Forum Discussion
NimbostratusHA sync problem after upgrade from v17.11 to v17.1.1.1
MVPTake a look at the following resources:
https://my.f5.com/manage/s/article/K75975904
https://my.f5.com/manage/s/article/K13946
Remember.... make sure both dedicated TMM IP addresses for HA have connectivity. Port lockdown should be set to default here. Make sure you have device trust in place, and both devices were able to share their SSL device certs (make sure they are valid and not expired). For Configsync, make sure you use TMM IP address, for Network Failover be sure to use BOTH TMM IP address and management IP address, and selectively configure mirroring if you like. Make sure all of these settings are checked on BOTH units. Make sure the device group has both devices in it. Make sure time is synced to at least 3 time sources (check via ntpq -p via CLI).
NimbostratusThank you Whisper
I¨ve checked all the settings which you have suggested and I went through both articles.
Everything is OK.
It looks like something is blocking outbound traffic on port 4353 at the TMM level. Because, if I try telnet on port 4353 from the device 2 to the device 1, I can't capture any packets anywhere. (not even on the device 2) But from the device 1 in oposite direction the telnet comunication is OK
