Alcatel-Lucent 6850 Switch User Manual


 
Configuring PIM Configuring IPv6 PIM
OmniSwitch 6800/6850/9000 Advanced Routing Configuration Guide December 2007 page 7-39
-> show ipv6 pim candidate-rp
RP Address Group Address Priority Interval Status
------------------+---------------+---------+---------+--------
3000::11 FF00::/8 192 60 enabled
The group address is listed as FF00::/8. The C-RP is listed as 3000::11. The status is enabled.
For more information about these displays, see the “PIM Commands” chapter in the OmniSwitch CLI
Reference Guide.
Configuring Candidate Bootstrap Routers (C-BSRs) for IPv6 PIM
You can use the ipv6 pim cbsr command to configure the local router as the candidate-BSR for the IPv6
PIM domain. For example:
-> ipv6 pim cbsr 2000::1 priority 100 mask-length 4
This command specifies the router to use its local address 2000::1 for advertising it as the candidate-BSR
for that domain, the priority value of the local router as a C-BSR to be 100, and the mask-length that is
advertised in the bootstrap messages as 4. The value of the priority is considered for the selection of C-
BSR for the IPv6 PIM domain. The higher the value, the higher the priority.
Use the no form of this command to remove the local routers' candidacy as the BSR. For example:
-> no ipv6 pim cbsr 2000::1
Verifying the C-BSR Configuration
Note. Check C-BSR and information about priority and mask-length using the show ipv6 pim cbsr
command, as follows:
-> show ipv6 pim cbsr
CBSR Address = 3000::7,
Status = enabled,
CBSR Priority = 0,
Hash Mask Length = 126,
Elected BSR = False,
Timer = 00h:00m:00s
For more information about these displays, see the “PIM Commands” chapter in the OmniSwitch CLI
Reference Guide.
Bootstrap Routers (BSRs)
As described in the “PIM Overview” section, the role of a Bootstrap Router (BSR) is to keep routers in the
network “up to date” on reachable Candidate Rendezvous Points (C-RPs). BSRs are elected from a set of
Candidate Bootstrap Routers (C-BSRs). Refer to page 7-9 for more information on C-BSRs.
Reminder. For correct operation, all IPv6 PIM-SM routers within an IPv6 PIM-SM domain must be able
to map a particular multicast group address to the same Rendezvous Point (RP). PIM-SM provides two
methods for group-to-RP mapping. One method is the Bootstrap Router mechanism, which also involves
C-RP advertisements, as described in this section; the other method is static RP configuration. Note that, if
static RP configuration is enabled, the Bootstrap mechanism and C-RP advertisements are automatically