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Multicast data fails to reach receivers, Symptom, Analysis – H3C Technologies H3C S7500E Series Switches User Manual

Page 107: Solution

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2) In the configuration, you can use the display multicast routing-table static command to

view the information of multicast static routes to verify that the multicast static route has

been correctly configured and the route entry exists in the multicast routing table.

3) Check the next hop interface type of the multicast static route. If the interface is not a

point-to-point interface, be sure to specify the next hop address to configure the outgoing

interface when you configure the multicast static route.

4) Check that the multicast static route matches the specified routing protocol. If a protocol

was specified in multicast static route configuration, enter the display ip routing-table

command to check if an identical route was added by the protocol.

5) Check that the multicast static route matches the specified routing policy. If a routing policy

was specified when the multicast static route was configured, enter the display

route-policy command to check the configured routing policy.

Multicast Data Fails to Reach Receivers

Symptom

The multicast data can reach some routers but fails to reach the last hop router.

Analysis

If a multicast forwarding boundary has been configured through the multicast boundary

command, any multicast packet will be kept from crossing the boundary.

Solution

1) Use

the

display pim routing-table command to check whether the corresponding (S, G)

entries exist on the router. If so, the router has received the multicast data; otherwise, the

router has not received the data.

2) Use

the

display multicast boundary command to view the multicast boundary information

on the interfaces. Use the multicast boundary command to change the multicast

forwarding boundary setting.

3) In the case of PIM-SM, use the display current-configuration command to check the BSR

and RP information.