PLANET XGS3-24042 - Manual (Page 468)

49-12
Switch(Config-if-Vlan1)#ipv6 address 2000:34:1:1::4/64
Switch(Config-if-Vlan1)#ipv6 pim sparse-mode
Switch(Config-if-Vlan1)#exit
Switch(config)#interface vlan 2
Switch(Config-if-Vlan2)#ipv6 address 2000:24:1:1::4/64
Switch(Config-if-Vlan2)#ipv6 pim sparse-mode
Switch(Config-if-Vlan2)#exit
Switch(config)#interface vlan 3
Switch(Config-if-Vlan3)#ipv6 address 2000:40:1:1::1/64
Switch(Config-if-Vlan3)#ipv6 pim sparse-mode
49.2.4 PIM-SM6 Troubleshooting
When configuring and using PIM-SM protocol, PIM-SM protocol may fail to work normally due to physical
connections, incorrect configuration and so on. So, users shall note the following points:
 Assure the physical connection is correct.
 Assure the Protocol of Interface and Link is UP (use show interface command);
 Unicast route shall be used to carry out RPF examination for multicast protocol. So the correctness of
unicast route shall be guaranteed above all.
 PIM-SM Protocol requires supports of RP and BSR, therefore you should use show ipv6 pim bsr-router
first to see if there is BSR information. If not, you need to check if there is unicast routing leading to BSR.
 Use show ipv6 pim rp-hash command to check if RP information is correct; if there is no RP information,
you still need to check unicast routing;
If all attempts fail to solve the problems on PIM-SM, then use debug commands such as debug ipv6 pim/
debug ipv6 pim bsr, copy DEBUG information in 3 minutes and send to Technology Service Center.
49.3 ANYCAST RP v6 Configuration
49.3.1 Introduction to ANYCAST RP v6
Anycast RP v6 is a technology based on PIM protocol, which provides redundancy in order to recover as soon
as possible once an RP becomes unusable.
The kernel concept of Anycast RP v6 is that the RP addresses configured all over the whole network exist on
multiple multicast servers (the most common situation is that every device providing ANYCAST RP uses
LOOPBACK interface, and using the longest mask to configures RP addresses on this interface), while the
unicast routing algorithm will make sure that PIM routers can always find the nearest RP, thus , providing a
shorter and faster way to find RP in a larger network., Once an RP being used becomes unusable, the unicast
routing algorithm will ensure that the PIM router can find a new RP path fast enough to recover the multicast
server in time. Multiple RP will cause a new problem that is if the multicast source and the receivers are
registered to different RP, some receivers will not be able to receive data of multicast source (obviously, the
register messages only prefer the nearest RP). So, in order to keep the communication between all RP,