This post is more than 5 years old
4 Posts
0
2516
October 11th, 2010 07:00
Set Jumbo Frames effects on unsupported connections
Hello all,
I am working on improving the iSCSI performance between my Celerra and ESXi Hosts. I have a test host that I am working on to try using Jumbo Frames and teamed NICs. I have set up everything on the host end to support Jumbo Frames (MTU=9000) and on the switch for the ports between the Celerra and the host. I want to enable Jumbo Frames on the Celerra side, but I do not know how that will affect other clients connected to the Celerra. Does anyone know what the impact will be on currently connected clients that are not set up for Jumbo Frames? Thanks in advance for your help.
No Events found!
Rainer_EMC
4 Operator
•
8.6K Posts
0
October 11th, 2010 08:00
Hi,
the way Ethernet and Jumbo frames work is that ALL clients in that broadcast domain (subnet / VLAN) need to have Jumbo frames enabled.
Otherwise one host will send out 9k frames and the other expects only 1500 bytes and see’s this as an error.
Any communication between a Jumbo frame and non-Jumbo frame interface will have to go through a router
Rainer
ned1313
4 Posts
0
October 11th, 2010 08:00
Thanks. for the quick answer Rainer. Is it possible to assign an additional IP address in a separate VLAN on the same trk group on the Celerra? Or would I have to pull one of the interfaces out?
Rainer_EMC
4 Operator
•
8.6K Posts
1
October 11th, 2010 09:00
Yes, that should be possible.
In order to run multiple VLANs on one trunk you need to enable VLAN tagging on both the Celerra devices and the switch ports.
Rainer
ned1313
4 Posts
0
October 11th, 2010 09:00
Excellent. I will look into doing that. Thanks again for your help Rainer.
ARSNMJ
33 Posts
0
September 15th, 2014 18:00
Intersting to knw did you change jumbo frame?
i am having the same situation here?
Is it possible to assign an additional IP address in a separate VLAN on the same trk group on the Celerra? Or would I have to pull one of the interfaces out?
did you pull out interface or did you create additional ip address?
please share your experiance