Re: PPPoE

Why would packets not get fragmented ?
-Carlos

Marko Milivojevic @ 29/05/2012 11:54 -0300 dixit:
> Larger packets will be dropped. On the downstream interfaces you can use "ip tcp adjust-mss" to remedy the problem for TCP.
>
> --
> Marko Milivojevic - CCIE #18427
>
> :: This message was sent from a mobile device. I apologize for errors and brevity. ::
>
> On May 28, 2012, at 18:17, Janesha Abeydeera<janesha_abey_at_yahoo.com.au> wrote:
>
>> Hi Marc,
>>
>> by setting the mtu to 1492 ,what happens to larger packets? do they
>> get dropped?
>>
>>
>> as an alternative, could we set the df bit via route-map and
>> apply it to the interface?
>>
>>
>> Thanks,
>> Janesh
>>
>>
>> ________________________________
>> From: marc abel<marcabel_at_gmail.com>
>> To: Vincent Tay<vtay.75_at_gmail.com>
>> Cc:
>> Carlos G Mendioroz<tron_at_huapi.ba.ar>; Adam Booth<adam.booth_at_gmail.com>;
>> "Ccielab_at_groupstudy.com"<ccielab_at_groupstudy.com>
>> Sent: Tuesday, 29 May 2012
>> 6:21 AM
>> Subject: Re: PPPoE
>>
>> Interleaving is a function of fragmenting. As we
>> know we must set the MTU
>> to 1492 on PPPoE links to avoid fragmentation. Maybe
>> this is what they
>> mean, set the MTU so you don't have fragmentation?
>>
>> On Mon,
>> May 28, 2012 at 8:12 AM, Vincent Tay<vtay.75_at_gmail.com> wrote:
>>
>>> Hi,
>>>
>>> I
>> come across this question while working on a workbook. It does not have
>>> any
>> solution information so i was curious. Then, i search the web and in
>>> fact
>> see some issue with PPPoE and interleaving in some ISP forum.Being
>>>
>> practical, i want to know more so that i could use it some day.
>>>
>>> Regards
>>>
>> Vincent Tay
>>>
>>> On Mon, May 28, 2012 at 7:12 PM, Carlos G Mendioroz
>> <tron_at_huapi.ba.ar
>>>> wrote:
>>>
>>>> Would you share why do you want to do that ?
>>>>
>>>> Vincent Tay @ 27/05/2012 23:38 -0300 dixit:
>>>>
>>>> hi all, thanks.
>> how do i configure to prevent interleaving?
>>>>>
>>>>> Regards
>>>>> Vincent Tay
>>>>>
>>>>> On 27 May, 2555 BE, at 10:59 PM, Carlos G
>> Mendioroz<tron_at_huapi.ba.ar>
>>>>> wrote:
>>>>>
>>>>> Adding to what Adam said,
>> interleaving also may happen at ADSL,
>>>>>> underneath of pppoe, to distribute
>> the data over time get better
>>> protection
>>>>>> of data loss from spike
>> noise.
>>>>>>
>>>>>> I mention this because of your will to get rid of
>> interleaving.
>>>>>> Interleaving in LFI has no really bad side to it.
>> Interleaving in ADSL
>>>>>> brings latency up.
>>>>>>
>>>>>> -Carlos
>>>>>>
>>>>>>
>> Adam Booth @ 27/05/2012 10:11 -0300 dixit:
>>>>>>
>>>>>>> Hi Vincent,
>>>>>>>
>>>
>>>>>> Interleaving is a function associated with ML-PPP (typically you find
>>>
>>>>>> reference to it as LFI). You could do ML-PPPoE if you really wanted
>>> to,
>>>>>>> I
>>>>>>> guess as a way to increase bandwidth or provide access
>> resiliency.
>>>>>>>
>>>>>>> Cheers,
>>>>>>> Adam
>>>>>>>
>>>>>>> On Sun, May 27,
>> 2012 at 10:49 PM, Vincent Tay<vtay.75_at_gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>
>> Hi all,
>>>>>>>>
>>>>>>>> How do i ensure that there are no interleaving for
>> PPPoE? What does
>>> it
>>>>>>>> means and how do i configure it?I have search
>> the entire documents in
>>>>>>>> vain.
>>>>>>>>
>>>>>>>> Regards
>>>>>>>>
>>>>>>>>
>>>>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>>>>
>>>>>>>>
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>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> --
>>>>>> Carlos G Mendioroz<tron_at_huapi.ba.ar>
>> LW7 EQI Argentina
>>>>>>
>>>>>
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>>>> --
>>>> Carlos G Mendioroz<tron_at_huapi.ba.ar> LW7 EQI Argentina
>>>
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>> --
>> Marc Abel
>> CCIE #35470
>> (Routing and Switching)
>>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net