Planet XGS3-24042 User Manual download pdf (Page 461)

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49-5

Switch(config)#interface vlan 1

Switch(Config-if-Vlan1)#ipv6 address 2000:10:1:1::1/64

Switch(Config-if-Vlan1)#ipv6 pim dense-mode

Switch(Config-if-Vlan1)#exit

Switch(config)#interface vlan2

Switch(Config-if-Vlan2)#ipv6 address 2000:12:1:1:: 1/64

Switch(Config-if-Vlan2)#ipv6 pim dense-mode

(2) Configure SwitchB:

Switch(config)#ip pim multicast-routing

Switch(config)#interface vlan 1

Switch(Config-if-Vlan1)#ipv6 address 2000:12:1:1::2/64

Switch(Config-if-Vlan1)#ipv6 pim dense-mode

Switch(Config-if-Vlan1)#exit

Switch(config)#interface vlan 2

Switch(Config-if-Vlan2)#ipv6 address 2000:20:1:1::1/64

Switch(Config-if-Vlan2)#ipv6 pim dense-mode

49.1.4 PIM-DM6 Troubleshooting

When configuring and using PIM-DM protocol, PIM-DM 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);

 Assure PIM Protocol is turned on in Global Mode (use ipv6 pim multicast-routing command )

 Start PIM-DM Protocol on the interface (use ipv6 pim dense-mode 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. If all attempts fail to solve the problems on PIM-DM, then use debug

commands such as debug ipv6 pim, copy DEBUG information in 3 minutes and send to Technology Service

Center.

49.2 PIM-SM6

49.2.1 Introduction to PIM-SM6

PIM-SM6（Protocol Independent Multicast, Sparse Mode）is the IPv6 version of Protocol Independent

Multicast Sparse Mode. It is a multicast routing protocol in sparse mode and mainly used in large network with

group members distributed relatively sparse and wide. It is no difference from the IPv4 version PIM-SM

except the addresses it uses are IPv6 addresses. Thus we don’t differentiate between PIM-SM and PIM-SM6

in this chapter. All PIM-SM in the text without specific explanation is IPv6 version PIM-SM. Unlike the

Flooding-Prune of Dense Mode, PIM-SM Protocol assumes no host needs receiving multicast data packets.

PIM-SM router forwards multicast data packets to a host only on definite request.

By setting RP (Rendezvous Point) and BSR (Bootstrap Router), PIM-SM announce multicast packet to all

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