•
Reduce the CPU consumed by the FC processing each elaboration of the packet.
You can use the additional bandwidth to increase the bandwidth of multicast traffic out
of each of the Gigabit Ethernet ports.
Figure 5 on page 19 displays the flow of a multicast packet using the hardware multicast
packet feature.
Figure 5: Packet Flow with Hardware Multicast Packet Replication
Each high-density Ethernet module has eight physical ports, numbered 0–7. A logical
port is available for the hardware multicast packet replication feature, numbered port
8.
JunosE tracks the OIFs in an mroute that have been redirected to use the hardware
multicast packet replication hardware. The system accepts only egress multicast traffic
to traverse the interface stack on the enabled port. The system drops unicast traffic that
is routed to this port.
19Copyright © 2010, Juniper Networks, Inc.
Chapter 1: Configuring IPv4 Multicast
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