Load Balancing on ASA: 4 different providers

[Ilya Semenov]

Hello, everybody!

My question is very simple: Are there any other methods for load balancing on ASA 5525, except this?

https://supportforums.cisco.com/t5/security-documents/loadbalancing-dual-isp-on-asa/ta-p/3127108 

So, If I have 4 ISPs, should I split 0.0.0.0/0 range into 4 address spaces, right?

Many thanks in advance,

Ilya

[LJ Gabrillo]

Cisco ASA now supports Traffic Zone w/c allows you to configure ECMP w/c is basically your requirement. BUT this is very limited.

Give it a read here: https://www.cisco.com/c/en/us/td/docs/security/asa/asa93/configuration/general/asa-general-cli/interface-zones.html

Again, i discourage using this since again, this is very limited. You can't configure an algorithm i.e., round-robin, least-connections, etc. etc. The document should also explain how ASA load balances that

PS: Considering you have 4 ISPs, guessing you CAN afford, consider buying an actual Link-Load Balancer :) :)

Also, honestly, 4 ISPs cost wise for me, is not a very good decision considering you don't have an LLB deployed in your network.

[carlos.perez1]

Hi experts,
I have the following scenario with some Cisco ASA 5525x

It turns out that our client has 2 Internet Outlets with 2 different internet providers,

We have an ASA 5525x and a Barracuda which is in charge of balancing the internet traffic, but lately it has had problems with its Barracuda and wants to take it out, but it informs us if the ASA has functionalities of doing load balancing towards the internet?

We want to put 2 ASA 5545 or a Firepower depending on the features it has, but I can not find a document in which they detail if the ASA do load balancing the internet?

Currently the barracuda you have if you balance the internet.
If I remove these barracuda, can the ASAs have that functionality?

I look forward to your valuable support.

regards
Carlos P.