Future of the IPv6 CPE survey on RIPE Labs - Your Input Needed

Frank Bulk frnkblk at iname.com
Thu Jan 27 09:58:07 CST 2011


I don't know what I was thinking last night, but I believe I had SLAAC +
DHCPv6-PD working myself, but wasn't satisfied. =)  I'm not comfortable
using SLAAC for WAN addresses in a service provider environment.

I do DHCPv4 relay today.  DHCPv6 relay worked perfectly on an PVI, but with
a SVI with it was very much hit and miss, such that now CSCtl77398 has been
created.  Enabling "ipv6 multicast-routing" has dramatically improved the
success of DHCPv6 relay.  So while the bug is not fixed, it's good enough
that I can continue with preparing for a trial.

Frank

-----Original Message-----
From: Jack Bates [mailto:jbates at brightok.net] 
Sent: Thursday, January 27, 2011 8:18 AM
To: frnkblk at iname.com
Cc: Owen DeLong; nanog at nanog.org
Subject: Re: Future of the IPv6 CPE survey on RIPE Labs - Your Input Needed

On 1/27/2011 12:57 AM, Frank Bulk wrote:
> Have you looked at D-Link's DIR-825?  It has most of the things you're
> looking for.  The DIR-655 is a more affordable option.
>
Haven't had the chance to look at that one. Will check it out.

> In regards to (2), is it even possible to do DHCPv6-PD on with a SLAAC
WAN?
>
It had better be, as IOS 12.2 SRE only supports SLAAC + DHCPv6-PD. Most 
of the Cisco documentation I've seen, says that is their beautiful 
layout. No more proxyarp/nd. Instead, assign a /64 to each subinterface, 
perform SLAAC, then hand out prefixes via DHCPv6-PD if someone needs a 
prefix.

> In regards to (3), I have that working on SRE, but with an external DHCP
> server.
>
Yeah, I could see the forwarding code supporting it. Cisco documentation 
stated proxynd with rbe/unnumbered vlans isn't what they support. How 
did your tests go mirroring the v4 method using dhcp forwarding with the 
v6 method?


Jack





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