3. Permanent Static MAC address
Permanent MAC address is generated by configuration. It is beyond maximum age. Whatever changes the
ports of the switch make, the relationship of the MAC address and corresponding port will never change.
Permanent MAC address will disappear when the switch re-start.
MAC address table can appoint type of the order. You can choose "auto" and "MAC". In this table, MAC
address and its corresponding port will be displayed. If the status shows "Authentication", it means the MAC
address is static authentication and the MAC address is beyond maximum age. If the status shows "static", it
means the MAC address is permanent static MAC address and it is beyond the maximum age.
Note
•
Permanent static address can be configurable in the former static MAC address table.
•
Multicast addresses are displayed in IGMP Snooping list, here are unicast addresses.
•
Maximum age of MAC address is 300s.
Diagnosis
Port Mirroring
Port mirroring refers to copy data from the port which need to be monitored to appointed monitoring port for
analysis and monitoring. Ethernet switch supports many-for-one mirror which means messages from several
ports can be copied to a monitored port. User can appoint the direction of monitored message, such as only
monitoring of transmitted messages of appointed port. The device configures port mirroring function through
port mirroring group. Each group includes a monitored port and a group of mirror ports. Total bandwidth of
mirroring is not more than that of monitored port. It is good to monitor and manage its internal network data
when using port mirroring in a company. It is also good to locate the failure when network is cut up.
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Configuring the System
50
