Cisco 2970 - Catalyst Switch Bedienungsanleitung PDF herunterladen (Seite 13)

Cisco Catalyst 3750 and 2970 Switches: Using Switches with a PS Series Group

Disabling Unicast Storm Control

This section describes how to disable unicast storm control on Cisco Catalyst 3750 and 2970

switches.

The following example shows how to disable unicast storm control on Gigabit Ethernet interface

0/15 on switch 1 and verify the configuration:

Switch> enable

Switch# configure terminal

Switch(config)# interface gigabitethernet1/0/15

Switch(config-if)# no storm-control unicast level

Switch(config-if)# exit

Switch(config)# exit

Switch# copy running-config startup-config

To view or confirm storm control status on a port, use the following command.

Switch# show storm-control gigabitethernet1/0/15 unicast

Interface Filter State Level Current

--------- ------------- ------ -------

Gi2/0/15 inactive 100.00% N/A

For more information on configuring port-based traffic control on Catalyst switches, see:

http://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter

09186a008021272b.html

Configuring Jumbo Frames

On Cisco Catalyst 3750 and 2970 switches, you cannot set the MTU size for an individual

interface. Instead, you must set it for all Gigabit Ethernet interfaces on the switch, or for all

interfaces in a VLAN. When you change the MTU size, you must reset the switch before the new

configuration takes effect. If you enter a value that is outside the allowed range for the specific

type of interface, the value is not accepted.

Use the following commands to configure Jumbo Frames, which sets the maximum packet size to

9000 bytes, on Cisco Catalyst 3750 and 2970 switches:

Switch> enable

Switch# config t

Switch(config)# system mtu jumbo 9000

Switch(config)# exit

Switch# copy running-config startup-config

Switch# reload

The following example shows the output when you try to set Gigabit Ethernet interfaces to an out-

of-range number:

Switch(config)# system mtu jumbo 25000

% Invalid input detected at '^' marker.

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Cisco 2970 - Catalyst Switch Bedienungsanleitung Seite 13