How to configure SW 2960G Ethernetchannel?

[pabelkid86]

I want to configure Ethernetchannel on one sw2960G:

Scenario as :

         Port gigabit 1,2 connect with port gigabit 1,2 of my device A

         Port gigabit 4,5 connect with pot gigabit 1,2 of my device B

         Device A connected device B

         Sum rate of port 1,2 aggregated and push it in port 3

         Sum rate of port 4,5 aggregated and push it in port 6

because i want to test sum rate of port 1,2 in my device, but i only have one sw 2960G

So, i want to know that with scenario, can i test sum rate of port 1,2 on my device?

If i can, how will i configure my sw?

Thanks!

[paolo bevilacqua]

What and why do you want to test?

The product performs according to published specification - linerate, non-blocking, and there isn't really nothing to test.

[pabelkid86]

This is my diagram for this test. I want to test total speed of two port on my device.

ps: I only have one sw 2960

[glen.grant]

   On the ports you want to use shut them down then  configure on the ports "channel-group X mode desirable non-silent" .

Not sure what you are going to test .  For a given ip conversation your thruput will never be more than 1 gig .

[pabelkid86]

Thanks for your support,

But i know that my tester won't get thruput more than 1Gig : Because my thruput for port 1+2 =600 ( on my device)  and port 3 (on SW) = 1Gig

I think you don't understand my question, so i explain more about my quéstion:

As you see on my téster, i have two port Gig (port independence to each other).

Port 1(tester) connect to port 3 (SW)

Port 2(tester) connect to port 6 (SW)

.....(As diagram)

When i ping from port 1 to port 2 on  tester: ICMP from port 1(tester) go throught port 3 (SW) -->port 1-2 (SW) --->my device A ---> deviceB ---> p
ort 4-5(sw)---> port 6 (SW) to port 2 (tester).

IMPORTANT : Because i only have one sw 2960

I don't know that with sw 2960 i can split port as above.

and how must i config sw ?

Thanks

[Mathias Garcia]

Im not sure if I understand you correctly. But you cant just sum 2 links in an etherchannel together.

Etherchannel load balances by an algorithm that on a 2960 (I believe) is based on src mac.

So if you have traffic going from 1 mac to 1 other mac, all traffic between those 2 nodes will always use the same port/link.

It will never use both.

The only way to use more than 1 link would be to use more than 1 mac or 1 ip.

Here is a link on how to change the load blancing algorithm.

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_25_fx/configuration/guide/swethchl.html#wp1140955

More advanced cisco switches can load balance on source-destination port. (L4) But this is not supported by the 2960.