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  1. Bug #1340989
  2. Comment #8

Comment 8 for bug 1340989

Revision history for this message
Aleksandr Didenko (adidenko) wrote :

Tcpdump output example on eth2:

14:13:18.323037 IP 10.109.2.4 > 10.109.2.7: GREv0, key=0x0, length 98: IP6 fe80::ec12:64ff:fe76:3d82 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
14:13:18.323038 IP 10.109.2.4 > 10.109.2.6: GREv0, key=0x0, length 98: IP6 fe80::ec12:64ff:fe76:3d82 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
14:13:18.323039 IP 10.109.2.4 > 10.109.2.3: GREv0, key=0x0, length 98: IP6 fe80::ec12:64ff:fe76:3d82 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
14:13:18.323039 IP 10.109.2.4 > 10.109.2.5: GREv0, key=0x0, length 98: IP6 fe80::ec12:64ff:fe76:3d82 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
14:13:18.323041 IP 10.109.2.4 > 10.109.2.6: GREv0, key=0x0, length 98: IP6 fe80::ec12:64ff:fe76:3d82 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28
14:13:18.323042 IP 10.109.2.4 > 10.109.2.5: GREv0, key=0x0, length 98: IP6 fe80::ec12:64ff:fe76:3d82 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28

Please note the frequency (timestamps).

As soon as this traffic disappears, load (including sowftare interrupts) goes back to normal, bandwidth goes down from 100+ Mbps to 70-300 Kbps on eth2 and br-mgmt.