Robert,
Absolutely nothing. In fact, that is very close to what we had in mind in RFC
4797.
But couldn't the same argument be used with regard to SRv6 when the network
operator wants traffic to take the least-cost path from PE to PE?
Ron
Juniper Business Use Only
From: Robert Raszuk <[email protected]>
Sent: Wednesday, September 16, 2020 5:51 PM
To: Ron Bonica <[email protected]>
Cc: [email protected]
Subject: Re: SRm6 (was:SRv6)
[External Email. Be cautious of content]
Hi Ron,
> If you want an IPv6 underlay for a network offering VPN services
And what's wrong again with MPLS over UDP to accomplish the very same with
simplicity ?
MPLS - just a demux label to a VRF/CE
UDP with IPv6 header plain and simple
+ minor benefit: you get all of this with zero change to shipping hardware and
software ... Why do we need to go via decks of SRm6 slides and new wave of
protocols extensions ???
Best,
Robert.
On Wed, Sep 16, 2020 at 10:17 PM Ron Bonica via NANOG
<[email protected]<mailto:[email protected]>> wrote:
Folks,
If you want an IPv6 underlay for a network offering VPN services, it makes
sense to:
* Retain RFC 4291 IPv6 address semantics
* Decouple the TE mechanism from the service labeling mechanism
Please consider the TE mechanism described in draft-bonica-6man-comp-rtg-hdr
and the service labeling mechanism described in draft-bonica-6man-vpn-dest-opt.
These can be deployed on a mix and match basis. For example can deploy:
* Draft-bonica-6man-vpn-dest-opt only, allowing traffic to follow the
least-cost path from PE to PE.
* Deploy draft-bonica-6man-vpn-dest-opt only, using a legacy method (VXLAN,
RFC 4797) to label services.
In all cases, the semantic of the IPv6 address is unchanged. There is no need
to encode anything new in the IPv6 address.
Ron
Juniper Business Use Only
