On 18 Jul 2001, Prema M P wrote:
> Scenario 1:
> Node 2
> | 1480
> 1300 |
> --- Router -------------------------
> |
> | 1480
> Node 1
>
> Is Node1 be able to send pkts of size 1480 to Node2 or Router ??
Yes.
Traffic back from Router is at most 1300 bytes long, though.
> Scenario 2:
> Node 3 Node 2
> 1500 | | 1480
> | 1500 1500 |
> ------------------------------Router -------------------------
> |
> | 1300
> Node 1
>
> If node3 needs to send pkts to node 1, will Node 1 (IP layer) be able to
> receive pkts of size 1500 ??
> or If there is fragmentation, what will be the fragmented packets size??
Node1 can receive the packets unfragmented.
Additional scenario 3:
Node 3 Node 2
1500 | | 1480
| 1500 1300 |
------------------------------Router -------------------------
|
| 1500
Node 1
Now, if Node3 tries to send to Node1, Path MTU discovery happens and Node3
will only send with MTU of 1300. Or if there is fragmentation, it is done
by end nodes with fragmentation header. If Node2 wanted to communicate
with Node3 or Node1, MTU of 1480 would be used to that direction, and 1300
or 1500 back, respectively.
--
Pekka Savola "Tell me of difficulties surmounted,
Netcore Oy not those you stumble over and fall"
Systems. Networks. Security. -- Robert Jordan: A Crown of Swords
--------------------------------------------------------------------
IETF IPng Working Group Mailing List
IPng Home Page: http://playground.sun.com/ipng
FTP archive: ftp://playground.sun.com/pub/ipng
Direct all administrative requests to [EMAIL PROTECTED]
--------------------------------------------------------------------
