Defining The Pim Domain Border; Modifying The Pim Router-Query Message Interval; Setting The Designated Router Priority - Motorola BSR 2000 Configuration And Management Manual

Release 1.0

Defining the PIM Domain Border

A border can be configured for the PIM domain, so that bootstrap messages do not
cross the border in either direction. Creating a border allows different Bootstrap
Routers (BSRs) to be elected on both sides of the PIM border.
Use the ip pim border command in Interface Configuration mode to configure a PIM
domain boundary on the interface of a border router peering with one or more
neighbors outside the PIM domain:
MOT(config-if)# ip pim border

Modifying the PIM Router-Query Message Interval

Router-query messages are used to elect a PIM designated router. The designated
router is responsible for sending PIM join and PIM register packets. By default,
multicast routers send PIM router-query messages every 60 seconds. Use the ip pim
query-interval command in interface configuration mode to modify the router-query
message interval:
MOT(config-if)# ip pim query-interval <0-65535>
where:

Setting the Designated Router Priority

526360-001-00 Rev. B
0-65535 is the number of seconds that multicast routers send PIM router-query
messages.
When a Designated Router (DR) is an election candidate, the router with the
highest priority is elected as the DR. The DR priority is configured on the router's
interface. If a DR priority is assigned on multiple router interfaces, then the router
with the highest IP address is used as the DR.
If a router does not advertise its priority in its hello messages, the router has the
highest priority and is elected as the DR. If multiple routers have this priority
status, then the router with the highest IP address configured on an interface is
elected to be the DR.
The default DR priority for the BSR is 1, which means that the BSR is the DR.
Use the ip pim dr-priority command in Interface Configuration mode to set the
priority for which a router is elected as the designated router (DR)
MOT(config-if)# ip pim dr-priority <1-255>
where:
Configuring IP Multicast Routing
MGBI 9-7