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Hi Swaminathan Vasudevan,

please check the following docstring
of L3_NAT_dbonly_mixin._check_router_needs_rescheduling:


*    def _check_router_needs_rescheduling(self, context, router_id,
gw_info):*
*        """Checks whether router's l3 agent can handle the given network*

*        When external_network_bridge is set, each L3 agent can be
associated*
*        with at most one external network. If router's new external
gateway*
*        is on other network then the router needs to be rescheduled to the*
*        proper l3 agent.*
*        If external_network_bridge is not set then the agent*
*        can support multiple external networks and rescheduling is not
needed*

So there can still be agents which can handle only one ext net - for such
agents resheduling is needed.

Thanks,
Oleg

On Wed, Dec 17, 2014 at 8:56 PM, Vasudevan, Swaminathan (PNB Roseville) <
swaminathan.vasudevan at hp.com> wrote:
>
>  Hi Folks,
>
>
>
> *Reschedule router if new external gateway is on other network*
>
> An L3 agent may be associated with just one external network.
>
> If router's new external gateway is on other network then the router
>
> needs to be rescheduled to the proper l3 agent
>
>
>
> This patch was introduced when there was no support for L3-agent to handle
> multiple external networks.
>
>
>
> Do we think we should still retain this original behavior even if we have
> support for multiple external networks by single L3-agent.
>
>
>
> Can anyone comment on this.
>
>
>
> Thanks
>
>
>
> Swaminathan Vasudevan
>
> Systems Software Engineer (TC)
>
>
>
>
>
> HP Networking
>
> Hewlett-Packard
>
> 8000 Foothills Blvd
>
> M/S 5541
>
> Roseville, CA - 95747
>
> tel: 916.785.0937
>
> fax: 916.785.1815
>
> email: swaminathan.vasudevan at hp.com
>
>
>
>
>
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>
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