All things related to multicast

[Matthew Davy <>]

On Tue, Mar 07, 2000 at 07:24:00AM -0800, Greg Shepherd wrote:
> This is an excellent tool. Great work! My only concern is load on the
> router. Like the weather map, the page is periodically refreshed. You may
> want to disable the refresh.

The map generation only requires one SNMP get on each router.  Unless a lot of
people are using this at once, it shouldn't put much load on the routers.  
But 
if people don't find the refresh useful, I'll probably remove it.  I played 
around with a version that refreshed very quickly.  This was useful for 
debugging
because I could see the tree change as hosts joined groups or started sending 
traffic.  I thought about providing an option to specify the refresh interval 
so
people could do this sort of thing, but decided against it.

BTW- the additional mroute info gathered when you click on a node currently 
puts
a fair amount of load on the router since I'm also using SNMP to gather that 
data.
I'm considering changing this so it runs a 'show ip mroute' on the router and
parses the output.

- Matt