Amer Networks SS3GR24i - Manual (Page 24)

SS3GR24i/SS3GR48i Layer3 Stackable Gigabit Switch User’s Guide
port status change. The switch generates traps and sends them to
the trap recipient (or network manager).
Trap recipients are special users of the network who are given
certain rights and access in overseeing the maintenance of the
network. Trap recipients will receive traps sent from the switch;
they can then take immediate actions to avoid further failure or
breakdown of the network.
You can also specify which network managers may receive traps
from the switch by entering a list of the IP addresses of authorized
network managers. Up to four trap recipient IP addresses, and four
corresponding SNMP community strings can be entered.
SNMP community strings function like passwords in that the
community string entered for a given IP address must be used in
the management station software, or a trap will be sent.
The following are trap types the switch can send to a trap
recipient:
• Cold Start – This trap signifies that the switch has been
powered up and initialized such that software settings are
reconfigured and hardware systems are rebooted. A cold
start is different from a factory reset in that configuration
settings saved to non-volatile RAM are used to reconfigure
the switch.
• Warm Start – This trap signifies that the switch has been
rebooted, however the POST (Power On Self-Test) is skipped.
• Authentication Failure – This trap signifies that someone
has tried to logon to the switch using an invalid SNMP
community string. The switch automatically stores the
source IP address of the unauthorized user.
• Topology Change – A Topology Change trap is sent by the
switch when any of its configured ports transition from the
Learning state to the Forwarding state, or from the
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