Jumbo Frames per vlan / port

[c.salcedo]

Hi, 

With switches 2960X jumbo frames can be activate in all ports, but i want use this per vlan, i mean i want to use mtu 9000 (connect to SAN) per vlan.

What cisco models can use jumbo frames per vlan?

[Reza Sharifi]

Hi,

On smaller switches like 2960x, 3560, 3850, etc.. you can only enable jumbo frames globally for the entire switch.  Usually on distro/core switches like 4500, 6500, 6800, etc.. it can be done per port.

HTH

[c.salcedo]

I think is a lot of money for only connect a SAN. 

DELL MD3200i requires a switch with jumbo frames per vlan (that said support) but.... i prefer stay with mtu 1500 and regular speed than pay a core switch.

[Reza Sharifi]

Most storage vendors require you to enable jumbo frames on your switches connecting to their storage devices.

HTH

[Joseph W. Doherty]

If, on a 2960X, you enable jumbo globally, it doesn't mean all your VLANs have to actually use it, just that they all will accept a jumbo frame.  If that's unacceptable, perhaps some kind of ACL could block jumbo frames on VLANs or ports you don't want to allow.

I don't recall all what switches might limit jumbos per VLAN, per jumbo configuration.  I recall 6500s support MTU settings per interface.

[c.salcedo]

the problem with enable jumbo frames globally is with other servers in switches......they become slow.