[Openstack] ask - Multiple External Network and Multiple NIC

sylecn sylecn at gmail.com
Fri Jul 4 05:42:22 UTC 2014


Hi,

vm1----eth0----localnet ----- externalnet------Internet
> vm1----eth1---localnet 1------ externalnet1 ----- Internet
>
>
I have confidence this works. The logical network topology will look like
this:


         externalnet            externalnet1
             |                        |
             |                        |
             |                        |
        virtual router          virtual router1
             |                        |
             |                        |
             |                        |
         tenant net              tenant net1
              |                       |
             port                    port
                \                   /
                 \                 /
                  -------  --------
                         \/
                         VM


You need to create two routers to use two external networks. Just declare
the external networks and do router-gateway-set.
Add each tenant network to their corresponding router.


>> vm1----eth0----localnet ----- externalnet------Internet
>> vm1----eth1---localnet ------ externalnet1 ----- Internet

This, however, does not work out of the box. I remember you can't create
two NIC from the same tenant network.

--
Thanks,
Yuanle
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