Operation Manual – Multicast Protocol
H3C S3610&S5510 Series Ethernet Switches
Chapter 6 PIM Configuration
6-23
To do...
Use the command...
Remarks
Configure a global-scope
C-BSR
c-bsr global
[
hash-length
hash-length
|
priority
priority
] *
Required
No global-scope C-BSRs
by default
III. 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 serves 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...
Use the command...
Remarks
Enter system view
system-view
—
Enter PIM view
pim
—
Enable BSR
administrative scoping
c-bsr admin-scope
Required
Disabled by default
Configure an
admin-scope C-BSR
c-bsr group group-address
{
mask | mask-length
}
[
hash-length hash-length
|
priority
priority
] *
Optional
No admin-scope
BSRs by default
IV. 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.
