Re: Fragment : 2nd Ques

Hi Happy,

This is interesting I didn't know this.. Can you please post the scenario
and the tests that lead you to this conclusion?

I am positive one of the experts will help.

Regards,

On Tue, Sep 21, 2010 at 8:33 AM, Happy Singh <happynetworkingsingh_at_gmail.com
> wrote:

> Hi
>
> Again ; trying to understand Fragmentation .
> Lets have following scenario :
>
> R1 --------R2 ------------R3 ----R4
>
> R1-R2 MTU = 3300 bytes
> R2-R3 MTU = 1300 bytes
> R3-R4 MTU = 3300 bytes
>
>
> Let pkt of 12000 byte came in R1 . It fragments and send on R1-R2 link
>
> R2 must fragment each of these into smaller fragments to send them over
> the
> 1,300-byte MTU link. Note that the R3 does *not* reassemble the
> 1,300-byte fragments, even though next link has an MTU of 3,300
> bytes.WHYYYYYY ????
>
> My question is that why is re-assembly done by end router ? Reasons ?
>
> Thnx
> Happy
>
>
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-- 
KJ
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