Elect An Rp Using The Bsr Mechanism - Dell Force10 C150 Configuration Manual

IP Version Task
IPv6 Override bootstrap router RP election results
with your static RP configuration.
IPv6 Display the assigned RP for a group.
IPv6 Display the assigned RP for a group range
(group-to-RP mapping).

Elect an RP using the BSR Mechanism

Every PIM router within a domain must map a particular multicast group address to the same RP. The
group-to-RP mapping may be statically or dynamically configured. RFC 5059 specifies a dynamic,
self-configuring method called the Bootstrap Router (BSR) mechanism, by which an RP is elected from a
pool of RP candidates (C-RPs).
Some routers within the domain are configured to be C-RPs. Other routers are configured to be Bootstrap
Router candidates (C-BSRs); one router is elected the BSR for the domain and is responsible for
forwarding Bootstrap messages (BSM) containing the results of the RP election to the other routers in the
domain.
The RP election process is as follows:
1. C-BSRs flood their candidacy throughout the domain in a BSM. Each message contains a BSR priority
value, and the C-BSR with the highest priority value becomes the BSR.
2. Each C-RP unicasts periodic Candidate-RP-Advertisements to the BSR. Each message contains an RP
priority value and the group ranges for which it is a C-RP.
3. The BSR determines the most efficient and stable group-to-RP mappings, which is called the RP-Set.
4. The BSR floods the RP-Set throughout the domain periodically in case new C-RPs are announced, or
an RP failure occurs.
IP Version Task
IPv4 Make a PIM router a BSR candidate.
Make a PIM router a RP candidate.
Display Bootstrap Router information.
IPv6 Make a PIM router a BSR candidate.
Make a PIM router a RP candidate.
Display Bootstrap Router information.
762 | PIM Sparse-Mode
Command Syntax
ipv6 pim rp-address
show ipv6 pim rp
show ipv6 pim rp mapping
Command Syntax
ip pim bsr-candidate
ip pim rp-candidate
show ip pim bsr-router
ipv6 pim bsr-candidate
ipv6 pim rp-candidate
show ipv6 pim bsr-router
Command Mode
CONFIGURATION
EXEC Privilege
EXEC Privilege
Command Mode
CONFIGURATION
CONFIGURATION
EXEC Privilege
CONFIGURATION
CONFIGURATION
EXEC Privilege