The high-priority queue is dedicated to packets that are received from the line module
queue for port 8. This queue is serviced at a higher priority than the first queue, and drops
packets when full.
For more information about high-density Ethernet, see Configuring Ethernet Interfaces in
JunosE Physical Layer Configuration Guide.
Supported Modules and Encapsulations
You can enable optimized multicast packet replication on port 8 of the following
high-density Ethernet modules:
•
GE-8 I/O module (pairs with the GE-HDE line module)
•
ES2-S1 GE-8 IOA (pairs with the ES2 4G LM and the ES2 10G LM)
When enabled, the optimized multicast packet replication feature defines the
encapsulation of the egress multicast packet. The following encapsulations are supported:
•
IPv6 over Gigabit Ethernet
•
IPv6 over VLAN
•
IPv6 over S-VLAN
NOTE: 802.3ad link aggregation group (LAG) bundles do not support optimized
multicast packet replication.
The optimized multicast packet replication feature also provides an interface over which
you can configure the following:
•
IP MTU
•
Ethernet MTU
•
Egress IP policy
•
Egress VLAN policy
•
QoS
Relationship with OIF Mapping
Multicast OIF mapping enables the router to decrease the inefficiencies associated with
replicating streams of multicast traffic. Using OIF maps, MLD joins that the router receives
on a subscriber interface can be mapped to a special interface for forwarding.
The hardware multicast packet replication feature enables you to redirect each of the
IPv6 interfaces on a line module over a dedicated multicast VLAN to a single IPv6 interface
over port 8. The FC is only required to send a single packet per dedicated multicast VLAN
to the I/O module or IOA. The module then replicates this packet to the appropriate ports.
For more information about configuring OIF mapping, see “Configuring Group Outgoing
Interface Mapping” on page 184 in “Configuring Multicast Listener Discovery” on page 175.
157Copyright © 2010, Juniper Networks, Inc.
Chapter 5: Configuring IPv6 Multicast
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