Managing the Hub

Managing the Hub

Console Command Reference

The Late Collision Monitoring option monitors ports for excessive late collisions. If monitored ports experience excessive late collisions, these ports are disabled.

See the section on Auto-Partitioning in the chapter that provides the Product Description.

SEcure <portSHowCLear>

To control or display the hub’s security configuration, and to clear security violation indicators. The <port> parameter can be:

a twisted-pair port number only.

XCVR or XC for the AUI port.

ALL or AL for all ports

Security Configuration Parameter Definitions

The following security parameters are configurable on each of the hub’s network ports. These parameters are defined on the next two pages:

Address selection method, or authorized MAC address

Send alarm when intruder detected

Eavesdrop prevention

An additional parameter, “Disable port when intruder detected”, is set automatically by your selection of the address selection method. See “Auto Port Disable” in Appendix F, “Security Information,” on this parameter.

Address selection method, or authorized MAC address. This is the method by which the hub automatically learns the address of the device that is authorized to use the port, or you can enter a specific address. The following methods are configurable:

Learn Continuouslyprovides minimum port security (default secu- rity state). The hub learns the address of the first device attached to the port and makes it the authorized MAC address. If a different device is later attached to the port, the new address is learned and becomes the autho- rized address. Each new device attached becomes the authorized device. You can be informed of any such changes by setting the Send Alarm parameter to YES. In that case, when a new address is detected, the

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HP J3188A manual SEcure portSHowCLear, Security Configuration Parameter Definitions