1 pim-sm network, 1 pim-sm network -61 – Hitachi GR2000 Series User 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

Transmitter

Router