HP PROCURVE 3400CL-24G Manuel d'utilisateur télécharger pdf (Page 105)

Enhancements

Release M.10.21 Enhancements

Software fixes only, no new enhancements.

Release M.10.22 Enhancements

Release M.10.22 includes the following enhancement:

■ Enhancement (PR_1000376406) — Loop Protection feature additions, including packet

authentication, loop detected trap, and receiver port configuration.

Configuring Loop Protection

You can use BPDU protection for systems that have spanning tree enabled (See “Spanning Tree BPDU

Protection” on page 91), however, the BPDU protection feature cannot detect the formation of loops

when an unmanaged device on the network drops spanning tree packets. To protect against the

formation of loops in these cases, you can enable the Loop Protection feature, which provides

protection by transmitting loop protocol packets out ports on which loop protection has been

enabled. When the switch sends out a loop protocol packet and then receives the same packet on a

port that has send-disable configured, it shuts down the port from which the packet was sent.

You can configure the disable-timer parameter for the amount of time you want the port to remain

disabled (0 to 604800 seconds). If you configure a value of zero, the port will not be re-enabled.

To enable loop protection, enter this command:

ProCurve(config)# loop-protect <port-list>

Syntax: [no] loop-protect <port-list> [receiver-action <send-disable | no-disable> |]

[transmit-interval <1-10> ] | [disable-timer <0-604800>] |

[trap <loop-detected>]

Allows you to configure per-port loop protection on the switch.

[receiver-action <send-disable | no-disable>]

Sets the action to be taken when a loop is detected on the port. The port that received

the loop protection packet determines what action is taken. If send-disable is

configured, the port that transmitted the packet is disabled. If no-disable is

configured, the port is not disabled.

Default: send-disable

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HP PROCURVE 3400CL-24G Manuel d'utilisateur Page 105