Edge-Core ECS4660-28F Management Manual page 1952

| Multicast Routing Commands
C 52
HAPTER
PIM Multicast Routing
D S
EFAULT ETTING
Disabled
C M
OMMAND ODE
Interface Configuration (VLAN)
C U
OMMAND SAGE
To fully enable PIM, you need to enable multicast routing globally for
◆
the router with the
globally for the router with the
PIM-DM or PIM-SM for each interface that will participate in multicast
routing with this command.
If you enable PIM on an interface, you should also enable MLD (see
◆
"MLD (Layer 3)" on page
determines how the switch populates the multicast routing table, and
how it forwards packets received from directly connected LAN
interfaces. Dense mode interfaces are always added to the multicast
routing table. Sparse mode interfaces are added only when periodic
join messages are received from downstream routers, or a group
member is directly connected to the interface.
Dense-mode interfaces are subject to multicast flooding by default, and
◆
are only removed from the multicast routing table when the router
determines that there are no group members or downstream routers,
or when a prune message is received from a downstream router.
◆ Sparse-mode interfaces forward multicast traffic only if a join message
is received from a downstream router or if group members are directly
connected to the interface. When routers want to receive a multicast
flow, they periodically send join messages to the Rendezvous Point
(RP), and are subsequently added to the shared path for the specified
flow back up to the RP. If routers want to join the source path up
through the Shortest Path Source Tree (SPT), they periodically send
join messages toward the source. They also send prune messages
toward the RP to prune the shared path if they have already connected
to the source through the SPT, or if there are no longer any group
members connected to the interface.
E
XAMPLE
Console(config)#interface vlan 1
Console(config-if)#ipv6 pim dense-mode
Console(config-if)#end
Console#show ipv6 pim interface
PIM is enabled.
VLAN 1 is up.
PIM Mode
IPv6 Address
Hello Interval
Hello HoldTime
Triggered Hello Delay
Join/Prune Holdtime
Lan Prune Delay
Propagation Delay
Override Interval
– 1952 –
ipv6 multicast-routing command, enable PIM
router pim6
1525) on that interface. PIM mode selection
: Dense Mode
: None
: 30 sec
: 105 sec
: 5 sec
: 210 sec
: Disabled
: 500 ms
: 2500 ms
command, and also enable