[j-nsp] Segment Routing ( SPRING )

[Saku Ytti]

On 5 March 2016 at 15:22, Adam Vitkovsky <Adam.Vitkovsky at gamma.co.uk> wrote:
>> (b) Are there any noticeable behavioral differences between SPRING and
>> LDP implementations?
>>
> Yes instead of label swap routers do label pop

This is not really a behavioural change. Traditionally this may occur
also, due to say FRR, or really like VPN. On ingress you'll see top
label is for you, so you pop it, then you'll do another lookup on what
remains, might be VPN label pointing to customer might be another
label pointing to another P..

Forwarding plane needs no update/change if not for lack of signalling
capabilities, P router without SR support could transit SR packets.

-- 
  ++ytti