Mld Statistics; Blocking And Limiting Multicast Traffic; Blocking Mroutes - Juniper JUNOSE 11.0.X MULTICAST ROUTING Configuration Manual

JUNOSe 11.0.x Multicast Routing Configuration Guide
Use the show ipv6 interface command to display statistics for an IPv6 interface
configured over port 8. For more information, see Monitoring IPv6 in JUNOSe IP, IPv6,
and IGP Configuration Guide.
Multicast traffic redirected by the hardware multicast packet replication feature is
displayed in the statistics for the IPv6 or VLAN interface over port 8, not the original
IP or VLAN interface over the physical port.
The statistics for the IPv6 or VLAN interface over port 8 reflect the number of packets
that passed through this interface destined for the hardware multicast packet
replication hardware. These statistics have no direct correlation to the number of
packets being transmitted from any of the physical ports.

MLD Statistics

Use the show ipv6 mld interface command to display statistics, including hardware
multicast packet replication status, for an IPv6 interface stacked over port 8. For
more information, see "Monitoring MLD" on page 199 in "Configuring Multicast
Listener Discovery" on page 183.

Blocking and Limiting Multicast Traffic

You can either block mroute creation, limit the multicast bandwidth admitted on an
outgoing interface, or limit outgoing interface creation on a port.

Blocking Mroutes

By default, when an interface receives multicast traffic, even when the scope of that
traffic exceeds link-local, the virtual router creates an mroute. You can use the ipv6
block-multicast-sources command to block all multicast traffic with a scope larger
than link-local (for example, global) and prevent mroute creation under these
conditions.
NOTE: Issuing this command does not affect reception of link-local multicast packets.
ipv6 block-multicast-sources
168
Blocking and Limiting Multicast Traffic
Use to prevent mroute creation by blocking multicast traffic that has a scope
larger than link-local (for example, global).
Example
host1(config)#ipv6 block-multicast-sources
Use the no version to restore the default behavior of creating mroutes on receiving
multicast packets.
See ipv6 block-multicast-sources.