[c-nsp] CEF Load balancing over Etherchannel (3750)

[Paul]

Other end doesn't matter, the load balance is only for outgoing packets.
#show etherchannel load-balance
EtherChannel Load-Balancing Configuration:
        src-ip

EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source MAC address
  IPv4: Source IP address
  IPv6: Source IP address

show int gi1/0/1 | i rate
  Queueing strategy: fifo
  30 second input rate 16054000 bits/sec, 4330 packets/sec
  30 second output rate 0 bits/sec, 0 packets/sec

show int gi1/0/2 | i rate
  Queueing strategy: fifo
  30 second input rate 14813000 bits/sec, 3410 packets/sec
  30 second output rate 46097000 bits/sec, 7962 packets/sec


Grumble..


Dan Sabau wrote:
> Did you tried on both ends of the portchannel?
> i'm running: Cisco IOS Software, C3750 Software 
> (C3750-ADVIPSERVICESK9-M), Version 12.2(35)SE2, RELEASE SOFTWARE (fc1)
>
>
> Paul wrote:
>> This doesn't work on 3750.  I tried.  Also tried changing cef algorithm
>> to universal 1 and also universal with some random hex... Apparently
>> even the src-ip follows the same rule as the CEF load balancing.
>> Too bad we can't change per port channel balancing :P
>>
>> Dan Sabau wrote:
>>> Had the same problem, I've change the way etherchannel load balances 
>>> the link to:
>>> port-channel load-balance src-ip
>>> and every thing was ok after.
>>>
>>> Paul wrote:
>>>> Does anyone know how to make CEF load balancing work over 
>>>> etherchannels and actually load balance on the etherchannel?
>>>> I have two GEC interfaces with 2 ports in each, and then I have two 
>>>> routes multipath, one to each GEC interface
>>>> The problem is that the CEF algorithm is the same as the 
>>>> etherchannel algorithm and each one of the etherchannels ends up 
>>>> only sending out one of the two ports so it is not load 
>>>> balancing.   I have tried changing the port-channel load-balance 
>>>> setting to various things (I can not use MAC because it's from one 
>>>> router to another) and I have tried changing the cef load sharing 
>>>> algorithm.
>>>> Maybe this is a limitation of the 3750 platform? I have not tried 
>>>> this on any of the other equipment.
>>>>
>>>> Paul
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>>>>   
>>>
>>
>>
>