nanog mailing list archives
Re: Devil's Advocate - Segment Routing, Why?
From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Sat, 20 Jun 2020 11:27:29 +0200
On Sat, Jun 20, 2020 at 11:08 AM Mark Tinka <mark.tinka () seacom mu> wrote:
MPLS with hierarchical routing just does not scale.With Internet in a VRF, I truly agree. But if you run a simple global BGP table and no VRF's, I don't see an issue. This is what we do, and our scaling concerns are exactly the same whether we run plain IP or IP/MPLS. Mark.
We run the Internet in a VRF to get watertight separation between management and the Internet. I do also have a CGN vrf but that one has very few routes in it (99% being subscriber management created, eg. one route per customer). Why would this create a scaling issue? If you collapse our three routing tables into one, you would have exactly the same number of routes. All we did was separate the routes into namespaces, to establish a firewall that prevents traffic to flow where it shouldn't. Regards, Baldur
Current thread:
- RE: why am i in this handbasket? (was Devil's Advocate - Segment Routing, Why?), (continued)
- RE: why am i in this handbasket? (was Devil's Advocate - Segment Routing, Why?) adamv0025 (Jun 22)
- Re: why am i in this handbasket? (was Devil's Advocate - Segment Routing, Why?) Mark Tinka (Jun 22)
- Re: why am i in this handbasket? (was Devil's Advocate - Segment Routing, Why?) Masataka Ohta (Jun 23)
- Re: why am i in this handbasket? (was Devil's Advocate - Segment Routing, Why?) Mark Tinka (Jun 21)
- Re: why am i in this handbasket? (was Devil's Advocate - Segment Routing, Why?) Robert Raszuk (Jun 20)
- Re: why am i in this handbasket? (was Devil's Advocate - Segment Routing, Why?) Mark Tinka (Jun 21)
- Re: why am i in this handbasket? (was 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? Robert Raszuk (Jun 19)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 20)
- Re: Devil's Advocate - Segment Routing, Why? Baldur Norddahl (Jun 20)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 20)
- Re: Devil's Advocate - Segment Routing, Why? Baldur Norddahl (Jun 20)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Baldur Norddahl (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 21)
- Re: Devil's Advocate - Segment Routing, Why? Baldur Norddahl (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? Masataka Ohta (Jun 20)
- Re: Devil's Advocate - Segment Routing, Why? Mark Tinka (Jun 20)