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New Member

6506 - SUP720-3B MTU size

Due to MPLS environment on our WAN, we need to increase MTU size on the lan.

We configure 6500 to use only layer 2 interfaces (switchport activate on each interface)

Do i need to configure MTU size on each interface (i think i need to do it if i want to use this interface at layer 3) or can i configure only global MTU (system jumbomtu 9216)

Is there a command to verify jumbomtu size set on the switch ?

2 REPLIES
Blue

Re: 6506 - SUP720-3B MTU size

you can use the MTU per VLAN on the 6500.

'set vlan 10 mtu "576-18190"' (catOS)

or

'vlan 10'

'mtu "1500-18190"' (IOS)

this command sets the MTU for VLAN 10; values are from 576 to 18190.

please see the following link for more info: (IOS)

http://www.cisco.com/en/US/products/hw/switches/ps708/products_command_reference_chapter09186a00801eaeec.html#wp1011172

please see the following link for more info: (catOS)

http://www.cisco.com/en/US/products/hw/switches/ps708/products_command_reference_chapter09186a00802debd1.html#wp1027906

New Member

Re: 6506 - SUP720-3B MTU size

I don't use vlan, only L2 switch

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