Chapter 20
| Multicast Routing
Configuring PIM for IPv4
– 769 –
Configuring
aPIMStatic
Rendezvous Point
Use the Routing Protocol > PIM > SM (RP Address) page to configure a static
address as the Rendezvous Point (RP) for a particular multicast group.
Command Usage
â—† The router will act as an RP for all multicast groups in the local PIM-SM domain
if no groups are specified. A static RP can either be configured for the whole
multicast group range 224/4, or for specific group ranges.
â—† If an IP address is specified that was previously used for an RP, then the older
entry is replaced.
â—† Multiple RPs can be defined for different groups or group ranges. If a group is
matched by more than one entry, the router will use the RP associated with the
longer group prefix length. If the prefix lengths are the same, then the static RP
with the highest IP address is chosen.
â—† Static definitions for RP addresses may be used together with RP addresses
dynamically learned through the bootstrap router (BSR). If an RP address
learned by the BSR and one statically configured using this command are both
available for a group range, the RP address learned by the BSR is chosen over
the one statically configured.
â—† All routers within the same PIM-SM domain must be configured with the same
RP(s). Selecting an RP through the dynamic election process is therefore
preferable for most situations. Using the dynamic RP election process also
allows a backup RP to automatically take over if the active RP router becomes
unavailable.
Parameters
These parameters are displayed:
◆ RP Address – Static IP address of the router that will be an RP for the specified
multicast group(s).
◆ Group Address – An IP multicast group address. If a group address is not
specified, the RP is used for all multicast groups.
◆ Group Mask – Subnet mask that is used for the group address.
Web Interface
To configure a static rendezvous point:
1. Click Routing Protocol, PIM, SM.
2. Select RP Address from the Step list.
3. Specify the static RP to use for a multicast group, or a range of groups by using
a subnet mask.
4. Click Apply.
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