Configuration Task List - 3Com MSR 50 Series Configuration Manual

Configuration Task
List
For a bootstrap message from the bootstrap router (BSR), "packet source"
■
means the BSR.
For details about the concepts of SPT, RPT, RP and BSR, refer to
Configuration" on page
Assume that IPv6 unicast routes exist in the network, and IPv6 multicast packets
travel along the SPT from the multicast source to the receivers, as shown in
Figure 352.
Figure 352 RPF check process
Source
2000 ::101/16
IPv6 Multicast packets
IPv6 Routing Table on Router C
Destination/Prefix Interface
2000::/16 POS5/1
An IPv6 multicast packet from Source arrives on POS 5/0 of Router C, and the
■
IPv6 multicast forwarding table does not contain the corresponding forwarding
entry. Router C performs an RPF check, and finds in its IPv6 unicast routing
table that the outgoing interface to the network subnet 2000::/16 is POS 5/1.
This means that the interface on which the packet actually arrived is not the
RPF interface. The packet fails the RPF check and is discarded.
An IPv6 multicast packet from Source arrives on POS 5/1 of Router C, and the
■
IPv6 multicast forwarding table does not contain the corresponding forwarding
entry. Router C performs an RPF check, and finds in its IPv6 unicast routing
table that the outgoing interface to the subnet 2000::/16 is the one on which
the IPv6 multicast packet actually arrived. The RPF check succeeds and the
packet is forwarded.
Complete these tasks to configure IPv6 multicast routing and forwarding:
Task
"Enabling IPv6 Multicast Routing" on page 1212
"Configuring an IPv6 Multicast Routing Policy" on page 1212
"Configuring an IPv6 Multicast Forwarding Range" on page 1213
"Configuring the IPv6 Multicast Forwarding Table Size" on page
1213
1235.
Router B
POS 5/1
Router A
POS 5/1
Router C

Configuration Task List

"IPv6 PIM
Receiver
POS5/0
Receiver
POS5/0
Remarks
Required
Optional
Optional
Optional
1211