MTU setting on Cisco switch

I have a Cisco 3560G switch connecting to a Cisco 3750x switch via fiber 1Gbps.
On the 3560g I can configure jumbo fames to 9000 bytes and on the 3750x I can configure jumbo frames to 9198 bytes.
Will this create a problem when on one switch it has 9000 bytes jumbo frames and the other one 9198 bytes.
Or must I configure both switches to 9000 bytes.
Please advice on this
ciscosuppAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Ashok DewanFreelancerCommented:
Yes, MTU value should be same for neighbor devices to communicate properly.

you can find the correct MTU for your configuration you must run a simple DOS Ping test. You will simply send out ping requests and progressively lower your packet size until the packet no longer needs to be fragmented. Please reference the following command.

ping www.tp-link.com -f -l xxxx

f for don't fragment the packet
l for setting buffer size
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Natty GregIn Theory (IT)Commented:
size must be the same and be supported on each end
0
ciscosuppAuthor Commented:
so can my uplinks be 9000 bytes and port for end user be  still be 1500 bytes without getting any problems
0
Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Craig BeckCommented:
Yes, the uplinks can have a larger MTU than the user ports, but it shouldn't be smaller than user ports.
0
ciscosuppAuthor Commented:
thanks
last question so basically I can turn on jumbo frames (to max value) on all my switch in the network.
All my switches are  Cisco some support only 9000 and some 9189 bytes will this not be a problem.
0
Craig BeckCommented:
If you link two switches with different MTU values, set both link interfaces to the lowest value, so if one switch only goes to 9000 set the other switch's uplink to 9000 too.

If you mismatch the MTU you'll get fragmentation problems and dropped traffic.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Switches / Hubs

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.