nanog mailing list archives
Re: Devil's Advocate - Segment Routing, Why?
From: Mark Tinka <mark.tinka () seacom mu>
Date: Sun, 21 Jun 2020 22:57:56 +0200
On 21/Jun/20 22:21, Robert Raszuk wrote:
Well this is true for one company :) Name starts with j .... Other company name starting with c - at least some time back by default allocated labels for all routes in the RIB either connected or static or sourced from IGP. Sure you could always limit that with a knob if desired.
Juniper allocates labels to the Loopback only. Cisco allocates labels to all IGP and interface routes. Neither allocate labels to BGP routes for the global table.
The issue with allocating labels only for BGP next hops is that your IP/MPLS LFA breaks (or more directly is not possible) as you do not have a label to PQ node upon failure. Hint: PQ node is not even running BGP :).
Wouldn't T-LDP fix this, since LDP LFA is a targeted session? Need to test.
Sure selective folks still count of "IGP Convergence" to restore connectivity. But I hope those will move to much faster connectivity restoration techniques soon.
We are happy :-). Mark.
Current thread:
- RE: Devil's Advocate - Segment Routing, Why?, (continued)
- RE: Devil's Advocate - Segment Routing, Why? adamv0025 (Jun 22)
- Re: Devil's Advocate - Segment Routing, Why? Masataka Ohta (Jun 20)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 20)
- Re: Devil's Advocate - Segment Routing, Why? Masataka Ohta (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Robert Raszuk (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Robert Raszuk (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Robert Raszuk (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Robert Raszuk (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 21)
- RE: Devil's Advocate - Segment Routing, Why? adamv0025 (Jun 22)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 19)
- RE: Devil's Advocate - Segment Routing, Why? adamv0025 (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Masataka Ohta (Jun 19)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 20)
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- Re: [c-nsp] Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 19)
- Re: [c-nsp] Devil's Advocate - Segment Routing, Why? Saku Ytti (Jun 19)