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How to enable Jumbo Frames on a HP ProCurve Switch.
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How to enable Jumbo Frames on a HP ProCurve Switch. 12 October, 2009
HP, ProCurve
30
When configuring an iSCSI network, don’t forget to enable the Jumbo Frames on you physical switches. Follow these steps to enable the Jumbo Frames on a specific VLAN on a HP ProCurve switch: 1. Login to your switch. 2. After login type: # config 3. You will enter the config mode, type: (config)# show vlans to show the VLAN configuration. 4. To enable Jumbo Frames on the VLAN type: (config)# vlan jumbo 5. Check if the setting applied successfully by typing: (config)# show vlans again. The Jumbo column for the specific VLAN in the output should change to Yes.
6. Save your changes:(config)# write memory 7. Logout from the switch. Tested on a HP ProCurve 2900-24G switch. Cheers! – Marek Be Sociable, Share!
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30 COMMENTS Rich Morgan says: 29 MAY, 2012 AT 23:20
SUBSCRIBE Thanks for your notes for configuring Jumbo Frames Email Address
This also worked on an HP Procurve 5406zl switch
SUBSCRIBE
Regards Rich M REPLY
Marek.Z says: 30 MAY, 2012 AT 13:11
Great! Thanks! REPLY
Peter says: 7 AUGUST, 2012 AT 16:00
Are there any consequences to enabling jumbo frames on procurve 2510g-48 switches? COuld this cause issues on my network etc?? REPLY
Marek.Z says: 7 AUGUST, 2012 AT 16:10
Hi Peter, Well, it depends. Jumbo frames are usually used in storage networks. It’s is not recommended to mix the regular network traffic with storage traffic. Cheers! REPLY
Nathan says: 7 SEPTEMBER, 2012 AT 10:38
There can always be consequences
jumbo packets save CPU time on your devices and are a little
more efficient on network bandwidth due to the reduced header information. You fit up to 6 times more data (on a standard jumbo packet) vs a regular packet. The down side is that your networking equipment (to your border ideally) should support jumbo packets. As Marek said, jumbo packets are generally used on iSCSI SAN networks to reduce the processing overhead given the high volume of packets that flow across those networks, however, you can give your production network a slight performance improvement if your equipment (and network cards) support it. Generally it’s not enough to worry about for your normal network environment though. REPLY
Garrett says: 6 SEPTEMBER, 2012 AT 19:32
Thanks for this Marek, it helped resolve a storage issue we had on our E3800-24. The default VLAN indicates Jumbo frames are on when in fact the MTU is correct but Jumbo Franmes was actually disabled. I used your post show this and change the MTU on the storage VLAN. Awesome! REPLY
Manju says: 7 AUGUST, 2013 AT 08:29
Thanks.. It worked for me.. REPLY
Nigel says: 2 OCTOBER, 2013 AT 12:06
Can you do this to a live environment without causing issues to iscsi connections? REPLY
Marek.Z says: 2 OCTOBER, 2013 AT 12:15
Hi Nigel, If I recall correctly, yes. But there could be changes in the new software since this is quite old blog. I suggest you consult the manual or ask your HP representative. Cheers! REPLY
Nigel says: 3 OCTOBER, 2013 AT 13:44
Thanks for the quick reply. We have two running in a cloud environment and we’re migrating off the current SAN and need to make changes to config but can’t find anything in the manual. I don’t want to break any VMs in the process. Will see if I can get anything from tech support. REPLY
Marek.Z says: 3 OCTOBER, 2013 AT 14:40
No problem Nigel, Just one thing I forgot to mention. When you migrate to jumbo frames make sure you configure the whole stack for JFs otherwise you can get some performance issues. I suggest you enable JFs on non-production hours and test the performance. Cheers! REPLY
vimukthi bandara (@vtbfit) says: 12 MARCH, 2014 AT 09:43
is jumbo frame enable by default ? REPLY
Marek.Z says: 12 MARCH, 2014 AT 10:18
No, Jumbo frames are disabled by default. Cheers! REPLY
leenschaap says: 7 FEBRUARY, 2015 AT 20:50
Why jumbo command is not accepted on a procurve 2650 J4899A…Is there a other commando what do the same? REPLY
Marek
says:
7 FEBRUARY, 2015 AT 22:11
I have no idea. Is your firmware up to date? REPLY
Nald says: 25 JUNE, 2015 AT 04:56
Hi Sir Is there will be a problem if the hp procurve 2920 10/100/1000 is set in a jumbo frame and the other switches is hp procurve 2520 10/100 is set in jumbo frame? thanks REPLY
