Question : Jumbo frame configuration is saved where?

The steps to enable jumbor frames on a 3750:
3750(config)# system mtu jumbo 9000
3750(config)# exit
3750# reload

Switch# show system mtu
System MTU size is 1546 bytes
System Jumbo MTU size is 9000 bytes

No wr mem to save the config?

Is this setting stored in flash like the vlan.dat?

Answer : Jumbo frame configuration is saved where?

I looked the command up in the command lookup tool (requires Cisco CCO login)

http://tools.cisco.com/Support/CLILookup/cltSearchAction.do

Else see attachment