dog

[Andrew Cherenson]

In article <8909150443.AA29598 at kaos.Stanford.EDU> paul at KAOS.STANFORD.EDU (Paul Ning) writes:
>
>Anyone out there have a version of /usr/demos/dog which sends out
>"broadcast" packets to only one (or a select few) machines ?  We were
>running dog on two Irises until we found out that the broadcast 
>packets and subsequent responses slowed down the entire network.
>Now we can only run flight *sigh*.
>
>(We thought about just disconnecting the Irises from the rest of
>the network, but we need to access their disks via NFS.)
>
>- Paul Ning

In the IRIX 3.3 release for the IRIS-4D, "dog" will send multicast packets 
by default. For backward compatibility with 3000's and 4D's running older 
releases, "dog" can use broadcasting.

Multicasting has two benefits: 1) it will not affect machines that aren't 
listening to the "dog" multicast address, and 2) "dog" packets can be 
forwarded between networks. (BTW, we're using the IP multicast/IGMP/DVMRP 
software written by Steve Deering of Stanford.)