From: Hyunseog Ryu (r.hyunseog@ieee.org)
Date: Fri Aug 22 2008 - 15:53:16 ART
That's what I wa afraid of.
I checked our RTR A and RTR D, but RTR D doesn't have IOS to support
that feature, yet.
I will check the IOS upgrade, but I'm wondering whether somebody has any
workaround or not.
Hyun
David Prall wrote:
> You need to enable PMTUD within BGP. In 12.2SB code this can be configured
> on a per neighbor basis. In other code it is within the bgp process for all
> neighbors.
>
> David
> --
> http://dcp.dcptech.com
>
>
>
>> -----Original Message-----
>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
>> Behalf Of Hyunseog Ryu
>> Sent: Friday, August 22, 2008 1:10 PM
>> To: Cisco certification
>> Subject: BGP MTU issue ?
>>
>> Hi Guys,
>>
>> I would like to form BGP session between remote locations.
>>
>> RTR A (GigE MTU 9000 bytes) ---- (GigE MTU 9000 bytes) RTR B (GigE MTU
>> 1500 )--- (GigE MTU 1500 ) RTR C (GigE MTU 9000) --- (GigE
>> MTU 9000) RTR D
>>
>>
>> With this connection, I would like to form EBGP multihop
>> session between
>> RTR A and RTR D.
>> But when I setup, it would not come up because it uses MTU 9000 bytes
>> for BGP update packet, but the circuit between RTR B and RTR
>> C has 1500
>> MTU limitation.
>> I don't have control over those two routers.
>> Is there any way for BGP to use lower MTU for specific session only ?
>> I appreciate your help.
>> Thanks.
>>
>> Hyun
>>
>>
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