3Com 3500 manual Ethernet monitoring mode

222CHAPTER 7: ETHERNET PORTS

ethernet monitoring mode

3500

✓9000

9400

✓3900

9300

Enables or disables port monitoring on 10/100 Mbps Ethernet ports on the switch.

Valid Minimum Abbreviation

e m m

Important Considerations

■You can use this command to configure the same setting on multiple ports simultaneously. When you specify multiple port numbers, the system prompts you to choose the setting and then applies it to all of the ports.

■You can determine when a monitored port is in error and has been disabled by these port statistics:

■The status value shown in the ethernet monitoring summary display reports partitioned.

■The portState value shown in the ethernet summary and ethernet detail displays reports partitioned.

■The linkStatus value shown in the ethernet summary and ethernet detail displays reports disabled.

When the monitoring feature reenables the port, port statistics resume normal values.

■The Ethernet monitoring feature in enabled by default, and performs these functions:

1Monitors 10/100Mbps Ethernet ports for excessive collisions, multiple collisions, late collisions, runts, and FCS errors

2Compares these error counters against user-defined thresholds

3Disables a port that reaches an error threshold

4Reports the reason that a port is disabled to the Administration Console, MIB databases, and SNMP traps

5Reenables the port after an initial backoff time interval

6Continues monitoring