VIAVI TestCenter: How to verify IGMP join latency values with reference to PCAP file?
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VIAVI TestCenter: How to verify IGMP join latency values with reference to PCAP file?
• To calculate the latency values, we must match the VLAN ID's of the with the first multicast data packet timestamp
192.85.2.2 VLAN 100
Join Tx @ 12.126181290 (igmp && ip.src==192.85.2.2 && vlan.id==100)
1st Arrival @ 12.136283320 (ip.dst==225.0.0.1 && vlan.id==100)
Latency 0.01010203 sec -> 10.10203 msec
192.85.3.2 VLAN 101
Join Tx @ 12.128900250 (igmp && ip.src==192.85.3.2 && vlan.id==101)
1st Arrival @ 12.136227010 (ip.dst==225.0.0.1 && vlan.id==101)
Latency 0.00732676 sec -> 7.32676 msec
Attached PCAP for reference.