IBM 8239 Token-Ring Stackable Hub, Setup And User Manual

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Displaying Traps on the 8239 Model 1 LCD
A small subset of the possible traps that the 8239 can generate are displayed on
the 8239 Model 1 LCD. These traps are listed in “Operational Codes” on
page 5-15.
The trap is displayed on the LCD only if the individual trap flag for that trap is
enabled. For more information about the individual trap flags, refer to “Configuring
for Trap Generation and Accessing Trap Information.”
The 8239 refreshes the LCD every 2 seconds with the last trap that was generated.
If multiple traps occur before the LCD is refreshed, only the last trap is displayed. A
trap remains on the LCD display until a subsequent trap overwrites it.
Sending the Traps to an SNMP Application (8239 Model 1 only)
A trap that is sent via SNMP enables a management application to interpret the
trap and provide different mechanisms for alerting the user about the event. When
a trap is generated, the 8239 Model 1 sends the trap via SNMP if there is a valid
entry in the 8239’s trap community table. The trap community table defines the IP
addresses to which traps will be sent. It can contain up to 30 entries.
There are no entries configured in the trap community table at the factory. To add
entries to the trap community table, issue the SET TRAP_COMMUNITY terminal
interface command. To control the IP addresses to which traps are sent, you must
use one of these parameters in the SET TRAP_COMMUNITY command:
¹
all to send all generated traps to the specified IP address
¹
tr_surrogate to send the IBM TR Surrogate MIB traps (CRS, REM, RPS) to
the specified IP address
¹
ibm8239 to send the 8239 MIB traps to the specified IP address
¹
rmon/mib2 to send RMON alarms and MIB II traps to the specified IP address
To clear entries in the trap community table, issue the CLEAR TRAP_COMMUNITY
terminal interface command.
Configuring for Trap Generation and Accessing Trap Information
The 8239 can generate the following types of traps:
¹
8239-specific traps
¹
IBM Token-Ring Surrogate traps
¹
MIB II traps
¹
RMON alarms
Some of the traps have trap flags associated with them so that you can control
whether the traps are displayed or sent. The following sections describe each type
of trap.
8239-Specific Traps
All 8239-specific traps are forwarded to any 8239 Model 1 in the stack for additional
processing. 8239-specific traps can be divided into groups according to whether the
traps have associated trap flags.
Traps That Have Multiple Flags
7-12
8239 Setup and User’s Guide