[c-nsp] ip tcp adjust-mss

[Methsri Wickramarathna]

Thanks Pete,

If not a problem can any one look in to following mturoute taken ??? :)

E:\>mturoute -t www.ubnt.com
mturoute to www.ubnt.com, 30 hops max, variable sized packets
* ICMP Fragmentation is not permitted. *
* Speed optimization is enabled. *
* Maximum payload is 10000 bytes. *
 1  +-  host: 116.12.78.1  max: 1500 bytes
 2  +-  host: 203.143.0.36  max: 1500 bytes
 3  +-  host: 203.143.1.25  max: 1500 bytes
 4  +-  host: 125.22.195.249  max: 1500 bytes
 5  +-  host: 123.62.129.194  max: 1500 bytes
 6  +-  host: 4.26.0.89  max: 1500 bytes
 7  +-  host: 4.69.144.62  max: 1500 bytes
 8  +-  host: 4.69.137.33  max: 1500 bytes
 9  +-  host: 4.69.132.82  max: 1500 bytes
10  +-  host: 4.69.134.130  max: 1500 bytes
11  +-  host: 4.69.149.13  max: 1500 bytes
12  ...-.-  host: 4.28.125.110 not responding
13  .-.-  host: 72.21.220.141 not responding
14  .-.-  host: 205.251.245.63 not responding
15  No response from traceroute for this TTL.  Tried 3 times
16  No response from traceroute for this TTL.  Tried 3 times
17  No response from traceroute for this TTL.  Tried 3 times
18  .-+++++++++.-++ * host: 216.182.224.79  max: 1496 bytes*
19  No response from traceroute for this TTL.  Tried 3 times
20  No response from traceroute for this TTL.  Tried 3 times
21  No response from traceroute for this TTL.  Tried 3 times
22  No response from traceroute for this TTL.  Tried 3 times
23  No response from traceroute for this TTL.  Tried 3 times
24  ++--+---+++-+++-  host: 23.21.93.68  max: 1500 bytes

There's an MTU issue @ the host 216.182.224.79 and simply this site is not
loading. The Interesting part is I'm using a /28 block belongs
116.12.78.0/28 , My IP is 116.12.78.11 and above site is working properly
there's an another IP 116.12.78.6 for that IP this site is not working :(
:( . When I asked this about from my UPStream provider they are either
willingly or unwillingly not responding properly. They are asking me to
configure my edge router with the command " *ip tcp adjust-mss *". *Any
idea regarding which end having this PMTU issue ????*


On Mon, Nov 4, 2013 at 9:04 PM, Pete Lumbis <alumbis at gmail.com> wrote:

> On ASR1k the MSS adjustment is done on the QFP (the ESP or "in hardware").
> Again, this behavior varies from platform to platform.
>
>
> On Sun, Nov 3, 2013 at 11:47 PM, Methsri Wickramarathna <
> mmethw2003 at gmail.com> wrote:
>
>> Thanks Pete!!!
>>
>> We are using ASR 1001 series , can configure but I want to make sure
>> before doing it
>>
>>
>> On Sat, Nov 2, 2013 at 1:53 AM, Pete Lumbis <alumbis at gmail.com> wrote:
>>
>>> Most platforms can't do this in hardware and have to punt the SYN and/or
>>> SYN/ACK packets. Use caution at scale
>>>
>>>
>>> On Fri, Nov 1, 2013 at 7:15 AM, Methsri Wickramarathna <
>>> mmethw2003 at gmail.com> wrote:
>>>
>>>> Hi all ,
>>>> Is it wise to use ip tcp adjust-mss on a ISP gateway router ???
>>>>
>>>> --
>>>> --
>>>> ________´$$$$`_____________________________,,,_
>>>> _______´$$$$$$$`_________________________´$$$`
>>>> ________`$$$$$$$`______,,________,,_______´$$$$´
>>>> _________`$$$$$$$`____´$$`_____´$$`____´$$$$$´
>>>> __________`$$$$$$$`_´$$$$$`_´$$$$$`__´$$$$$$$´
>>>> ___________`$$$$$$$_$$$$$$$_$$$$$$$_´$$$$$$$´_
>>>> ____________`$$$$$$_$$$$$$$_$$$$$$$`´$$$$$$´_
>>>> ___,,,,,,______`$$$$$$_$$$$$$$_$$$$$$$_$$$$$$´_
>>>> _´$$$$$`____`$$$$$$_$$$$$$$_$$$$$$$_$$$$$$´_
>>>> ´$$$$$$$$$`´$$$$$$$_$$$$$$$_$$$$$$$_$$$$$´_
>>>> ´$$$$$$$$$$$$$$$$$$_$$$$$$$_$$$$$$$_$$$$$´_
>>>> ___`$$$$$$$$$$$$$$$_$$$$$$$_$$$$$$_$$$$$$´_
>>>> ______`$$$$$$$$$$$$$_$$$$$__$$_$$$$$$_$$´_
>>>> _______`$$$$$$$$$$$$,___,$$$$,_____,$$$$$´_
>>>> _________`$$$$$$$$$$$$$$$$$$$$$$$$$$$$$´_
>>>> __________`$$$$$$$$$$$$$$$$$$$$$$$$$$$´_
>>>> ____________`$$$$$$$$$$$$$$$$$$$$$$$$´_
>>>> _______________`$$$$$$$$$$$$$$$$$$$$´_
>>>>
>>>> ~~( ŊëŌ )~~
>>>> _______________________________________________
>>>> cisco-nsp mailing list  cisco-nsp at puck.nether.net
>>>> https://puck.nether.net/mailman/listinfo/cisco-nsp
>>>> archive at http://puck.nether.net/pipermail/cisco-nsp/
>>>
>>>
>>>
>>
>>
>> --
>> --
>> ________´$$$$`_____________________________,,,_
>> _______´$$$$$$$`_________________________´$$$`
>> ________`$$$$$$$`______,,________,,_______´$$$$´
>> _________`$$$$$$$`____´$$`_____´$$`____´$$$$$´
>> __________`$$$$$$$`_´$$$$$`_´$$$$$`__´$$$$$$$´
>> ___________`$$$$$$$_$$$$$$$_$$$$$$$_´$$$$$$$´_
>> ____________`$$$$$$_$$$$$$$_$$$$$$$`´$$$$$$´_
>> ___,,,,,,______`$$$$$$_$$$$$$$_$$$$$$$_$$$$$$´_
>> _´$$$$$`____`$$$$$$_$$$$$$$_$$$$$$$_$$$$$$´_
>> ´$$$$$$$$$`´$$$$$$$_$$$$$$$_$$$$$$$_$$$$$´_
>> ´$$$$$$$$$$$$$$$$$$_$$$$$$$_$$$$$$$_$$$$$´_
>> ___`$$$$$$$$$$$$$$$_$$$$$$$_$$$$$$_$$$$$$´_
>> ______`$$$$$$$$$$$$$_$$$$$__$$_$$$$$$_$$´_
>> _______`$$$$$$$$$$$$,___,$$$$,_____,$$$$$´_
>> _________`$$$$$$$$$$$$$$$$$$$$$$$$$$$$$´_
>> __________`$$$$$$$$$$$$$$$$$$$$$$$$$$$´_
>> ____________`$$$$$$$$$$$$$$$$$$$$$$$$´_
>> _______________`$$$$$$$$$$$$$$$$$$$$´_
>>
>> ~~( ŊëŌ )~~
>>
>
>


-- 
-- 
________´$$$$`_____________________________,,,_
_______´$$$$$$$`_________________________´$$$`
________`$$$$$$$`______,,________,,_______´$$$$´
_________`$$$$$$$`____´$$`_____´$$`____´$$$$$´
__________`$$$$$$$`_´$$$$$`_´$$$$$`__´$$$$$$$´
___________`$$$$$$$_$$$$$$$_$$$$$$$_´$$$$$$$´_
____________`$$$$$$_$$$$$$$_$$$$$$$`´$$$$$$´_
___,,,,,,______`$$$$$$_$$$$$$$_$$$$$$$_$$$$$$´_
_´$$$$$`____`$$$$$$_$$$$$$$_$$$$$$$_$$$$$$´_
´$$$$$$$$$`´$$$$$$$_$$$$$$$_$$$$$$$_$$$$$´_
´$$$$$$$$$$$$$$$$$$_$$$$$$$_$$$$$$$_$$$$$´_
___`$$$$$$$$$$$$$$$_$$$$$$$_$$$$$$_$$$$$$´_
______`$$$$$$$$$$$$$_$$$$$__$$_$$$$$$_$$´_
_______`$$$$$$$$$$$$,___,$$$$,_____,$$$$$´_
_________`$$$$$$$$$$$$$$$$$$$$$$$$$$$$$´_
__________`$$$$$$$$$$$$$$$$$$$$$$$$$$$´_
____________`$$$$$$$$$$$$$$$$$$$$$$$$´_
_______________`$$$$$$$$$$$$$$$$$$$$´_

~~( ŊëŌ )~~