Marek
says:
25 JUNE, 2015 AT 12:59
Hi, It depends. If you configure for example iSCSI traffic for your ESXi hosts then you have to configure the whole stack to use jumbo frames. In some switch types you can set it up for the VLAN only. Hope this helps. Cheers! REPLY
Marek P. says: 3 AUGUST, 2015 AT 14:51
Can any one confirm if jumbo frame can be set on only one VLAN (not the whole switch) on HP ProCurve 2510g-48 switch? REPLY
Marek
says:
3 AUGUST, 2015 AT 14:58
Hi, You can test this when you are in the vlan config mode. If there is a command to enable jumbo frames there, you should be able to set the jumbo frames per vlan. Otherwise this will be a global switch command if I am not mistaken. Hope this helps. Cheers! REPLY
Marek P. says: 3 AUGUST, 2015 AT 17:09
Good stuff Marek, I just tested on ProCurve Switch 2510G-48 (J9280A) and I was able to set jumbo frame on one VLAN only. Thank you for your help! ( Dziekuje
)
REPLY
Marek
says:
3 AUGUST, 2015 AT 17:23
Great! Thanks for sharing! Dzieki! REPLY
Andy says: 6 NOVEMBER, 2015 AT 21:17
If I set all of my ports to Jumbo frames, do regular frames pass through as normal? I have 3 48-port HP2810 + 1 24-port HP2810 stacked. I can definitely see setting the iSCSI vLAN to Jumbo, but what about the rest of the network? If I set all ports to support jumbo what happens to all the hardware? It’s really weird. I had a power failure recently, and I think it disabled Jumbo’s on my 48 port that I have my VMWare ESXi and EMC San attached to. I also had a Mac xserve in the same iSCSI vlan. When power came back I couldn’t get my Mac to connect to the iSCSI drives I had setup. Spent about 4 days trying to solve the problem. I changed the MTU in my Mac xserve to 1500 and bam, all 4 drives finally popped up on the Mac. My EMC and VMWare was running fine, both are set to Jumbo (9000). The switch however, has Jumbo disabled on all ports/vlans. Why is my VMWare still working at 9000? The whole thing is confusing the heck out of me now. It totally stumped the support company that tried to help me resolve the problem. 4 days to find one setting. Everything worked fine for 2-3 years prior to this power failure. I’m beginning to doubt the settings ever were jumbo in the switch, but it had to be the problem. The SAN is still set to 9000. The switch between them is set to 1500 still. How is the SAN talking to the Mac, which is set to 1500. REPLY
paulgrevink says: 25 MARCH, 2016 AT 09:36
Hi Marek, thank you. Time saver. Cheers, Paul REPLY
Marek
says:
26 MARCH, 2016 AT 16:00
My pleasure Paul! Cheers! REPLY
Neha says: 6 MARCH, 2017 AT 07:57
Can I set mtu less than 1400 on HP 3500 REPLY
Marek
says:
6 MARCH, 2017 AT 13:47
Probably not. Why would you want to do this? Standard ethernet frame is 1500 MTU. REPLY
Chris says: 4 APRIL, 2017 AT 11:47
Hey Marek, I’ve enabled the jumbo on one of my vlans (thanks it was a massive time saver). However its saying enabled in Telnet but its not enabled on the WebUI any ideas? I’m using the HP-2920-48G. Thanks, Chris REPLY
Marek
says:
5 APRIL, 2017 AT 23:06
Hi Chris, difficult to say. Is your firmware up to date? REPLY
CRAIG RHINEHART says: 4 OCTOBER, 2017 AT 17:18
This is great information. My HP 2920 shows “Giants Rx” errors on two ports. Since I have to set jumbo frames at the VLAN level I must determine the VLAN that incurred these errors. How do I do this? There are multiple VLANs on these two ports. REPLY
CRAIG RHINEHART says: 4 OCTOBER, 2017 AT 17:28
UPDATE for my above question: Looks like it may not matter. According to this Experts Exchange thread (https://www.experts-exchange.com/questions/27863230/how-do-I-enable-jumbo-frameson-a-HP-Procurve-2824-switch.html – it is paid content so I won’t post it directly), if you enable JF on a VLAN, then all ports affected by your setting can also receive JF on any VLAN assigned to that port. Therefore I don’t HAVE to know which VLAN caused the “Giants Rx” errors really. I already know which PORTS had the errors so I am just going to pick a VLAN (the one I believe is most likely) and enable JF on it. There will be a side effect of a few other ports being enabled for JF, I realize. If there was a way to narrow down my “Giants Rx” errors to a particular VLAN that would be ideal, so I suppose my initial question is still valid. REPLY
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