Would like your assistance please regarding below issue
We are having 5 TE tunnels going to same destination and we are doing load-balancing between these 5 LSPs TE tunnels.
Command "mls ip cef load-sharing full simple" is configured so that CEF will use L4 ports in its algorithm
Problem that due to CEF behavior, 2 link are v.highly utilized and the other 3 utilization are below average
What I am thinking of but not sure If this will help or not is to have 2 TE tunnels instead of 5
1 TE tunnel load balancing on 3 links ( This can be done by using static route to tail loopback poiting to the 3 links) and another TE tunnel load balancing on the other 2 links
By doing this, I think CEF would be used 2 times; first to determine which TE tunnel to use then to determine which link within the tunnel
Will this help ?
ip unnumbered Loopback0
tunnel destination 10.0.0.1
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng autoroute announce
tunnel mpls traffic-eng path-option 1 dynamic
tunnel mpls traffic-eng fast-reroute
ip route 10.0.0.1 255.255.255.255 link-2
ip route 10.0.0.1 255.255.255.255 link-3
traffic of a single TE tunnel will not be load balanced over multiple physical links as the TE tunnel is setup using a reservation and the path will use only one link for each router hop.
So moving to two TE tunnels is not an option for you.
Hope to help
Do you have the option of using LAGs (Portchannels)
- if so then your tunnel will select one link-group instead of another but you will have loadbalancing within you LAG group.