[c-nsp] ip tcp mss on sup720

Dale Shaw dale.shaw+cisco-nsp at gmail.com
Mon May 18 22:18:17 EDT 2009

Hi Javier,

The command reference indicates that the "ip tcp mss" global command
is applicable only to TCP sessions terminating on or originating from
the local device.

The "ip tcp adjust-mss" interface command was integrated in
12.2(33)SXH. I've confirmed that I don't see it in 12.2(18)SXF5. Are
you in a position to upgrade? If not, I assume you are out of luck and
will need to look for an alternative option.


On Tue, May 19, 2009 at 11:43 AM, Javier Liendo <javier at liendo.net> wrote:
> hi ibrahim,
> the issue is that on a 6500 with sup720 AFAIK there is no adjust-mss
> under the interface...only global...
> best regards,
> javier
> On Mon, May 18, 2009 at 8:17 PM, Ibrahim Abo Zaid
> <ibrahim.abozaid at gmail.com> wrote:
>> Hi Javier
>> if you configure it under interface , it will affect transit traffic
>> and i think global will affect locally orginated or terminated traffic and
>> you won't need this
>> best regards
>> --Ibrahim
>> On Tue, May 19, 2009 at 3:42 AM, Javier Liendo <javier at liendo.net> wrote:
>>> hi,
>>> on a cisco router if i want to adjust the tcp MSS from traffic flowing
>>> *through* it, i can use the "ip tcp adjust-mss" under the *interface*
>>> in question...
>>> in case of a 6500 with a sup720 i have the "ip tcp mss" *global*
>>> configuration command...will this command modify the MSS from the
>>> traffic flowing *through* it or only from traffic
>>> originating/terminating on it? or both?
>>> any help/pointers/experiences will be greatly appreciated...
>>> regards,
>>> javier

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