[c-nsp] MPLS MTU and Jumbo frames

[Ibrahim Abo Zaid]

Hi Alaerte

yes , for 2950 the maximum transported frame size can't exceed 1530
(baby-giant frame) and that is applied for some 2950 running EI images and
LRE and 2955 serieses not for starndard image

for 3350 , both Fastethernet and Giga covers ur maximim of 1548

and for PE/P routers , i believe both series covers that size for Giga
interfaces and most IOS 12.4 trains and you can test it with interface
command mpls mtu which overrides interface physical MTU


best regards
--Abo Zaid




On 4/27/08, alaerte.vidali at nsn.com <alaerte.vidali at nsn.com> wrote:
>
>  Hi Zaid,
>
> There are a mix - 7609/12410 on the P/PE, and on access (before MPLS),
> 3550 and 2950.
>
> I saw that 2950 has limitation on the maximum frame size:
>
> 2950G(config)#*system mtu ?*
>   <1500-1530>  MTU size in bytes
>
> tks,
> Alaerte
>
>
>
>  ------------------------------
> *From:* ext Ibrahim Abo Zaid [mailto:ibrahim.abozaid at gmail.com]
> *Sent:* Sunday, April 27, 2008 3:51 AM
> *To:* Vidali Alaerte (NSN - BR/Rio de Janeiro)
> *Cc:* cisco-nsp at puck.nether.net
> *Subject:* Re: [c-nsp] MPLS MTU and Jumbo frames
>
>
>  Hi Alaerte
>
> the answer depends on your hardware platform and used IOS so send us your
> cisco gear "show version"
>
>
> best regards
> --Abo Zaid
>
>
> On 4/26/08, alaerte.vidali at nsn.com <alaerte.vidali at nsn.com> wrote:
> >
> > Hi,
> >
> > Any restriction regarding enabling MPLS MTU when using ethernet frames
> > of up to 1548 bytes (data, without considering MPLS tag and Ethernet
> > headers)?
> > (besides using MPLS MTU less than or equal interface MTU)
> >
> > Tks,
> > Alaerte
> >
> > _______________________________________________
> > 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/
> >
>
>