3Com MSR 50 Series Configuration Manual page 1180

1180 C 71: PIM C
HAPTER ONFIGURATION
To do...
Enter public instance PIM view
or VPN instance PIM view
Configure a global-scope
C-BSR
Configuring an admin-scope C-BSR
By default, a PIM-SM domain has only one BSR. The entire network should be
managed by this BSR. To manage your network more effectively and specifically,
you can divide a PIM-SM domain into multiple BSR admin-scope regions, with
each BSR admin-scope region having one BSR, which services specific multicast
groups.
Specific to particular multicast groups, the BSR administrative scoping mechanism
effectively lessens the management workload of a single-BSR domain and provides
group-specific services.
In a network divided into BSR admin-scope regions, BSRs are elected from
multitudinous C-BSRs to serve different multicast groups. The C-RPs in a BSR
admin-scope region send C-RP-Adv messages to only the corresponding BSR. The
BSR summarizes the advertisement messages into an RP-set and advertises it to all
the routers in the BSR admin-scope region. All the routers use the same algorithm
to get the RP addresses corresponding to specific multicast groups.
Follow these steps to configure an admin-scope C-BSR:
To do...
Enter system view
Enter public instance PIM
view or VPN instance PIM
view
Enable BSR administrative
scoping
Configure an admin-scope
C-BSR
Configuring a BSR admin-scope region boundary
A BSR has its specific service scope. A number of BSR boundary interfaces divide a
network into different BSR admin-scope regions. Bootstrap messages cannot cross
the admin-scope region boundary, while other types of PIM messages can.
Follow these steps to configure a BSR admin-scope region boundary:
To do...
Enter system view
Enter interface view
Use the command...
pim [ vpn-instance
vpn-instance-name ]
c-bsr global [ hash-length
hash-length | priority
priority ] *
Use the command...
system-view
pim [ vpn-instance
vpn-instance-name ]
c-bsr admin-scope
c-bsr group group-address { mask |
mask-length } [ hash-length
hash-length | priority priority ] *
Use the command...
system-view
interface interface-type
interface-number
Remarks
-
Required
No global-scope C-BSRs by
default
Remarks
-
-
Required
Disabled by default
Optional
No admin-scope BSRs by
default
Remarks
-
-