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Forum Discussion
FenterSpooner
Apr 23, 2013Aspirant
Jumbo frames on RN314
Just wondering if anyone has tried changing the MTU on the eth0 interface on a RN314 (v6.0) unit? The default is 1500 but I tried bumping it up to 7000 which is where my RN1 unit is at and it completely broke my web interface to the unit when accessing from another gigabit wired connection. My built-in gig card on my system supports up to ~7k packets and works great with the RN1.
I had to connect to the RN314 using a wireless computer and then was able to change it back to 1500.
While it was reachable by ping, Raidator could not discover it.
I had to connect to the RN314 using a wireless computer and then was able to change it back to 1500.
While it was reachable by ping, Raidator could not discover it.
9 Replies
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- de_niroGuidewill test mtu setting in lab
- chirpaLuminaryShouldn't MTU range be part of the QA cycle?
- Han_SoloTutorFenterSpooner , what release version do you have on the RN314?
- FenterSpoonerAspirant6.0.4. It occurred again so I have put it back to 1500 and it seems stable.
- claykinAspirantIn V6.x much smarter to have a Jumbo Frames tick box then allow users to select frame size. Current implementation seems to indicate JF is not supported.
- StephenBGuru - Experienced User
Selecting frame sizes lower than 1500 is sometimes useful, so I'd like to see the frame size text box always active.claykin wrote: In V6.x much smarter to have a Jumbo Frames tick box then allow users to select frame size.
Having a jumbo tick box to enable > 1500 values to be entered is reasonable, as it does make it more explicit. - evan2NETGEAR ExpertHi FenterSpooner,
We connect RN314 to Switch GSM7328S,
It is ok if set MTU to 7000 on RN314 and GSM7328S,
Could you tell me your built-in gig card model? We want to duplicate the issue and find root cause, thanks! - FenterSpoonerAspirantI'm running a Realtek integrated NIC (on my Gigabyte motherboard). It seems to work initially and then the web interface will not respond after some period of time. I do not experience the same type of issue with my NV (1st gen model) or Duo v1 so there is something going on. It is completely stable (barring some of the known issues with v6.0) leaving the mtu at 1500.
I would do some tests where you are trying to backup or copy large amounts of data from a computer to a RN314 (make sure your NIC has jumbo frames enabled as it is usually disabled by default). I will perform the same test on two other machines and see if I can reproduce it. I'm using Windows 7 64-bit as my OS if that matters. - claykinAspirantSame issue here with RN102 with 6.0.5. MTU size larger than 1500 slows down transfer rate considerably (less than 15MB/s). Realtek NIC JF set to 9K. Tried 3 recent Realtek driver versions. Same result with all.
Reverted back to MTU 1500. Getting 50MB/s write.
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