juniper and cisco multicast problem?

[wilsonyong]

network diagram:

source---catalyst 7609---juniper M20---no receive.

7609 connect M20 vlan is vlan404,why vlan 404 not prune.

(*, 239.255.2.2), 00:02:19/stopped, RP 0.0.0.0, flags: D

Incoming interface: Null, RPF nbr 0.0.0.0

Outgoing interface list:

Vlan404, Forward/Dense, 00:02:19/00:00:00

Vlan122, Forward/Dense, 00:02:19/00:00:00

Vlan116, Forward/Dense, 00:02:19/00:00:00

Vlan112, Forward/Dense, 00:02:19/00:00:00

Vlan111, Forward/Dense, 00:02:19/00:00:00

Vlan110, Forward/Dense, 00:02:19/00:00:00

Vlan1, Forward/Dense, 00:02:19/00:00:00

(10.147.168.104, 239.255.2.2), 00:02:20/00:00:40, flags: T

Incoming interface: Vlan1, RPF nbr 10.147.207.195, RPF-MFD

Outgoing interface list:

Vlan110, Prune/Dense, 00:02:20/00:00:39

Vlan111, Prune/Dense, 00:02:20/00:00:39

Vlan112, Prune/Dense, 00:02:20/00:00:39

Vlan116, Prune/Dense, 00:02:20/00:00:39

Vlan122, Prune/Dense, 00:02:20/00:00:39

Vlan404, Forward/Dense, 00:02:21/00:00:00, H

[Harold Ritter]

Wilson,

It appears that a PIM prune was never received for that group from the M20.

Can you do a "show multicast route group 239.255.2.2 extensive" and "show igmp group 239.255.2.2 detail" on the M20 to see what is going on there.

Regards,