Hi,
we got one VLAN on a Cat3750 on that we want enable jumbo frame
support. I found this information on the Cisco website:
###############################################################################################################
Catalyst 3750/3560 Series
Catalyst 3750/3560 Series switches support an MTU of 1998 bytes for
all 10/100 interfaces. All Gigabit Ethernet interfaces support jumbo
frames up to 9000 bytes. The default MTU and jumbo frame size is 1500
bytes. You cannot change the MTU on an individual interface. You must
set the MTU globally. Reset the switch afterwards for the MTU change
to take effect.
Configure
Use the system mtu command to change the MTU for all 10/100
interfaces. This command only effects 10/100 interfaces.
3750(config)# system mtu 1546
3750(config)# exit
3750# reload
Use the system mtu jumbo command to change the MTU for all Gigabit
Ethernet interfaces. This command only effects Gigabit Ethernet
Interfaces.
3750(config)# system mtu jumbo 9000
3750(config)# exit
3750# reload
Note: Gigabit Ethernet ports are not affected by the system mtu
command; 10/100 ports are not affected by the system mtu jumbo
command. If you do not configure the system mtu jumbo command, the
setting of the system mtu command applies to all Gigabit Ethernet
interfaces.
###############################################################################################################
We got one VLAN which we will be using as out NFS/SAN VLAN. For my
understanding, we could only enable jumbo frame support global, not
for an specific interface. Am I right? Thanks for your help.
Cheers
Simon
CCIE #26323 (Sec)
_______________________________________________
For more information regarding industry leading CCIE Lab training, please visit
www.ipexpert.com
