LINK AGGREAGATION AND PING ISSUES
Posted on 2005-05-06
I'm currently bench testing 2 alcatel 7800 switches. I am testing Link aggregation between the 2 using 2 Gigabit Firbe conections, and 2 X 100MB Ethernet Cable conections.
that gives 4 conections aggregated to give (i think) 2 Gigabit + 200 Mbit links. (around 2.2 gig of bandwidth??)
i thought id test this out so i pinged the second switch from a laptop conected to the first switch.
i entered ping -l 65500 10.2.2.10 -t
65500 bytes is the MAX amount of bytes i can ping.
i just used start/run/ and opened it approx 20 times, giving me a lot of Pings going over this Aggregated link i created.
i would assume that bandwidth of 2.2 gigabit would be sufficient for these pings to go through without any trouble. i used an online calculator and in megabytes 65500 = 0.06247 MB. i know its not accurate but i then used the windows calculator X 20 and got 1.2494MB, so just over 1 MB. (is this correct?)
i would assume that i would have no problems with there being such high bandwidth, but a lot of the pings in many of the windows were timming out, giving very slow response times of 100 MS.
can anyone explain this to me?
I'm sure what i've written might not be totally clear so if you need me to explain something then just ask.
I'd like to know why these small pints were timing out over such Large Bandwidth??