Configuration Guide User guide

FastIron Configuration Guide 575

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Monitoring MAC address movement

• Interval-history notifications are best suited for a statistical analysis of the number of MAC

address movements for a configured time interval. For example, you may want to find out how

many MAC addresses have moved in the system over a given interval or how many times a

specific MAC address has moved during that interval. However, it is not possible to get this

information for every MAC address if there are a lot of MAC addresses that moved during the

interval. Consequently, the number of MAC addresses that can have a recorded history is

limited.

NOTE

MAC address move notification does not detect MAC movements across an MCT cluster between

MCT peers. It only detects MAC movements locally within a cluster MCT peer.

Configuring the MAC address movement threshold rate

To enable notification of MAC address moves, enter the mac-movement notification threshold-rate

command at the global configuration level. This command enables a corresponding SNMP trap.

Notification is triggered when a threshold number of MAC address moves occurs within a specified

period for the same MAC address. This command sets the threshold level and the sampling

interval.

Avoid threshold rates and sampling intervals that are too small. If you choose a small threshold and

a sampling interval that is also small, an unneccessarily high number of traps could occur.

The following example enables notification of MAC address moves and sends an SNMP trap when

any MAC address moves to a different port five times in a 10-second interval.

To disable notification of MAC address moves and disable the SNMP trap, use the no form of the

command, as shown in the following example.

Syntax: [no] mac-movement notification threshold-rate <move-count> sampling-interval

The <move-count> variable indicates the number of times a MAC address can move within the

specified period until an SNMP trap is sent. It has no default value.

The <interval> variable specifies the sampling period in seconds. It has no defaut value.

Brocade(config)# mac-movement notification threshold-rate 5 sampling-interval 10

Brocade(config)# no mac-movement notification threshold-rate 5 sampling-interval