topic Re: IKEv2 renegotiation on acceptor gateway reboot in General Topics

IKEv2 renegotiation on acceptor gateway reboot

rameshgi — Thu, 12 Apr 2018 17:37:19 GMT

Hi community,

I have a site-to-site IPSec connectivity with Palo Alto gateway (PA-VM 8.0.5 on kvm hypervisor - CentOS 7 host) on one end as initiator and Vyatta OS based gateway on the other end as acceptor.

When IKEv2 and IPSec (and BGP) are in established state, and the Vyatta OS reboots, it takes about 6 minutes for PA-VM to detect outage and renegotiate IKEv2.

The IKE Crypto has "Key Lifetime" set to 8 hours.

My question:

1. What configuration needs to be done (or can be done) in PA-VM for IKE to negotiate sooner ? (Is it a good idea to set Key Lifetime param in IKE Crypto to 3 minutes ?)

2. What is the industry best practice for setting up site-to-site VPNs in order to minimize outages due to peer firewall going down ?

Regards

Thanks in advance.

Re: IKEv2 renegotiation on acceptor gateway reboot

BPry — Thu, 12 Apr 2018 19:35:55 GMT

@rameshgi,

I imagine that you are not doing any tunnel monitoring?

Re: IKEv2 renegotiation on acceptor gateway reboot

rameshgi — Thu, 12 Apr 2018 19:50:18 GMT

Hi @BPry,

I did use tunnel-monitoring with the following params, and associated it with the IPSec tunnel:

1. Action - Wait-Recover

2. Interval - 2 secs

3. Threshold - 2 secs

Regards