R3303-HP HSR6800 Routers IP Multicast Configuration Guide

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Configuring PIM to work with BFD
PIM uses hello messages to elect a DR for a shared-media network. The elected DR will be the only
multicast forwarder on the shared-media network.
If the DR fails, a new DR election process will start after the DR is aged out. However, it might take a long
period of time. To start a new DR election process immediately after the original DR fails, enable PIM to
work with Bidirectional Forwarding Detection (BFD) on a shared-media network to detect failures of the
links among PIM neighbors. You must enable PIM to work with BFD on all PIM-capable routers on a
shared-media network, so that the PIM neighbors can fast detect DR failures and start a new DR election
process. For more information about BFD, see High Availability Configuration Guide.
Before you configure this feature on an interface, be sure to enable PIM-DM or PIM-SM on the interface.
To enable PIM to work with BFD:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type interface-number N/A
3. Enable PIM to work
with BFD.
pim bfd enable Disabled by default.
Displaying and maintaining PIM
Task Command Remarks
Display information about the
BSR in the PIM-SM domain and
the locally configured C-RP.
display pim [ all-instance | vpn-instance
vpn-instance-name ] bsr-info [ | { begin | exclude |
include } regular-expression ]
Available in
any view.
Display information about the
unicast routes used by PIM.
display pim [ all-instance | vpn-instance
vpn-instance-name ] claimed-route [ source-address ] [ |
{ begin | exclude | include } regular-expression ]
Available in
any view.
Display the number of PIM
control messages.
display pim [ all-instance | vpn-instance
vpn-instance-name ] control-message counters
[ message-type { probe | register | register-stop } |
[ interface interface-type interface-number | message-type
{ assert | bsr | crp | graft | graft-ack | hello | join-prune
| state-refresh } ] * ] [ | { begin | exclude | include }
regular-expression ]
Available in
any view.
Display the DF information of
BIDIR-PIM.
display pim [ all-instance | vpn-instance
vpn-instance-name ] df-info [ rp-address ] [ | { begin |
exclude | include } regular-expression ]
Available in
any view.
Display information about
unacknowledged PIM-DM graft
messages.
display pim [ all-instance | vpn-instance
vpn-instance-name ] grafts [ | { begin | exclude | include }
regular-expression ]
Available in
any view.