Re: Jumbo Frames

We are using Jumbo frames on our 10GE iSCSI VLANs. The only routed traffic
into those VLANs is ICMP for troubleshooting, but nothing else to avoid issues
with fragmentation.

Our Oracle DB and SAP admins captured some statistics before the change.
They reported that the DB response time has increased a lot and they said
the overall SAP performance increased by 40%.

Most documents we read about Jumbo frames were very vague and said that
the advantages would just depend on the traffic patterns. That's why we enabled
it during a bigger maintenance window and just gave it a try.

Best regards,

Jochen

On Tue, Jan 8, 2013 at 4:35 PM, marc abel <marcabel_at_gmail.com> wrote:
> Is anyone currently using Jumbo frames in their environments? If so what
> kinds of performance increases (if any) have you seen and what sort of pain
> points have you experienced.
>
> Are you running it in a small segment of your network or across the entire
> environment? Are you running it in your data centers, your campuses, or
> both?
>
> I've been doing some reading on the topic and opinions seem all over the
> place on this. Personally I have set it up in the lab and it did seem to be
> somewhat beneficial, but then I think about taking it to my environment and
> i wonder what happens when that flood of 9K packets hits the edge ASA and
> has to be fragmented and shipped over a VPN. Does the ASA spike it's CPU
> and roll over? What happens if you are carrying VOIP traffic on the same
> links?
>
> All thoughts and opinions appreciated.
> --
> Marc Abel
> CCIE #35470
> (Routing and Switching)
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Wed Jan 09 2013 - 08:26:42 ART