topic Re: high latency after HA failover in General Topics

high latency after HA failover

Carracido — Wed, 22 Aug 2018 15:38:41 GMT

Hello team,

I have an HA active/passive with a couple of PA-3250. After failover from active to passive there are a high latency for all the connections and some Http/https sessions cannot be established. I see in the traffic logs many aged out sessions and tcp-rst-from-server and also tcp-rst-from-client. After one minute aprox. the system gets stable. Is this expected behavior?

Thanks and Regards,

Marcos.

Re: high latency after HA failover

BPry — Wed, 22 Aug 2018 16:43:34 GMT

@Carracido,

It can be expected behaviour depending on the configuration.

You aren't by chance using LACP aggregates for anything are you?

Re: high latency after HA failover

Carracido — Wed, 22 Aug 2018 17:01:29 GMT

Hi BPry,

Thanks for you answer.

No I´m not using LCAP.

Regards,

Marcos.

Re: high latency after HA failover

BPry — Wed, 22 Aug 2018 17:03:53 GMT

@Carracido,

Then I really wouldn't expect that much of a delay unless your hitting an issue with STP. Have you verified that you aren't just hitting a normal delay as the network reconverges following the failover?

Re: high latency after HA failover

robertocol — Tue, 21 Nov 2023 14:42:03 GMT

Hi i'm experiencing same issue here but i have 1 lacp connection. How should it lead to high latencies?