In one of the development phases in our network, we have to load balance traffic flow on ether channel. But traffic flow is MPLS tagged.after some checking we have found out MPLS tagged traffic is not correctly load-balanced. Same configuration works correctly on normal traffic flow and load balanced.
Output of command "show etherchannel load" :
Non-ip : source XOR destination MAC
So I think 3750 load balances MPLS packet as non-ip packet and based on src-dst-Mac.
Is there any solution that switch can load balance based on layer 3 parameters, src ip and dst ip ?
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>> Is there any solution that switch can load balance based on layer 3 parameters, src ip and dst ip ?
No, this is not possible on a C3750.
Your only available options are source-MAC or destination-MAC but I'm afraid it will not provide better results
high end switches like C6500 should be able to handle MPLS traffic over a bundle.
but this is not possible on C3750
Hope to help
From the link you provided, source/destination IP is available on the 3750s
With source-and-destination IP address-based forwarding, packets are sent to an EtherChannel and distributed across the EtherChannel ports, based on both the source and destination IP addresses of the incoming packet. This forwarding method, a combination of source-IP and destination-IP address-based forwarding, can be used if it is not clear whether source-IP or destination-IP address-based forwarding is better suited on a particular switch. In this method, packets sent from the IP address A to IP address B, from IP address A to IP address C, and from IP address C to IP address B could all use different ports in the channel.
Switch(config)#port-channel LOad-balance ?
dst-ip Dst IP Addr
dst-mac Dst Mac Addr
src-dst-ip Src XOR Dst IP Addr
src-dst-mac Src XOR Dst Mac Addr
src-ip Src IP Addr
src-mac Src Mac Addr
The 3750 series switches do not support MPLS. They only support VRF Lite
Unfortunately 2960 and 2750 and many other switches from cisco can not load balance MPLS packet tagged.
According to cisco documentats Only model from cisco that can load balances MPLS packet tagged is 6500 family with sepcial hardware.
sorry I could not find that document.but I am sure you can find it with some search on cisco web site.