[c-nsp] Segment Routing (SR)

[Guilherme Loch Waltrick Góes]

Good read about BGP in different scenarios:
http://tools.ietf.org/html/draft-lapukhov-bgp-routing-large-dc-02
Guilherme Loch Góes


On Sat, Aug 24, 2013 at 1:16 PM, Mark Tinka <mark.tinka at seacom.mu> wrote:
> On Tuesday, August 13, 2013 11:07:07 AM Adam Vitkovsky
> wrote:
>
>> I'd like the BGP-LS to take over that role, with BGP-LS
>> as IGP you would not need to worry about scalability, so
>> you could still have a separate area (AS in case of
>> BGP-LS) per each aggregation island for administrative
>> purposes, however you could pass full SR information
>> into core AS and other aggregation island. So there
>> would be no need for yet another level of abstraction
>> i.e. RFC3017 and/or Opt.C.
>>
>> Also as we had the discussion about MPLS on the CPE
>> devices, in case of BGP-LS in the role of IGP&LDP you
>> could control specifically which prefixes and labels you
>> accept into your LSDB.
>
> I don't dispute that BGP as a potential IGP will scale (look
> at iBGP today), but will it be quick? That's my concern.
>
> Then again, the BGP-LS draft is looking at extending the
> domain for TE, but who knows how quickly this will morph.
>
> Mark.
>
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