Subject: [Isis-wg] 答复: solicit comments on draft-yong-isis-ext-4-distribution-tree

From: Haoweiguo <[email-masked]>
Date: Sat, 15 Feb 2014 03:16:46 +0000

In cisco ACI (Application centric infrastracture) solution, distribution tree of underlay network  is used to carry BUM traffic of eVXLAN overlay network.
IS-IS extension based distribution tree establishment mechanism is provided, it is similar to the discription in this draft. No PIM(mainly bidir-PIM) is not required, only one protocol(IS-IS) is required to control unicast and multicast
forwarding function. The underlay network fabric is greatly simplified.
thanks
weiguo
________________________________________
发件人: pim [[email-masked]] 代表 Lucy yong [[email-masked]]
发送时间: 2014年1月17日 0:08
收件人: [email-masked]
抄送: [email-masked] list; [email-masked]
主题: Re: [pim] [Isis-wg] solicit comments on draft-yong-isis-ext-4-distribution-tree

Hi Curtis,

Thank you for the observation. I modified the subject.

[snip]
First glance - for backward compatibility a capabilities indication would be nice to have.  Without this a network with one incapable node could surprisingly fail to work for part of the topology.  With it the trees can be built around such a node.
[Lucy] agreed.

Building tunnels could be possible but require that a special type of link be advertised (maybe an MPLS FA would do it).  As you stated how to build the tunnels would be out of scope.

I really have not yet looked at this closely.
[Lucy] Please take a look and provide your additional comments and suggestions.

Regards,
Lucy

Curtis
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