CTC Union FRM220-NMC User Manual Download Page 18

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Chapter 2 Provisioning

b.) Trap Management

From the SNMP Manager Configuration Menu, select 'N' for trap management configuration.

****************************************
*** CTC UNION TECHNOLOGIES CO., LTD. ***
*** FRM220 NMC VER. 1.95 ***
****************************************
<< Trap Configuration Setup of Chassis 0 >>
Trap Receiver IP Community String
================ ================
#1 192.168.1.100 private
#2 --- ---
#3 --- ---
#4 --- ---
#5 --- ---
#6 --- ---
#7 --- ---
#8 --- ---
Command Function Key:
<1>~<8>: Edit trap receiver #1 to #8 setting.
<D> : Delete all settings.
<N> : Go to Manager Configuration menu.
<S> : Confirm above setting and restart SNMP.
<ESC> : Back to main menu without modification.
Please select an item.

The following are descriptions of the function keys available and the actions which they perform.

1~8:

Use these keys to select any one of eight trap destination addresses.

: Use this to clear all settings.

: Use this key to go back to manager configuration.

: Use this key to confirm settings and restart the SNMP daemon.

ESC

: This key will leave the setting menu without saving any changes.

Conclusion

The community strings act like passwords in dealing with the device via SNMP protocol. By changing the

community strings for read / write ('private' in these examples) and read only (public) access, and assigning a
community string to an access IP, an administrator can control access to the

FRM220

. Community string names

are case sensitive, therefore 'puBlic', 'Public' and 'public' are all different strings.

Now that both the 'System' and 'Manager' settings are complete, the

FRM220

is ready to be managed remotely

over an IP network. The system provides a Telnet server feature that allows login over TCP/IP networks and
provides a menu display almost identical to that of the serial console mode. All functions available from Console
are available in the Telnet session.

The

FRM220-NMC

is supplied with an enterprise MIB file (Management Information Base) that can be

compiled into any standard SNMP network management software. The MIB file complies with MIB-II and ANS.1
standards. The SNMP protocol used in the

FRM220-NMC

is compliant with both SNMP V1 and SNMP V2C. The

kernel in the

FRM220-NMC

is capable of supporting SNMP V3, however as of this writing that support has not yet

been enabled. The major difference between SNMP V2C and V3 is the use of encryption layer for SNMP traffic.
This requires the passing of public keys and key checks to ensure that both agent and manager are who they really
say they are. It also ensures that should it be intercepted by a sniffer, the SNMP traffic is encrypted and not sent in
plain text format, making a "man-in-the-middle" attack less likely.

Later in Chapter 3, we will describe in detail the operation of the Web based management. This graphical

management allows control of many chassis in a convenient and popular WWW environment. When using web
based management, the actual communications between the browser and the NMC card is via standard HTTP
protocol.

Please refer to

Appendix A

for detailed configuration of the

FRM220

available converter cards.

Set up to 8 trap receivers,
entering their IP addresses.