SRv6 Capable NOS and Devices

Adam Thompson athompson at
Tue Jan 11 21:57:10 UTC 2022

My question is, why do you think you need Segment Routing at all?  Is your network so enormously large and/or complex that IS-IS (and/or MPLS-TE) isn't capable of handling it?
So far, SR looks like a solution in search of a problem, at least to me.
I'm not saying you don't have a need for it, but I am questioning whether you do, or whether you're just being sucked in by all the latest sizzle (i.e. sales & marketing materials).  (After all, that's what the sizzle is *designed* to do!)

Adam Thompson
Consultant, Infrastructure Services
100 - 135 Innovation Drive
Winnipeg, MB, R3T 6A8
(204) 977-6824 or 1-800-430-6404 (MB only)
athompson at

> -----Original Message-----
> From: NANOG < at> On
> Behalf Of Colton Conor
> Sent: Tuesday, January 11, 2022 9:17 AM
> To: NANOG <nanog at>
> Subject: SRv6 Capable NOS and Devices
> I know the SRv6 is a fairly new technology. I am wondering which
> vendors and network operating systems fully support SRv6 today? Has
> anyone deployed this new technology?
> If building a greenfield regional ISP network, would SRv6 be a requirement?
> My understanding is that because it's using IPv6 in the dataplane, not
> all devices have to have SRv6 enabled. The in-between core devices
> just have to support IPv6, but not necessarily support SRv6. This is
> much different than traditional MPLS networks today where all devices
> have to support MPLS/LDP correct?

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