Enhanced Security Measures in Place:   To ensure a safer experience, we’ve implemented additional, temporary security measures for all users.

DUAL ISP IPSEC TUNNEL ECMP

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
Announcements

DUAL ISP IPSEC TUNNEL ECMP

L3 Networker

Hi,

 

Firewall

DUAL ISP

ISP1 ETH1/1 IPSEC TUNNEL 1

ISP1 ETH1/2 IPSEC TUNNEL 2

 

ECMP Method HASH

 

I have ECMP enabled with DUAL ISP with two IPSEC tunnels going to another firewall with one ISP. What I am seeing is sometimes is IPSEC tunnel from Eth1/1 to the other firewall going over Eth1/2. How do I prevent this?


Thanks

3 REPLIES 3

Cyber Elite
Cyber Elite

ECMP  = Equal Cost... with Dual ISP.

 

By your design, you are agreeing/wanting for the FW to load-share between Eth1 and Eth2.


If you do not want this, then turn on the ECMP function, and only let the traffic go out via eth1.

If the VPN fails, then there should be a Monitor Profile, that the VPN can use, to initiate a backup tunnel on eth2.

 

Help the community: Like helpful comments and mark solutions

L1 Bithead

You would have to enable the strict source path. This feature was introduced in PanOS 10.0 - https://docs.paloaltonetworks.com/pan-os/10-0/pan-os-new-features/networking-features/ecmp-strict-so...

L2 Linker

Hi @junior_r, were you able to get to the bottom of this?

  • 5530 Views
  • 3 replies
  • 0 Likes
Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the LIVEcommunity as a whole!

The LIVEcommunity thanks you for your participation!