[j-nsp] 802.3ad Question

[Mark Tinka]

On Thursday 14 January 2010 12:45:01 pm alexi wrote:

> Hello Mark:

Hi Alex.

Sorry for the late response, been rather backed up here :-).

> in the example you mention you said that your bundle is
>  using 3xGE and you have a pretty fair load balance 
1:1:1...

Not quite - what I did say was:

	"We're aggregating 3x Gig-E links between both devices, and 
	 it's working fairly well. Traffic distribution from the 
       	 M7i to the 6500 is 1:1:1, while traffic
	 distribution from the 6500 to the M7i is 1:1:0.7 (but this
         direction is governed by other Layer 3 devices
         upstream of the 6500)."

> do you know if there is any requirement about having pair
>  numbers or power of 2 amount of links in a bundle to get
>  a good load balance ?

I'm not familiar with any such requirement, but if the link 
you posted from Cisco's web site is anything to go by, it 
may make a bit of sense re: what we're seeing in one of the 
directions of traffic in our Cisco<=>Juniper LAG.

We do have another Cisco<=>Cisco LAG between two 7600's (one 
ours, one our upstreams'), and that's 1:1. But that is 2x 
1Gbps links in the LAG.

I could add a 4th link to the 6500<=>M7i LAG, but I'm out of 
ports on the M7i. It's really small, sometimes :-).

Cheers,

Mark.
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