- Green, 3000 points or more
Looking to do load balancing on a 2801.
I would like it to do per destination load balancing, not per packet. This is easy enough with cef as per destination is the defuault.
The question arises when I also want to run eigrp with unequal cost routes using the variance command. From what I read about load balancing with variance the load balancing method is not per destination but is more like per packet.
Which method would override the other if I had cef enabled for per destination lb and eigrp set up with a variance?
It's my understanding that CEF takes precedence. From Cisco doc on load balancing -
"When you work with CEF, you could ask: Who does the load balancing, CEF or the routing protocol used? The way in which CEF works is that CEF does the switching of the packet based on the routing table which is being populated by the routing protocols such as EIGRP. In short, CEF performs the load-balancing once the routing protocol table is calculated."
So from the above EIGRP will install the routes into the routing table based on your variance and then CEF determines whether to use per-packet or per-destination load balancing.