Odd throughput "simple" test

[cisco_lad2004]

Hi all

I am testing throughput on following topology.

TestBox2-7600-7600-4500-3400-TestBox1

TestBox1 emulate a CE connecting thru L2 which is terminated at 7600.

My test is basic, I send packets and watch them coming back, making sure the QOS policing is working as it should (25Mb allowed, any excess droped).

the capacity end to end is 1Gb.

the odd problem is that I can only pump 5Mb and no more, anything after that start showing packets loss.

what I checked so far:

1-removed all policing on path.

2-checked all interfaces on path for errors or packets drops.

3-ensured interfaces are 1Gb.

4-changed packets size from 64 to 1500 and tested with random sizes.

to recap. from 1Mb to 5Mb all works great, confirmed by tester as well as load on interfaces where I can see input = output. however when I go over 5Mb it goes pear shape.

any pointers or suggestions would be great help as I think I have checked all what needs to be checked on this simple set up.

TIA

Sam

[cisco_lad2004]

Hi Ilya

I am pretty sure it is caused by CSCee10005.

so next thing will be to remove DEC and then enable ETC on same module.

Sam

[ilya.varlashkin]

Samir,

it should be possible to verify whether you're hitting that bug or something else. Since bug is due to cross-module etherchannel, try using only single link for the test.