Hitachi GR2000 Series - Manual (Page 227)

Troubleshooting
GR2K-GA-0015 7-61
Ver. 07-02
7.7.2 No communication is possible in the PIM-SM network
7.7.2.1 PIM-SM network
When the Host #1 Cannot Receive a Packet Destined for G1 From the Transmitter S1
in the PIM-SM Network
Step 1. Ensure that the RP packages used in this entire router are RP-A1 and
thereafter.
Step 2. Confirm that SSM is defined in the configuration definition information of
the router and that G1 is an SSM address.
Step 3. Charge the show ip igmp interface command in router #3, and confirm that
the interface with host #1 is “enabled,” and free of definition for suppression
on relaying using a filter.
Step 4. Charge the show ip igmp groups command in router #3, and confirm that
host #1 is participating in the G1 group.
Step 5. Charge the show ip mroute command in router #3, and confirm that the
multicast routing cash (S, G) from transmitter S1 to G1, and the multicast
routing cash (*, G) to G1 exist.
If they don’t exist, confirm that the interface definition of the PIM-SM
between this router and #1 and #2 is “enabled”, and free of definition for
suppression when relaying using a filter.
Step 6. Charge the show ip mroute command in router #1, and confirm that the
multicast routing cash from transmitter S1 to G1 exist. If they don’t exist,
confirm that the interface definition of the PIM-SM with S1 is “enabled”,
and free of definition for suppression when relaying using a filter.
Step 7. If a routing cash downstream does not exist, confirm that router #2 and
router #3 are indicated by the
show ip pim neighbor . If the routing cash does
not exist, charge the show ip pim bsr and the show ip pim rp mapping , and
confirm that the BSR and rendezvous point (RP) are router #2.
Step 8. If the BSR and rendezvous point (RP) do not exist, or are not router #2,
charge the
show ip pim bsr and the show ip pim rp mapping commands, and
confirm that this router is the BSR and rendezvous point (RP). If this router
is not the BSR and rendezvous point, confirm that the definition for the
BSR and rendezvous point is correct by employing the configuration
definition.
Step 9. Charge the show ip mroute command in router #2, and confirm that the
multicast routing cash (S, G) from the transmitter S1 to G1, and the
multicast routing cash (*G) to G1 are in existence. If they are not in
existence, confirm that the interface definition of the PIM-SM between this
router and #1 and router #3 is “enabled”, and free of definition for
suppression when relaying using a filter.
Router #2 is a rendezvous point and BSR.
Host
#1
Transmitter
S1
Router
#1
Router
#3
Router
#2
G1