[c-nsp] Devil's Advocate - Segment Routing, Why?

[twall]

can you please remove me from this list.

On 18/06/2020 09:42, Mark Tinka wrote:
>
> On 18/Jun/20 09:30, Saku Ytti wrote:
>
>> Yes work left to be done. Ultimately the root problem is, no one cares
>> about IPv6. But perhaps work with vendors in parallel to LDPv6 to get
>> them to fix OSPFv3 and/or ISIS.
> Yes, this.
>
> Vendor feedback for those not supporting LDPv6 is that there is no
> demand for it. And like I said in the previous thread, LDPv6 demand is
> not about LDPv6, it's about IPv6.
>
> If the majority of the high-paying vendors' favorite customers that pay
> for CGN's continue to do so, what incentive do they have to ask for
> IPv6. The T-Mobile US's of the world are few and far between, sadly.
>
> I suppose I would not be unwilling to push the vendors to support
> SR-OSPFv3 and SR-ISISv6 as I am also pushing them to support LDPv6 where
> it is lacking, because at some point in the future, I do want to deploy
> SR-MPLS in the same way I envisioned doing so back in 2014. I just need
> to take it on a few dates first before I bring it home to meet the folks
> :-).
>
>
>
>> FWIW I am definitely saying that, and it should be IGP+BGP. I do
>> accept and realise a lot of platforms only did and do Martini not
>> Kompella, so reality isn't quite there.
> That was me in 2013/2014. Dump LDP, dump RSVP, get SR deployed, forward
> IPv4 natively in MPLSv4, and IPv6 natively in MPLSv6. But life happened.
>
> Nonetheless, I will go SR-MPLS in many years to come, after I'm feeling
> comfortable about it. That's a promise. But until then, I'd like
> trusted, stable IPv4-IPv6 MPLS forwarding parity.
>
> I have never cared much for VPLS because I thought it was a very messy
> piece of tech. from Day 1. And while EVPN makes more sense, for our
> market, more than 98% of the traffic we sell is IP-based, so we have no
> demand for mp2mp Ethernet VPN's. But for those that adore VPLS (or
> EVPN), let them have the choice of LDP or BGP, which both Cisco and
> Juniper, after years of muscle-flexing, both ended up agreeing on
> anyway, despite all the fuss.
>
> So the LDPv6 vs. SR-MPLS vs. SRv6 vs. SRv6+ posturing is a rehash of
> those LDP vs. BGP days, which just wastes everyone's time.
>
> Mark.
>
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