How to change MTU size on tachyon FC (11.11)

[Pras Nar]

I would like to change the MTU size of
my FC HBA to 2k. How do I do that ?
I think, I have to use fcmsutil. But can
someone give the exact options ?

[steven Burgess_2]

Hi

You don't set the mtu with fcmsutil. You do this with lanadmin

Display with

lanadmin -m

Ammend with

lanadmin -M

HTH

Steve

[Pras Nar]

May be, I was not clear in my question earlier. I want to change the Max Frame size which is shown as 960 in the following output.

# fcmsutil /dev/td0

Vendor ID is = 0x00103c
Device ID is = 0x001028
TL Chip Revision No is = 2.3
PCI Sub-system Vendor ID is = 0x00103c
PCI Sub-system ID is = 0x000006
Topology = PTTOPT_FABRIC
Local N_Port_id is = 0x670000
N_Port Node World Wide Name = 0x50060b0000087937
N_Port Port World Wide Name = 0x50060b0000087936
Driver state = ONLINE
Hardware Path is = 0/4/0/0
Number of Assisted IOs = 1528413
Number of Active Login Sessions = 0
Dino Present on Card = NO
Maximum Frame Size = 960
Driver Version = @(#) PATCH_11.11: libtd.a : Jun 28 2002, 11:08:35, PHSS_26799

[Norman_21]

Hello,

Steve is right.

lanadmin -M 1500 ( is the max speed for Ethernet)

Just a tought!

[Norman_21]

Hello mate,

Accoring to fcmsutil man pages,it can not be used to change the MTU size or even Max Frame size. If came across a solution, please post your results back here.
I would check the Technical documents for the FC HBA.

Good luck.

[Eugeny Brychkov]

It's not possible. At least with current driver. Maybe next releases will support it
Eugeny