User guide

Managing serial console switches 127
When you select the SNMP category for the first time, the Manage Console Switch window retrieves the
SNMP parameters from the unit. The SNMP category enables you to enter system information and
community strings, designate the management stations that can manage the serial console switch, and
retrieve SNMP traps from the serial console switch. If you select Enable SNMP, the unit responds to SNMP
requests over UDP port 161. Port 161 is the standard UDP port used to send and retrieve SNMP
messages.
NOTE: The Manage Console Switch window uses SNMP within a secure tunnel to manage console
switches. For this reason, UDP port 161 must be open on firewalls. You must expose UDP port 161 to
monitor console switches through third-party SNMP-based management software.
Up to four allowable managers can be defined, and all IP addresses are defined as blank by default. If
all four entries are left blank, all IP addresses are authorized to read and write to the serial console
switch, provided that they have the correct SNMP community strings. If any of the SNMP allowable
manager entries are not blank, then only the defined SNMP allowable managers have access.
The allowable managers setting does not affect whether the HP IP Console Viewer can view or manage
the serial console switch.