[c-nsp] Bad day, was Re: Multicast Issue

[John Neiberger]

>>I think I have the right command on Vlan1, but I think I still need
>>something on Vlan4 that will forward the packet correctly. How about
>>this:
>>
>>ip multicast helper-map 224.0.1.55 224.0.1.55 AdvantageDB
>>
>>That doesn't change the addressing but I have a suspicion that the
>>command still needs to be there.
>
>I tried the client connection with only the multicast helper on Vlan1
>and it didn't work. I added the other multicast helper to Vlan4 and
the
>6513 rebooted.  :-)  That's not a good thing to have happen during
the
>day! Really bad idea on my part. Luckily, I have a redundant Sup in
RPR+
>mode so it wasn't down long, but it was down long enough to irritate
a
>whole bunch of people.

In hindsight, I think I created a routing loop in the 6513. As soon as
that multicast packet hit the switch, it went nuts and it immediately
locked me out. This caused some other more serious problems with other
devices that don't handle interruptions well.  :-(  On the other hand, I
just got some great news about a different project so I guess I'm not
having an entirely bad day.

John
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