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User Manual Managed Switches
203
Control user module and that module has indicated that the limit is
exceeded. No MAC addresses can be learned on the port until it is
administratively re-opened.
MAC Count
The two columns indicate the number of currently learned MAC
addresses (forwarding as well as blocked) and the maximum number of
MAC addresses that can be learned on the port, respectively. If no user
modules are enabled on the port, the Current column will show a dash (-).
If the Limit Control user module is not enabled on the port, the Limit
column will show a dash (-).
3.12.6.3 Port Status
This page shows the MAC addresses secured by the Port Security module.
The table displayed on the page shows the following information:
MAC Address
The MAC address that is seen on this port. If no MAC addresses are
learned, a single row stating No MAC addresses attached is displayed.
VLAN ID
The VLAN ID that is seen on this port.
State
Indicates whether the corresponding MAC address is blocked or
forwarding. If blocked, it will not be allowed to transmit or receive traffic.
Time of Addition
Shows the date and time when this MAC address was first seen on the
port.
Age/Hold
If at least one user module has decided to block this MAC address, it will
stay in the blocked state until the hold time (measured in seconds)
expires. If all user modules have decided to allow this MAC address to
forward, and aging is enabled, the Port Security module will periodically
check that this MAC address still forwards traffic.
If the age period (measured in seconds) expires and no frames have
been seen, the MAC address will be removed from the MAC table.
Otherwise a new age period will begin.
If aging is disabled or a user module has decided to hold the MAC
address indefinitely, a dash (-) will be shown.
3.13 Warning/Event Settings
Since industrial Ethernet devices are often located at the endpoints of a system, these devices will
not always know what is happening elsewhere on the network. This means that an industrial Ethernet
switch that connects to these devices must provide system maintainers with real-time alarm
messages. Even when control engineers are out of the control room for an extended period of time,
they can still be informed of the status of devices almost instantaneously when exceptions occur. The
Weidmüller switch supports different approaches to warn engineers automatically, such as email and
relay output. It also allows to store the log data of events both locally and in a SYSLOG server.