[c-nsp] Basic understanding of 6PE and 6VPE

[Jared Mauch]

Adam,

you are missing the fact that you may have ICMPv6 error generation be
suppressed or dropped.  Traceroute and other things are valuable tools
to diagnose what is going on.  Having an indicator of where the device
sits that generates the error within the "MPLS Core" is important.

Those that do loose-rpf on IPv6 may also see the mapped-v4 addresses
dropped.  This is observed by tracing across the ATT and Cogent MPLS
network as they have done 6PE.

If you want to repeat this problem/mistake then go ahead.  I'm trying to
help folks understand why I'm making the recommendation.

- Jared

On Jun 25, 2012, at 9:30 AM, adam vitkovsky wrote:

> But that might require lot of work like configuring all the P-core routers
> with BGP and update all the RRs with additional sessions to P-core routers
> and update BGP on all ASBRs with AFI 2
> I still fail to see the added value if the same service can be achieved with
> BGP free core
> 
> adam
> -----Original Message-----
> From: Mikael Abrahamsson [mailto:swmike at swm.pp.se] 
> Sent: Monday, June 25, 2012 2:40 PM
> To: adam vitkovsky
> Cc: 'Jared Mauch'; 'Oliver Boehmer (oboehmer)'; cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Basic understanding of 6PE and 6VPE
> 
> On Mon, 25 Jun 2012, adam vitkovsky wrote:
> 
>> If you run 6PE on L2TPv3 core than maybe, otherwise I don't see any 
>> added value in running IPv6 in the MPLS core
> 
> The added value is that you have the choice of not labelswitching IPv6 at
> all, ie running it native.
> 
> -- 
> Mikael Abrahamsson    email: swmike at swm.pp.se