All things related to multicast

[Havard Eidnes <>]

>       We just experienced a major amount (multi-megabit) of traffic 
> coming from 136.244.96.104 going to the SAP/SDR multicast address and 
> port (224.2.127.254/9875).  All CPUs on our routers broke into a sweat as 
> they tried to process this traffic.

As did ours in UNINETT.  Since the routers themselves have little
to no use for the data they receive when they are configured with
"ip sap listen", I just had a round and turned it off on the
10-20 or so remaining routers in our network which had it turned
on, so that they won't be similarly affected the next time around
someone makes a similar mistake.

Best regards,

- Håvard