Alcatel-Lucent 6850-48 网络指南

IPMV Packet Flows

Configuring IP Multicast VLAN

page 43-8

OmniSwitch AOS Release 6 Network Configuration Guide

In the Enterprise mode, two types of control packets ingress on the receiver ports. The paths taken by the 
packets (as shown in the diagram on 

) are described in the following subsections.

The following steps describe the path taken by untagged control packets ingressing on the receiver port:

1 Untagged IPMS join reports for the multicast group G1 are sent to the receiver port.

2 The IPMS reports sent to the CPU of the Ethernet switch are single-tagged with the default VLAN.

3 IPMS overwrites the tag with the IPMV tag after IPMV table lookup. 

4 A single IPMS report, single-tagged with IPMV, is sent to the multicast server for group G1.

5 The single multicast data packet, single-tagged with IPMV, is generated by the multicast server for 
group G1.

6 The generated multicast data packets are flooded on the receiver port. These data packets are untagged.

The following steps describe the path taken by tagged control packets ingressing on the receiver port:

1 The single-tagged IPMS join reports for the multicast group G1 are sent to the receiver port.

2 The IPMS reports are sent to the CPU of the Ethernet switch.

3 IPMS overwrites the tag with the IPMV tag after IPMV table lookup.

4 A single IPMS report, single-tagged with IPMV, is sent to the multicast server for group G1.

5 The single multicast data packet, single-tagged with IPMV, is generated by the multicast server for 
group G1.

6 The generated multicast data packets are flooded on the receiver port. These data packets are untagged.