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

[Owen DeLong]

> On Jun 20, 2020, at 2:27 PM, Mark Tinka <mark.ti...@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