Re: L2 Etherchannel loadbalancing based on destination ip

From: Marko Milivojevic <markom_at_ipexpert.com>
Date: Thu, 18 Nov 2010 14:24:50 +0000

Yes we can.

--
Marko Milivojevic - CCIE #18427
Senior Technical Instructor - IPexpert
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On Thu, Nov 18, 2010 at 14:24, Vibeesh S <vibselva_at_gmail.com> wrote:
> Hi Marko,
>
> Thank you for the reply,
> but my question is can we perform load balancing based on a L3 address when
> we have only a L2 etherchannel configured.
> It doesnt matter if its src-dst-ip or src-ip or dst-ip.
>
> Thanks,
> Vibs
>
>
> On Thu, Nov 18, 2010 at 6:37 PM, Marko Milivojevic <markom_at_ipexpert.com>
> wrote:
>>
>> It's platform dependent. On 3560 you can load share based on src/dst IP
>> pair:
>>
>> Cat1(config)#port-channel load-balance ?
>> B dst-ip B  B  B  Dst IP Addr
>> B dst-mac B  B  B Dst Mac Addr
>> B src-dst-ip B  Src XOR Dst IP Addr
>> B src-dst-mac B Src XOR Dst Mac Addr
>> B src-ip B  B  B  Src IP Addr
>> B src-mac B  B  B Src Mac Addr
>>
>> --
>> Marko Milivojevic - CCIE #18427
>> Senior Technical Instructor - IPexpert
>>
>> FREE CCIE training: http://bit.ly/vLecture
>>
>> Mailto: markom_at_ipexpert.com
>> Telephone: +1.810.326.1444
>> Web: http://www.ipexpert.com/
>>
>> On Thu, Nov 18, 2010 at 09:12, Vibeesh S <vibselva_at_gmail.com> wrote:
>> > Hi Garry,
>> >
>> > Thank you for the reply, I am aware of the load balancing configuration.
>> > But am not sure if the L2 etherchannel can load balance based on
>> > source/destination IP. Anways will let you know during the weekend.
>> >
>> > Thanks,
>> > Vibs
>> >
>> > On Wed, Nov 17, 2010 at 9:50 PM, garry baker <baker.garry_at_gmail.com>
>> > wrote:
>> >
>> >> from the doccd on the 3560:
>> >>
>> >> "EtherChannel balances the traffic load across the links in a channel
>> >> by
>> >> reducing part of the binary pattern formed from the addresses in the
>> >> frame
>> >> to a numerical value that selects one of the links in the channel.
>> >> EtherChannel load balancing can use MAC addresses or IP addresses,
>> >> source or
>> >> destination addresses, or both source and destination addresses. The
>> >> selected mode applies to all EtherChannels configured on the switch.
>> >> You
>> >> configure the load balancing and forwarding method by using the
>> >> *port-channel
>> >> load-balance* global configuration command."
>> >>
>> >>
>> >>
>> >> http://www.cisco.com/en/US/customer/docs/switches/lan/catalyst3560/software/release/12.2_55_se/configuration/guide/swethchl.html#wp1275731
>> >>
>> >> I take this that it will look at the frame, so if the frame has L3
>> >> stuff
>> >> then it should take it into account when it passes through the
>> >> etherchannel,
>> >> this is a global command on the 3560, so it affects all etherchannels
>> >> configured...
>> >>
>> >> if you have a couple of switches i would like to see some test results,
>> >> if
>> >> you have time to lab it up...
>> >>
>> >>
>> >> --
>> >> Garry L. Baker
>> >>
>> >> "There is no 'patch' for stupidity." - www.sqlsecurity.com
>> >>
>> >>
>> >> On Wed, Nov 17, 2010 at 10:07 AM, Vibeesh S <vibselva_at_gmail.com> wrote:
>> >>
>> >>> Hi,
>> >>>
>> >>> Are the MLS capable of performing loadbalancing based on destination
>> >>> ip
>> >>> while am having a L2 etherchannel. (Without having any L3 stuff
>> >>> configured.)
>> >>>
>> >>> Thanks,
>> >>> Vibs
>> >>>
>> >>>
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Received on Thu Nov 18 2010 - 14:24:50 ART

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