Migrating To Bsr From Auto-Rp; Switching To An Spt For Pim Sparse Mode - Juniper JUNOSE 11.0.X MULTICAST ROUTING Configuration Manual

JUNOSe 11.0.x Multicast Routing Configuration Guide

Migrating to BSR from Auto-RP

Migrating to BSR from auto-RP requires that you upgrade all PIM routers in the domain
to support BSR. However, until all routers are BSR-capable, continue to use auto-RP.
After all routers are BSR-capable, switch from auto-RP to BSR as follows:
1.
2.
3.

Switching to an SPT for PIM Sparse Mode

PIM sparse mode initiates multicasting using a shared tree. You can configure PIM
sparse mode to switch to an SPT when a source starts sending multicast messages,
or you can prevent PIM sparse mode from switching to an SPT. Multicasting over an
SPT might be more efficient than multicasting over a shared tree. (See "PIM Sparse
Mode" on page 82.)
ip pim spt-threshold
94

Migrating to BSR from Auto-RP

Use the hold-time keyword to specify the amount of time the BSR keeps an RP
in its C-RP list if the BSR does not receive a C-RP advertisement message. The
default value is 150 seconds.
Use the priority keyword to specify a priority field value that the C-RP sends to
the BSR in C-RP advertisement messages. In the RP election process, the RP
with the lower priority value is preferred. The default value is 192.
Use the interval keyword to specify an interval, in the range 1–65535 seconds,
at which the C-RP sends advertisement messages to the BSR. The default value
is 60 seconds.
Example
host1(config)#access-list 1 permit 227.0.0.0 15.255.255.255
host1(config)#access-list 1 permit 228.0.0.0 15.255.255.255
host1(config)#ip pim rp-candidate loopback 1 group-list 1
Use the no version to stop the router from acting as an RP candidate
See ip pim rp-candidate.
Use the no ip pim send-rp-discovery scope command to stop PIM in the network
by disabling all auto-RP mapping agents. This results in flooding to an empty
map.
Reconfigure auto-RP mapping agents as candidate BSRs by using the ip pim
bsr-candidate command.
Reconfigure auto-RP candidate RPs as BSR candidate RPs by issuing the no ip
pim send-rp-announce command and then issuing the ip pim rp-candidate
command.
Use to specify when PIM sparse mode switches from a shared tree to an SPT.
Specify a nonzero integer or the keyword infinity to prevent PIM sparse mode
from switching to an SPT.