RE: CPE router acting as host on its WAN interface (RE: draft-ietf-v6ops-ipv6-cpe-router-03.txt WGLC)

["Chris Donley" <C.Donley@cablelabs.com>]

Barbara is correct - CableLabs includes some router requirements in our
DOCSIS 3.0 specifications, and we do not mention the IsRouter flag.  We
will support a number of different routed network topologies (e.g.
router embedded in a cable modem or standalone router), and have
specified different policy enforcement mechanisms (not IsRouter) to
determine which devices should receive prefix delegations and which
traffic should be filtered.

Chris

-----Original Message-----
From: owner-v6ops@ops.ietf.org [mailto:owner-v6ops@ops.ietf.org] On
Behalf Of STARK, BARBARA H (ATTLABS)
Sent: Wednesday, January 06, 2010 6:09 PM
To: Templin, Fred L; Hemant Singh (shemant); Fred Baker (fred);
v6ops@ops.ietf.org
Cc: kurtis@kurtis.pp.se; rbonica@juniper.net
Subject: RE: CPE router acting as host on its WAN interface (RE:
draft-ietf-v6ops-ipv6-cpe-router-03.txt WGLC)


> > So then, really, it's a question of the SP Rtr be
> > designed properly as per SP Rtr quality standards
> 
> Where are those standards specified? And, do they say
> that the SP router should ignore the IsRouter flag?

Telcos will create the SP Router standards in the BBF, more than likely.
I wouldn't be surprised if CableLabs did standards for the cable
companies, but I have no direct knowledge of that. My guess is that the
BBF standards won't even mention the IsRouter flag. There will be no NS
or RS messages sent to CE routers (or hosts). So there will be no
solicited NA or RA messages coming from the CE routers. The current
requirement for CE routers supplied by BBF SPs is that they will never
send RA messages out the WAN interface, solicited or unsolicited (WAN
interface is not an advertising interface). No mention has been made of
unsolicited NA messages, so far. This is probably because no-one
realistically expects to see unsolicited NA messages. If people are
thinking about really implementing unsolicited NA, then I think it may
be necessary to say that they're undesirable.

I think that Wes and Hemant are correct in assuming that this IsRouter
flag thing will be a non-issue in SP Routers.
Barbara


*****

The information transmitted is intended only for the person or entity to
which it is addressed and may contain confidential, proprietary, and/or
privileged material. Any review, retransmission, dissemination or other
use of, or taking of any action in reliance upon this information by
persons or entities other than the intended recipient is prohibited. If
you received this in error, please contact the sender and delete the
material from all computers. GA622