Register - Alcatel OmniSwitch 6624 Troubleshooting Manual

Troubleshooting PIM-SM

Register

When a source starts transmitting to a multicast group, the DR on the segment encapsulates the data and
sends it as unicast to the RP representing the group. The source IP address will be the DR and the destina-
tion IP address will be the RP. Two behaviors are possible:
1-The RP joins the source tree by sending a PIM join to the DR. Packets will then flow from the source to
the RP unencapsulated.
2-The RP does not join the source tree. The multicast packets will be encapsulated by the DR and send to
the unicast address of the RP.
Upon reception of the multicast stream, the RP forwards the packets unencapsulated to receivers if any. If
there are no receivers the RP issues a REGISTER STOP message to the source.
SOURCE
225.1.1.1
3 Com
192.168.13.101
OmniSwitch Troubleshooting Guide
192.168.13.1
3 Com
DR
192.168.11.1
3 Com
192.168.11.2
September 2005
BSR
192.168.12.1
REGISTER for
225.1.1.1
RP for 225.1.1.1
Register
3 Com
192.168.12.2
page 16-21