I have a question to how specific ports can be configured using jumbo frames and leaving other ports with the default mtu 1500.
We have a 4 Switches stacked, 2*ws-c3750g-12s which are our backbone switches and have 48 port 10/100 switches connected to them.
The other 2 switches in the stack are ws-c3750g-24t and these act server/storage devices connect to them. 4 ports on these switches we want to turn on Jumbo packets for the storage devices.(Netapps fas device) These 4 ports are in 1 vlan and the vlan is only on this stacked switch. The switches and MTU setting is as below.
switch 1 provision ws-c3750g-12s
switch 2 provision ws-c3750g-12s
switch 3 provision ws-c3750g-24t
switch 4 provision ws-c3750g-24t
system mtu routing 1500 http://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_example09186a008010edab.shtml
After looking through the above link I am led to believe that individual ports cannot be configured to accept Jumbo packets, as it is a sytem setting on the switch. Since all the ports in this stacked switch are gig ports this would mean all ports are configured for Jumbo packets ?
So the question is how does one change 4 spercific ports for jumbo packets and leave the other ports to receive packets of 1500.
The ports in question are
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