Page 23 — legacy-tech-doc-10559

MCAST-IGMPQ:recvd an IGMP V2 Report on the port 3/2 vlanNo 3 GDA 224.10.10.10 MCAST-RELAY:Relaying packet on port 3/1 vlanNo 3 MCAST-SEND: Inband Transmit Succeeded for IGMP RELAY msg on port 3/1 vlanNo 3 Switch_B (enable) show cam static

= Static Entry. + = Permanent Entry. # = System Entry. R = Router Entry. X = Port Security Entry VLAN Dest MAC/Route Des [CoS] Destination Ports or VCs / [Protocol Type]

3 01-00-5e-0a-0a-0a 3/1-2 Add one more user in VLAN 3 on port 3/3, as shown below. Switch_B (enable) show cam static

= Static Entry. + = Permanent Entry. # = System Entry. R = Router Entry. X = Port Security Entry VLAN Dest MAC/Route Des [CoS] Destination Ports or VCs / [Protocol Type]

3 01-00-5e-0a-0a-0a 3/1-3 4. Remove port 3/2. Port 3/2 sends an IGMP Leave message; the switch sends back an IGMP group-specific query on port 3/2 and starts a timer. When the timer expires without receiving a response, it deletes the port from the group. MCAST-IGMPQ:recvd an IGMP Leave on the port 3/2 vlanNo 3 GDA 224.10.10.10 MCAST-IGMPQ-LEAVE:router_port_tbl[vlanNo].QueryTime = 0 MCAST-DEL-TIMER: Deletion Timer Value set to Random Value 1 MCAST-SEND:Transmitting IGMP Mac Based GS Query msg on port 3/2 vlanNo 3 MCAST-SEND: Transmit Succeeded for IGMP Group Specific Query msg on port 3/2 vlanNo 3 MCAST-TIMER:IGMPLeaveTimer expired on port 3/2 vlanNo 3 GDA 01-00-5e-0a-0a-0a MCAST-TIMER:IGMPLeaveTimer:delete leave timer Switch_B (enable) show cam static

= Static Entry. + = Permanent Entry. # = System Entry. R = Router Entry. X = Port Security Entry VLAN Dest MAC/Route Des [CoS] Destination Ports or VCs / [Protocol Type]

3 01-00-5e-0a-0a-0a 3/1,3/3 5. The host on port 3/3 leaves the group and sends an IGMP Leave message. The only difference from the previous point is that the IGMP Leave message is finally forwarded to the router port. MCAST-IGMPQ:recvd an IGMP Leave on the port 3/3 vlanNo 3 GDA 224.10.10.10 MCAST-SEND:Transmitting IGMP Mac Based GS Query msg on port 3/3 vlanNo 3 MCAST-SEND: Transmit Succeeded for IGMP Group Specific Query msg on port 3/3 vlanNo 3 MCAST-TIMER:IGMPLeaveTimer expired on port 3/3 vlanNo 3 GDA 01-00-5e-0a-0a-0a MCAST-TIMER:IGMPLeaveTimer expiry: Transmit IGMP Leave on port 3/1 vlanNo 3 MCAST-SEND:Transmitting IGMP Leave msg on port 3/1 vlanNo 3 6.