C H A P T E R 18 Configuring Port-Based Traffic Control; Disabling Storm Control; Configuring Protected Ports - Cisco 2950G 24 - Catalyst Switch Software Configuration Manual

Chapter 18 Configuring Port-Based Traffic Control

Disabling Storm Control

Beginning in privileged EXEC mode, follow these steps to disable storm control:
Command
Step 1
configure terminal
Step 2
interface interface-id
Step 3
no storm-control {broadcast |
multicast | unicast} level
Step 4 no storm-control action {shutdown |
trap}
Step 5 end
Step 6
show storm-control {broadcast |
multicast | unicast}
Step 7
copy running-config startup-config

Configuring Protected Ports

Some applications require that no traffic be forwarded between ports on the same switch so that one
neighbor does not see the traffic generated by another neighbor. In such an environment, the use of
protected ports ensures that there is no exchange of unicast, broadcast, or multicast traffic between these
ports on the switch.
Protected ports have these features:
•
•
The default is to have no protected ports defined.
You can configure protected ports on a physical interface (for example, Gigabit Ethernet 0/1) or an
EtherChannel group (for example, port-channel 5). When you enable protected ports for a port channel,
it is enabled for all ports in the port-channel group.
Both LRE interface ports and CPE device ports can be configured as protected ports. When you use a
CPE 575, the cpe protected command is not available.
When you use a CPE 585 (which has multiple Ethernet interfaces), the switchport protected command
allows devices on different ports of the same CPE 585 to exchange data locally.
In some cases, you might want to protect individual CPE device ports. You can do this with the cpe
protected command. Devices connected to different ports on the same CPE cannot exchange data
directly between each other without being forwarded by an Layer 3 device.
78-14982-01
Purpose
Enter global configuration mode.
Specify the port to configure, and enter interface configuration mode.
Disable port storm control.
Disable the specified storm control action.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
A protected port does not forward any traffic (unicast, multicast, or broadcast) to any other port that
is also a protected port. Traffic cannot be forwarded between protected ports at Layer 2; all traffic
passing between protected ports must be forwarded through a Layer 3 device.
Forwarding behavior between a protected port and a nonprotected port proceeds as usual.
Catalyst 2950 Desktop Switch Software Configuration Guide
Configuring Protected Ports
18-3