On JVB
tcpdump host 10.100.120.122 (ip of JMS)
15:55:56.682395 IP lbmeet.company.lan.xmpp-client > lbmeet-jvb-1.51930: Flags [.], ack 1649, win 501, options [nop,nop,TS val 3268330435 ecr 561601237], length 0
15:55:56.682601 IP lbmeet.company.lan.xmpp-client > lbmeet-jvb-1.51930: Flags [P.], seq 3175:3364, ack 1649, win 501, options [nop,nop,TS val 3268330436 ecr 561601237], length 189
15:55:56.682610 IP lbmeet-jvb-1.51930 > lbmeet.company.lan.xmpp-client: Flags [.], ack 3364, win 251, options [nop,nop,TS val 561601238 ecr 3268330436], length 0
15:55:56.682924 IP lbmeet-jvb-1.51930 > lbmeet.company.lan.xmpp-client: Flags [P.], seq 1649:1703, ack 3364, win 251, options [nop,nop,TS val 561601238 ecr 3268330436], length 5415:55:56.683017 IP lbmeet.company.lan.xmpp-client > lbmeet-jvb-1.51930: Flags [.], ack 1703, win 501, options [nop,nop,TS val 3268330436 ecr 561601238], length 0
15:55:56.683056 IP lbmeet.company.lan.xmpp-client > lbmeet-jvb-1.51930: Flags [P.], seq 3364:3402, ack 1703, win 501, options [nop,nop,TS val 3268330436 ecr 561601238], length 3815:55:56.683072 IP lbmeet.company.lan.xmpp-client > lbmeet-jvb-1.51930: Flags [FP.], seq 3402:3426, ack 1703, win 501, options [nop,nop,TS val 3268330436 ecr 561601238], length 24
On JMS:
tcpdump host 10.100.120.123(ip of JVB)
15:58:52.781274 IP lbmeet.company.lan.xmpp-client > 10.100.120.123.52096: Flags [.], ack 1649, win 501, options [nop,nop,TS val 3268746534 ecr 562017336], length 0
15:58:52.781552 IP lbmeet.company.lan.xmpp-client > 10.100.120.123.52096: Flags [P.], seq 3175:3364, ack 1649, win 501, options [nop,nop,TS val 3268746534 ecr 562017336], length 189
15:58:52.781663 IP 10.100.120.123.52096 > lbmeet.company.lan.xmpp-client: Flags [.], ack 3364, win 251, options [nop,nop,TS val 562017336 ecr 3268746534], length 0
15:58:52.781921 IP 10.100.120.123.52096 > lbmeet.company.lan.xmpp-client: Flags [P.], seq 1649:1703, ack 3364, win 251, options [nop,nop,TS val 562017337 ecr 3268746534], length 54
15:58:52.781972 IP lbmeet.company.lan.xmpp-client > 10.100.120.123.52096: Flags [.], ack 1703, win 501, options [nop,nop,TS val 3268746535 ecr 562017337], length 0
15:58:52.782103 IP lbmeet.company.lan.xmpp-client > 10.100.120.123.52096: Flags [P.], seq 3364:3402, ack 1703, win 501, options [nop,nop,TS val 3268746535 ecr 562017337], length 38
On jvb.log, I have an warning message:
JVB 2022-02-04 16:10:36.675 AVERTISSEMENT: [28] [hostname=lbmeet.company.lan id=shard] MucClient.setPresenceExtensions#445: Cannot set presence extension: not connected.
JVB 2022-02-04 16:10:39.072 INFOS: [22] [hostname=lbmeet.company.lan id=shard] MucClient$2.connected#301: Connected.
JVB 2022-02-04 16:10:39.072 INFOS: [22] [hostname=lbmeet.company.lan id=shard] MucClient.lambda$getConnectAndLoginCallable$7#624: Logging in.
JVB 2022-02-04 16:10:39.073 AVERTISSEMENT: [22] [hostname=lbmeet.company.lan id=shard] MucClient.lambda$getConnectAndLoginCallable$7#638: Failed to login. Disconnecting to trigger a re-connect.
It tried to connect to the host but did not succeed.