All things related to multicast

[Tony Rimovsky <>]

We had multicast enabled everywhere when we still had our xylan's in
place, connected via LANE and no *gmp.  10 Mbit/s Ethernet to most
offices.

One day, someone decided to install the access-grid software on their
desktop and go to the access grid lobby.  A few seconds later, the
pager went off.

*gmp makes a big difference from my scenerio, but a shared 10 can
still easily be overrun with AG traffic.

/tsr


On Wed, Oct 03, 2001 at 02:00:06PM -0500, Tim Ward wrote:
> Hey all,
> 
> I'm tired of users with shared ports preventing a 100% L3 multicast
> deployment on our campus.  More than once I've thought about just 
> turning it on everywhere, to all of our 300 or so subnets and let the 
> chips fall where they may.  My suspicion is that there won't be too
> big of an effect on the shared 10 users, unless there is some highly
> desirable multicast content.
> 
> So what do you all think the repercussions will be in terms of network
> operation if we take this step?
> 
> Network description:
> 6509 based L3 GE backbone, feeding 3500s and 2900s, with users connected
> to 3500s and 2900s and still some shared 10 hubs.  Roughly 50/50 mix of
> users on hubs and users on switches.  We ping all of the hubs and switches
> we support (which is darn near all of them in the comm closets) every 2
> minutes to check for reachability.
> 
> Tim
> -- 
> Tim Ward                                  
> 
>       V 847-467-1449
> Manager of Operations and Engineering  G172 Leverone Hall  F 847-467-5690
> Telecommunications and Network Services            Information Technology
> 2001 Sheridan Rd  Evanston IL 60208-2030          Northwestern University