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Re: [trill] Thoughts on active-active edge

Radia Perlman <radiaperlman@gmail.com> Wed, 12 December 2012 00:57 UTC

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Date: Tue, 11 Dec 2012 16:57:07 -0800
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From: Radia Perlman <radiaperlman@gmail.com>
To: Sunny Rajagopalan <sunny.rajagopalan@us.ibm.com>
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Subject: Re: [trill] Thoughts on active-active edge
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On Tue, Dec 11, 2012 at 4:23 PM, Sunny Rajagopalan <
sunny.rajagopalan@us.ibm.com> wrote:

> Hi, Radia
> I like this idea a lot better than the other proposals floating around.
> The +ve is that it can be done with today's ISIS. The -ve is that you'll
> need a minor hardware change -  today's hardware generally doesn't have the
> ability to use a different source rbridge depending on whether the packet
> is unicast or multicast.


But can R1  use a different ingress nickname depending on the port from
which it is received?   For instance, if R1 has 4 ports:
a) to pseudonode p1
b) to a different shared link, pseudonode p2
c) to a port with just a bunch of endnodes, so there is no pseudonode
d) a link towards the rest of the TRILL campus

Can R1 use nickname "p1" when ingressing from port a, nickname "p2" when
ingressing from port b, nickname "R1" when ingressing from port c?

Thanks,

Radia

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