Configuring Administrative Scoping - HP A6600 Configuration Manual

Configuring administrative scoping

When administrative scoping is disabled, a PIM-SM domain has only one BSR. The BSR manages the
whole network. To manage your network more effectively and specifically, partition the PIM-SM domain
into multiple admin-scope zones. Each admin-scope zone maintains a BSR, which serves a specific
multicast group range. The global scope zone also maintains a BSR, which serves all the remaining
multicast groups.
Enabling administrative scoping
Before you configure an admin-scope zone, you must enable administrative scoping first.
Perform the following configuration on routers that you want to configure as a C-BSR and ZBR.
To do...
1. Enter system view.
2. Enter public network PIM view
or VPN instance PIM view.
3. Enable administrative
scoping.
Configuring an admin-scope zone boundary
The boundary of each admin-scope zone is formed by ZBRs. Each admin-scope zone maintains a BSR,
which serves a specific multicast group range. Multicast protocol packets (such as assert messages and
bootstrap messages) that belong to this range cannot cross the admin-scope zone boundary.
To do...
1. Enter system view.
2. Enter interface view.
3. Configure a multicast
forwarding boundary.
The group-address { mask | mask-length } parameter of the multicast boundary command can be used to
specify the multicast groups an admin-scope zone serves, in the range of 239.0.0.0/8. For more
information about the multicast boundary command, see IP Multicast Command Reference.
Configuring C-BSRs for each admin-scope zone and the global-scope zone
In a network with administrative scoping enabled, group-range-specific BSRs are elected from C-BSRs.
C-RPs in the network send advertisement messages to the specific BSR. The BSR summarizes the
advertisement messages to form an RP-set and advertises it to all routers in the specific admin-scope zone.
All the routers use the same hash algorithm to get the RP address corresponding to the specific multicast
group.
Configure C-BSRs for each admin-scope zone and the global-scope zone. Complete the following
configuration on the routers that you want to configure as C-BSRs in admin-scope zones.
To do...
1. Enter system view.
Use the command...
system-view
pim [ vpn-instance
vpn-instance-name ]
c-bsr admin-scope
Use the command...
system-view
interface interface-type
interface-number
multicast boundary group-address
{ mask | mask-length }
Use the command...
system-view
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Remarks
—
—
Required.
Disabled by default.
Remarks
—
—
Required.
By default, no multicast
forwarding boundary is
configured.
Remarks
—