Инструкции По Установке для 3com S7906E

 

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3)  Check that the RPF neighbor is an IPv6 PIM neighbor. Use the display pim ipv6 neighbor 

command to view the PIM neighbor information.  

4)  Check that IPv6 PIM and MLD are enabled on the interfaces directly connecting to the IPv6 

multicast source and to the receiver. 

5)  Check that the same IPv6 PIM mode is enabled on related interfaces.  Use the display pim ipv6 

interface verbose command to check whether the same PIM mode is enabled on the RPF 

interface and the corresponding interface of the RPF neighbor router.  

6)  Check that the same IPv6 PIM mode is enabled on all the routers in the entire network. Use the 

display current-configuration command to check the IPv6 PIM mode information on each 

interface. Make sure that the same IPv6 PIM mode is enabled on all the routers: IPv6 PIM-SM on 

all routers, or IPv6 PIM-DM on all routers.  

An intermediate router can receive IPv6 multicast data successfully, but the data cannot reach the last 

hop router. An interface on the intermediate router receives data but no corresponding (S, G) entry is 

created in the IPv6 PIM routing table. 

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If an IPv6 multicast forwarding boundary has been configured through the multicast ipv6 

boundary command, any IPv6 multicast packet will be kept from crossing the boundary, and 

therefore no routing entry can be created in the IPv6 PIM routing table. 

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In addition, the source-policy command is used to filter received IPv6 multicast packets. If the 

IPv6 multicast data fails to pass the ACL rule defined in this command, IPv6 PIM cannot create the 

route entry, either. 

1) Check the IPv6 multicast forwarding boundary configuration. Use the display 

current-configuration  command to check the IPv6 multicast forwarding boundary settings. Use 

the  multicast ipv6 boundary command to change the IPv6 multicast forwarding boundary 

settings. 

2)  Check the IPv6 multicast filter configuration. Use the display current-configuration command to 

check the IPv6 multicast filter configuration. Change the IPv6 ACL rule defined in the 

source-policy  command so that the source/group address of the IPv6 multicast data can pass 

ACL filtering. 

An RPT cannot be established correctly, or the RPs cannot join the SPT to the IPv6 multicast source.  

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As the core of an IPv6 PIM-SM domain, the RPs serves specific IPv6 multicast groups. Multiple 

RPs can coexist in a network. Make sure that the RP information on all routers is exactly the same, 

and a specific group is mapped to the same RP. Otherwise, IPv6 multicast will fail.