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Full Discussion: SNMP Community String ???
Special Forums IP Networking SNMP Community String ??? Post 302068699 by zillah on Monday 20th of March 2006 11:50:36 AM
Old 03-20-2006
Thanks Neo

Quote:
When a client sends an SNMP trap to a server receiving SNMP trap information, the SNMP community string is not required.
My understanding to client and server are this:

1- Managed station (agent or Network element) can be router, switch, hub, printer, ,,,ect has software called server.

2- Network Managemnet Station (NMS) which is normally PC has got software called client.

3- Managed station (agent) send trap to (NMS).

http://www.comptechdoc.org/os/window.../wtcpsnmp.html
Trap - A command or message used by the agent to inform the manager of a certain event.

A- Now can the client (Manager) send trap to server (managed) ?because my understanding to your explianantion that client (Manager) is able to send trap to server (managed),,,,please correct me

B- What is the meaning of public and private ? why have they got these names ?
Last edited by zillah; 03-20-2006 at 12:57 PM..
 

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LEARN ABOUT SUSE

snmptrap

SNMPTRAP(1)							     Net-SNMP							       SNMPTRAP(1)

NAME

       snmptrap, snmpinform - sends an SNMP notification to a manager

SYNOPSIS

       snmptrap -v 1 [COMMON OPTIONS] [-Ci] enterprise-oid agent generic-trap specific-trap uptime [OID TYPE VALUE]...

       snmptrap -v [2c|3] [COMMON OPTIONS] [-Ci] uptime trap-oid [OID TYPE VALUE]...

       snmpinform -v [2c|3] [COMMON OPTIONS] uptime trap-oid [OID TYPE VALUE]...

DESCRIPTION

       snmptrap is an SNMP application that uses the SNMP TRAP operation to send information to a network manager.  One or more object identifiers
       (OIDs) can be given as arguments on the command line.  A type and a value must accompany each object identifier.   Each	variable  name	is
       given in the format specified in variables(5).

       When  invoked  as snmpinform, or when -Ci is added to the command line flags of snmptrap, it sends an INFORM-PDU, expecting a response from
       the trap receiver, retransmitting if required.  Otherwise it sends an TRAP-PDU or TRAP2-PDU.

       If any of the required version 1 parameters, enterprise-oid, agent, and uptime are specified as empty,  it  defaults  to  1.3.6.1.4.1.3.1.1
       (enterprises.cmu.1.1), hostname, and host-uptime respectively.

       The TYPE is a single character, one of:
	      i  INTEGER
	      u  UNSIGNED
	      c  COUNTER32
	      s  STRING
	      x  HEX STRING
	      d  DECIMAL STRING
	      n  NULLOBJ
	      o  OBJID
	      t  TIMETICKS
	      a  IPADDRESS
	      b  BITS
       which are handled in the same way as the snmpset command.

       For example:

       snmptrap -v 1 -c public manager enterprises.spider test-hub 3 0 '' interfaces.iftable.ifentry.ifindex.1 i 1

       will send a generic linkUp trap to manager, for interface 1.

OPTIONS

       snmptrap takes the common options described in the snmpcmd(1) manual page in addition to the -Ci option described above.

SEE ALSO

       snmpcmd(1), snmpset(1), variables(5).

4th Berkeley Distribution					    08 Feb 2002 						       SNMPTRAP(1)
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