Re: Devil's Advocate - Segment Routing, Why?

[Owen DeLong <owen () delong com>]

> On Jun 20, 2020, at 2:27 PM, Mark Tinka <mark.tinka () seacom mu> wrote:
>
>
>
> On 20/Jun/20 00:41, Anoop Ghanwani wrote:
>
> > One of the advantages cited for SRv6 over MPLS is that the packet contains a record of where it has been.
>
> I can't see how advantageous that is, or how possible it would be to implement, especially for inter-domain traffic.
>
> Mark.

Since the packet is essentially source-routed, and the labels aren’t popped off the way they are in MPLS, but preserved 
in the hop by hop headers (AIUI), the implementation isn’t particularly difficult.

Owen