NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
LACP and Jumbo Frames
I am running my Pioneer Pro setup using LACP from my NAS to an HP 2915-8G switch. I connect to the switch using LACP to my Mac Pro, and normal ethernet to my Mac Mini. My Ultra2 also connects using L...
When you disable LACP are you also removing the second ethernet cable?
Also, sometimes LACP's MTU is configured separately from the normal ethernet MTU in the switch. I don't know if HP does that, but Netgear switches do.
I am not disabling LACP, I am "only" turning on Jumbo Frames, ie. setting the MTU to 9000. On the NASes, and on the Mac Pro and the Mac Mini. As soon as I so this, I can still access the shares, nut I cannot get into FrontView...
KillerBob wrote:
I am not disabling LACP, I am "only" turning on Jumbo Frames, ie. setting the MTU to 9000. On the NASes, and on the Mac Pro and the Mac Mini. As soon as I so this, I can still access the shares, nut I cannot get into FrontView...
Got it
Are you seeing errors in the ProCurve logs?
I had a similar problem once, and the issue was that the max frame size for LACP wasn't inherited from the max frame size for the switch ports - it needed to be set separately. It might even be possible that ProCurve doesn't support JF with LACP.
You are right:) In the logs on the 2915 it reads "Excessive undersized/% giant packets". The switch does support Jumbo Frames, but I don't see anywhere I can enable it - I have always used the webinterface. I guess that's what the problem is...
I know this won't help to solve the actual issue, but honestly, Jumbo Frames is not going to bring any significant performance increase, even on an x86 box, it's just not worth the effort.
jak0lantash wrote:
I know this won't help to solve the actual issue, but honestly, Jumbo Frames is not going to bring any significant performance increase, even on an x86 box, it's just not worth the effort.
They are enabled on my switch, but I keep them off on my equipment unless I am testing.
When there is gain, it is related to CPU load, not the network itself. Larger packets means less frequent packet interupts and related processing, and that can sometimes improve performance. The faster the system, the less gain there is.
JF are a nuisance when you have equipment with different MTU ceilings - resulting often in fragmented packets that are either dropped, or which slow down performance.
That said, they should work in this case unless there is a restriction in the switch.
StephenB wrote:they should work in this case unless there is a restriction in the switch.
It should work, that's true. Worth the effort, I'm not sure of that ;)
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
