RE: VRRP - Multiple Masters Question

Hi,

   Don's interpretation and Mukesh's comments over that are fine.

   I feel that the Administrators should ensure that there is no mismatch in
these critical parameters like advertisement Interval.

   If the problem is the the `Mater State`, Why can't the State can be
retained in INIT/BACKUP when there is a mismatch in Such Parameter Values?

   We have similar hello Interaval Parameter in OSPF .There also,the
adjacency won't form if any mismatch in Hello Interval.

   I think there should be some valid reasons behind the Advertisement
Interval.Can Authuors of RFC please give their comments on the same?

Thanks & Regards
Venkatesan S.









-----Original Message-----
From: [email protected] [mailto:[email protected]]On Behalf Of
Mukesh Gupta
Sent: Saturday, 3 December 2005 3:34 AM
To: Radia Perlman
Cc: Chappell, Brett L CIV B35-Branch; Hott,Robert W CIV B35-Branch;
[email protected]; Plunkett, Timothy R CIV B35-Branch; Odonoghue, Karen F
CIV B35-Branch
Subject: Re: [VRRP] VRRP - Multiple Masters Question


> a) discard (and log an error) if the value advertised
>    in the VRRP message disagrees with your configured
>    value for hello timer.... this is what is currently
>    specified
>
> b) use the interval advertised by the master, for as long
>    as it is master

I would vote for option b.

> If we switch to b), then another decision is whether that
> is configured misconfiguration or not, i.e., if an error
> should be logged.

Yes !

Is there any case where having different advertisement intervals
on different nodes will be useful?  If not, it should be considered
a misconfiguration but handled gracefully !

We are waiting for another update of the VRRP for IPv6 draft
to address IESG's comments.  We still have some time to pitch
in this change if the WG agrees to do this !

- Mukesh

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