From: micklegao@xxxxxxxxxxx
Date: Mon Nov 06 2000 - 04:52:33 GMT-3
hi,
i have some questions not very clear about catalyst multicast.
example:
R1-E0 ---- CATALYST 5000-----E0--R2
|
|
|
E0
|
R3
R1 's E0 CONNECT cat5000 's port 1/1
r2 's e0 connect cat5000 's port 2/1
r3 's e0 connect cat5000 's port 3/1
port 1/1-2 belongs to vlan 1
port 2/1-10 belongs to vlan 2
port 3/1-10 belongs to vlan 3
if i wanna to efficiently switch the multicast packet, i had better
use cgmp on cat5000, so i config
"set cgmp enable " on cat5000, and "ip cgmp " on very router's e0
i think this will make cat5000 switch only the multicast packet to
the port which is connected a multicast client, not use broadcast
anymore.
if the vlan3 has no multicast client , how to config , so that the
cat5000 will not permit multicast group on vlan3, but also permit
vlan1 and vlan2 has multicast group??
i have seen a command " set multicast router X/x " , but i don't
understand the command. it say the command is used to config staticly
which port is connected to a multicast router . why config this ??? i
don't think it is nessary to config this on cat5000, maybe i am wrong.
somebody must know this , please shed me a light.
thanks a lot!!
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