Configuring Administrative Scoping - HP A5500 SI Switch Series Configuration Manual

To do...
Enter system view
Enter public network PIM view
or VPN instance PIM view
Disable the BSM semantic
fragmentation function
NOTE:
Generally, a BSR performs BSM semantic fragmentation according to the MTU of its BSR interface.
However, the semantic fragmentation of BSMs originated due to learning of a new PIM neighbor is
performed according to the MTU of the outgoing interface.

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.
Perform the following configuration on routers that can become a C-BSR and ZBR.
Follow these steps to enable administrative scoping:
To do...
Enter system view
Enter public network PIM view
or VPN instance PIM view
Enable administrative scoping
Configuring an admin-scope zone boundary
ZBRs form the boundary of each admin-scope zone. 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.
Perform the following configuration on routers that can become a ZBR.
Follow these steps to configure an admin-scope zone boundary:
To do...
Enter system view
Enter interface view
Use the command...
system-view
pim [ vpn-instance vpn-instance-
name ]
undo bsm-fragment enable
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
139
Remarks
—
—
Required
By default, the BSM semantic
fragmentation function is
enabled.
Remarks
—
—
Required
Disabled by default
Remarks
—
—