topic Re: Pix OSPF load balancing question in Network Security

Pix OSPF load balancing question

jbrunner007 — Fri, 21 Feb 2020 09:14:53 GMT

I have a pix 515e with two default routes, learned via OSPF from two routers on the "outside" interface.

Currently router#2 is being preferred way much more than router#1. There are many thousands of destinations for the traffic. These two routers are further doing NAT to nat rfc1918 ip's to the internet (the pix is NOT doing nat)

Can someone please let me know how the PIX does load balancing? is it by IP address destination? is it something else?

thanks,

Joe

Re: Pix OSPF load balancing question

cpembleton — Fri, 20 Oct 2006 12:45:01 GMT

The pix does not do load balancing. Your only option would be to configure the upstream routers to load balance.

Thanks,

Chad

Re: Pix OSPF load balancing question

mlitka — Thu, 22 Mar 2007 02:55:49 GMT

Per TAC:

"the PIX will do per-destination Load Balancing instead of per packet

load balancing. The algorithm will look at the source and destination

addresses. It does not do 1:1 load balancing. Given enough different

source and destination addresses, the packets will more or less reach a

50/50 spit between the two next-hops. However, in real world testing

with the same source and destination addresses, it may not reach an even

load balancing."