Re: SRv6 Capable NOS and Devices

[Jeff Tantsura <jefftant.ietf () gmail com>]

+1 Mark

There’s no modern silicon that doesn’t support MPLS (and is capable of imposing at least 3 labels). There’s 0 
additional price for vendors to enable MPLS on their devices. The rest is subject to vendors’ licensing and is 
completely artificial. 
SR-MPLS uses MPLS data-plane and requires no changes to silicon, since head-end might be required to push more labels 
(TE, BSIDs, services)one needs to pay attention -  (RFC8491/8476) allow signaling of MSD (maximum SID depth) if 
centralized controller/PCE is used for path computation.
LDP after all the years of bug fixing is still a crappy protocol, moving to SR-MPLS makes all the sense.


Cheers,
Jeff

> On Jan 15, 2022, at 11:50, Mark Tinka <mark@tinka.africa> wrote:
>
> 
>
> > On 1/15/22 19:22, Colton Conor wrote:
> >
> > True, but in general MPLS is more costly. It's available on limited
> > devices, from limited vendors. Infact, many of these vendors, like
> > Extreme, charge you if you want to enable MPLS features on a box.
>
> Well, I don't entirely agree.
>
> Pretty much all chips shipping now, either custom or merchant silicon, will support MPLS. Whether the vendor chooses 
> to implement it in code or not is a whole other matter.
>
> If you need MPLS, chances are you can afford it. If you don't, then you don't have to worry about it.
>
> For Extreme, are you referring to before or after they picked up Brocade?
>
> There is MPLS available in a number of cheap software suites. Even Mikrotik provides MPLS support. Whether it works 
> or not, I can't tell you.
>
> VyOS supports is too. Whether it works or not, I can't tell you.
>
> But I think we are long past the days of "MPLS is expensive".
>
> Mark.