Limiting Interface Admission Bandwidth; Enabling Interface Admission Bandwidth Limitation; Oif Interface Reevaluation Example - Juniper JUNOSE 11.0.X MULTICAST ROUTING Configuration Manual

Limiting Interface Admission Bandwidth

Interface-level multicast admission control is performed when an OIF on the interface
is added to the mroute for a given (S,G) multicast data stream and the multicast
bandwidth map contains a set admission-bandwidth action for that (S,G).
When enabled, the admission-bandwidth for a particular (S,G) is read from the
multicast bandwidth map and recorded in the mroute when the (S,G) mroute is
created. When an IOF is subsequently added to the mroute, the OIF is blocked from
forwarding data if the additional bandwidth contributed by the (S,G) would exceed
the admission-bandwidth limit for the interface.
CAUTION: Before you can limit interface-level admission bandwidth, you must first
create a bandwidth map. See "Defining a Multicast Bandwidth Map" on page 154 for
details.

Enabling Interface Admission Bandwidth Limitation

You can use the ipv6 multicast admission-bandwidth-limit command to enable
multicast admission control on interfaces (including dynamic IP interfaces) that are
configured to run MLD. You can also use this command on a PIM (sparse-mode,
dense-mode, or sparse-dense-mode) interface if MLD is configured on the interface
(including the ipv6 mld version passive command).
ipv6 multicast admission-bandwidth-limit

OIF Interface Reevaluation Example

If you change the admission bandwidth for an interface, all mroutes with that interface
as an OIF are reevaluated as follows:
Use to limit bandwidth for an interface that accepts MLD groups.
Use on any interface configured to run MLD.
Can also configure on a PIM (sparse-mode, dense-mode, or sparse-dense-mode)
interface if MLD (which you can configure using the ipv6 mld version passive
command) is also configured on the interface.
Example
host1:boston(config-if)#ipv6 multicast admission-bandwidth-limit 2000000
Use the no version to remove the bandwidth limitation for the interface.
See ipv6 multicast admission-bandwidth-limit.
If the bandwidth limit is increased, blocked OIFs may become unblocked. If the
interface is a blocked OIF on multiple mroutes, the order in which the mroutes
are visited, and which (S,G) streams become unblocked, is not specified.
Chapter 5: Configuring IPv6 Multicast
Blocking and Limiting Multicast Traffic
169