On Fri, Jul 19, 2013 at 4:35 PM, Simon Pasquier <simon.pasquier at bull.net>wrote:

>  Le 19/07/2013 15:07, Roman Podolyaka a écrit :
>
> Hi Jacob, all
>
>  1. When a new Neutron network is created, it is automatically scheduled
> to one of DHCP-agents running in a cluster (actually, it's done lazily,
> when the first port on this network is created, but that's an
> implementation detail). Though, you have to manually schedule it to
> additional DHCP-agents to provide HA. I haven't seen any BPs adding such an
> option, but I agree, that it would be useful to have one.
>
>
> It already exists in Havana by setting the dhcp_agents_per_network
> parameter in neutron.conf .
> Check this commit for details:
>
> https://github.com/openstack/neutron/commit/c95e58b70796eae6bbc8bac283f81df9aa1d1894
>
>
>  2. Not sure we have one :( The solution from TelekomCloud guys seems to
> be the only way to go to provide HA for L3 agents in Active/Active mode
> currently.
>
>  3. Every network or compute node in a cluster runs an L2-agent, which
> allows one to create L2 tenant networks and plug VMs/routers/DHCP-servers
> into network ports (the underlying implementation depends on the core
> plugin you use, e.g. OVS can use VLANs or GRE tunnels to provide tenant
> isolation). So L2 networking is ready to use when you've started an
> L2-agent and provided it with a correct configuration file.
>
>  Thanks,
> Roman
>
>
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>
>
> --
> Simon Pasquier
> Software Engineer
> Bull, Architect of an Open World
> Phone: + 33 4 76 29 71 49http://www.bull.com
>
>
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