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7.0

Cisco 4 ports (1gb each) Etherchannel (lacp)  only running at 1gbps speed total

Asked by jedblack in Network Switches & Hubs

Hi all,

I got a perplexing issue....

We have  Cisco 4906 gigabit switch and a Sun Unified Storage 7310(NAS BOX)

I and trying to get link aggregation working, it seems that the aggregation fuction is working --but my total through put is only about 1gigabit

3 Servers ---> Cisco 4ports in a an ether channel ---> Sun Nas box (4 ports)
 
When I send data from just one machine, I see it running at about 1gig line speed over 1 port from the server-->cisco-->sun nas

when i send data from all 3 machines -- I see that it aggregates the data between server---> 4ports on the cisco --- 4 ports on the sun nas -- but it drops the speed down to 1gig throughout all 4 links.

The NAS box and the 3 servers are on the same module, is there a backplane bottleneck?

LACP
Policy = L2
mode = Active
Timer = short

Is there something I'm missing?
[+][-]06/02/09 07:08 PM, ID: 24533022Assisted Solution

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[+][-]06/03/09 01:56 PM, ID: 24541260Assisted Solution

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[+][-]06/08/09 10:12 AM, ID: 24574174Assisted Solution

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[+][-]09/02/09 08:06 AM, ID: 25241828Accepted Solution

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About this solution

Zone: Network Switches & Hubs
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Solution Provided By: jedblack
Participating Experts: 3
Solution Grade: A
 
[+][-]09/02/09 08:08 AM, ID: 25241855Author Comment

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