topic Packet lost during HA Failover in General Topics

Packet lost during HA Failover

pkathiria — Tue, 23 Apr 2019 19:16:54 GMT

I am seeing few packet lost when its switching over to passive mode. is there any way to prevernt this?

Re: Packet lost during HA Failover

kiwi — Wed, 24 Apr 2019 09:09:26 GMT

Please add more details on how your HA is configured.

For now you might want to check the HA best practices guide and verify if there are areas that you might 'improve' upon in your configuration :

HA ACTIVE/PASSIVE BEST PRACTICES

Cheers !

-Kiwi.

Re: Packet lost during HA Failover

Brandon_Wertz — Wed, 24 Apr 2019 12:20:30 GMT

Can you add a bit more detail on how you're identifying the packet loss? What issues are you having? How is your HA setup? Are you directly connected, or is it connected via a switched environment?

Re: Packet lost during HA Failover

pkathiria — Wed, 24 Apr 2019 22:23:27 GMT

Hi Brendon,

HA is connected to the thier dedicated ports ( 5250). I did followed the best practise for HA active/passive. When active is failing over to passive i am seeing few packet lost. I am testing though multiple way like changing the priority, Link monitoring, rebooting active device. HA timer seta as a recommended.

Re: Packet lost during HA Failover

Brandon_Wertz — Thu, 25 Apr 2019 13:31:11 GMT

@pkathiria wrote:
Hi Brendon,

HA is connected to the thier dedicated ports ( 5250). I did followed the best practise for HA active/passive. When active is failing over to passive i am seeing few packet lost. I am testing though multiple way like changing the priority, Link monitoring, rebooting active device. HA timer seta as a recommended.

When I say "Can you add a bit more detail on how you're identifying the packet loss? " that doesn't mean changing device priority...I mean are you watching a video on youtube...browsing a website, doing an FTP session...ping...What are you doing that's letting you know you have packet loss and how much are you actually seeing?

When you say you're using the dedicated ports what ports are you using? HA1-A and HA1-B only? HCSI port? Any other ports defined for HA2?

Re: Packet lost during HA Failover

BPry — Sun, 28 Apr 2019 04:15:35 GMT

@pkathiria,

To add to what @Brandon_Wertz has already requested another important piece of this would be to know how your firewall is actually deployed? Are you running a simple v-wire deployment, layer2 interfaces, layer3 interfaces, any aggregates deployed?

There is a lot of areas that can cause a small amount of downtime during a failover event, but to single out what's actually going on we need more information.