topic Re: What happens to active sessions in Dual ISP Scenario in General Topics

What happens to active sessions in Dual ISP Scenario

raji_toor — Tue, 04 Aug 2020 14:47:34 GMT

We have 2 ISP's, primary is down right now. Both ISP's connect to different interfaces. When Primary comes up, the interface will be different for outgoing/incoming traffic. Will the active rdp/web sessions/GlobalProtect/IPSEC tunnels drop when primary link becomes active again. Or will it be seamless.

Re: What happens to active sessions in Dual ISP Scenario

RamprakashRT — Thu, 06 Aug 2020 18:08:22 GMT

Hi @raji_toor ,

Great question . As per my understanding established sessions will not follow the route lookup so in this case it will continue to use ISP 2 once the ISP 1 became active. New sessions initiated will route through ISP 1. Hope it helps.

Thanks,

Ram

Re: What happens to active sessions in Dual ISP Scenario

raji_toor — Thu, 06 Aug 2020 19:45:09 GMT

Yes, existing sessions take some time to route through ISP1. We were in this situation yesterday and can confirm it.