Re: Jumbo frame

For your MTU either use 1500 or 9126, there isn't much point to using
something in between. All devices along the transit path must support that
MTU for it to be effective. So for instance if you have two edge routers
with a service provider in the middle, then unless the provider also
implements jumbo frames then implementing it on your edge routers wont do
any good. As for servers still using 1500 it really wont do anything to
them. It could possibly add a tiny amount of delay to small packets if they
have to wait for larger packets to be transmitted, but I wouldn't expect
this to be an issue on a 250Mb link.

On Wed, Aug 21, 2013 at 7:50 AM, Cikekhuah <cikekhuah_at_gmail.com> wrote:

> Thanks Rati,
>
> What mtu value would you recommend on the 250mb wan interface? 9126 is
> from 1gb interface, is same advisable on this interface and how does it
> impact applications on servers using 1500mtu transiting the same link.
>
>
> Sent from my iPad
>
> On Aug 21, 2013, at 1:40 PM, Rati Berikaant Jokhadze <iinfo83_at_gmail.com>
> wrote:
>
> > If the transit devices supports jumbo frames , then it makes sense
> >
> > On 08/21/2013 04:30 PM, Cikekhuah wrote:
> >> Hello colleagues,
> >>
> >> I have a 1GB network infrastructure but would like to know the impact
> of configuring Jumbo frame support on my 250MB WAN link to my DRC site
> having Cisco 6509 switches at both locations. The link is terminated on 1GB
> interfaces but has 250MB capacity. I learnt it's advisable to configure
> 9126 mtu for 1gb but less for any value below this. Was wondering the best
> value to set for my scenario and the possible impact this could have on my
> other applications transiting this link but using 1500 mtu.
> >>
> >> Any suggestions?
> >> Thanks
> >>
> >> Sent from my iPad
> >>
> >>
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-- 
Marc Abel
CCIE #35470
(Routing and Switching)
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