[j-nsp] Big Size Packets on DS3

[Kashif.Khawaja at Broadwing.com]

> Keep in mind that if you use the "size" parameter on the 
> juniper ping command to test what you are describing, it only 
> counts the payload, not the IP or ICMP headers, so the 
> maximum size you can ping with is your inet mtu (4470) - 28 
> bytes = 4442. So this is normal behaviour. You can see the 
> same thing on an Ethernet interface with standard inet mtu of 
> 1500, where 1472 is the largest size parameter to junipers 
> ping you will get through the link with do-not-fragment set.
> 
> /leg
>

Absolutely right. I was told when our provisioners were trying to bring the circuit up
they did not set the do-not-fragment bit. I have asked them to setup it up again so that I
can see whats going on. Will let ya guys know how it goes. Appreciate the help. Thanks
Lars!

-Kashif
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