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host1(config)#ipv6 multicast-routing permanent-mroute routesv61

• Use the no version to prevent any new mroutes from becoming permanent. To remove

existing permanent mroutes, use the clear ipv6 mroute command.

• See ipv6 multicast-routing permanent-mroute

Defining a Multicast Bandwidth Map

Multicast interface-level admission control, port-level admission control, and QoS

adjustment all use a single multicast bandwidth map. The multicast bandwidth map is

a route map that uses the set admission-bandwidth, set qos-bandwidth, set

admission-bandwidth adaptive, or set qos-bandwidth adaptive commands. The

adaptive commands configure an auto-sense mechanism for measuring the multicast

bandwidth.

NOTE: Even though you can include any of the above commands several times in a

route map entry, only the last admission-bandwidth command or qos-bandwidth

command in the bandwidth map is used. In other words, if you included the set

qos-bandwidth command first and then the set qos-bandwidth adaptive command,

the bandwidth map would use the set qos-bandwidth adaptive command.

Interface- and port-level admission control is performed when an OIF on the interface

or port is added to the mroute for a given (S,G) multicast data stream and the multicast

bandwidth map contains a set admission-bandwidth or set admission-bandwidth

adaptive action for that (S,G).

QoS adjustment is performed on the joining interface when an OIF is added to the mroute

for a given (S,G) data stream and the multicast bandwidth map contains a set

qos-bandwidth or set qos-bandwidth adaptive action for that (S,G).

NOTE: You can create a single route map with the set admission-bandwidth command,

the set qos-bandwidth command, or both. However, creating an entry with only one of

these set commands enables only that specific function for the matched address (that

is, only multicast traffic admission control or only QoS adjustment). The same is true

for the adaptive commands.

Using the Auto-Sense Mechanism

Video bandwidth is typically considered to be a constant rate—2 Mbps for standard

definition television (SDTV) and 10 Mbps for high definition television (HDTV). However,

in reality, and depending on achievable video compression, the bit rate can vary. For

example, HDTV streams (using MPEG4 or WM9 encoding) can vary between 6 Mbps

(for low-action programs) to 10 Mbps (for a fast-paced, high-action programs). The

auto-sense mechanism allows the bandwidth value, used for admission control and QoS

adjustment, to be the actual measured rate of the stream. Using this feature to measure

the actual bandwidth avoids the need to configure arbitrary bandwidth limits and enables

JunosE 11.2.x Multicast Routing Configuration Guide

Juniper JUNOSE 11.2.X MULTICAST ROUTING User Manual

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