
SNMP Support for Novell eDirectory
443
no
vd
ocx (
E
NU)
01
F
ebr
ua
ry
200
6
Managed Devices
A managed device is any device that has SNMP installed on it. A managed device could be a host,
router, bridge, hub, etc. NMS can monitor and communicate with managed devices.
The information between the NMS and the managed device is transferred through two types of
agents: subagent and master agent.
Subagent
The subagent gathers information about the managed device and passes the information to the
master agent.
Master Agent
The master agent exchanges information between the various subagents and the NMS. The master
agent runs on the same host machine as the subagents with which it communicates.
Management Information Base
SNMP exchanges network information in the form of protocol data units (PDUs). PDUs contain
information about variables stored on the managed device. These variables are known as managed
objects and have values and titles that are reported to the NMS. All managed objects are defined in
the Management Information Base (MIB). MIB is a virtual database with a tree-like hierarchy.
SNMP Network Management Protocol
The basic functions of SNMP are listed in the following table.
For more information about SNMP, refer to the following Web sites:
•
NET-SNMP Home Page (http://net-snmp.sourceforge.net)
•
SNMP FAQ (http://www.faqs.org/faqs/snmp-faq/part1)
•
RFC 1157 (http://www.ietf.org/rfc/rfc1157.txt)
•
SNMPLink (http://www.snmplink.org)
•
SNMPInfo (http://www.snmpinfo.com)
•
SNMP RFC Standard MIBs and Informative Links (http://www.wtcs.org/snmp4tpc/
snmp_rfc.htm)
•
RFC 2605 (http://ietf.org/rfc/rfc2605.txt?number=2605)
Function
Description
Get
Used by the manager to request information from an agent.
Get Next
Used by the manager to obtain information from an array or a table.
Get Response
Used by the queried agent to satisfy a request made by the manager.
Set
Used by the manager to modify the value of the variable which resides
on the agent’s MIB.
Trap
Used by the agent to notify the manager that a certain event has
occurred.
Содержание EDIRECTORY 8.8 - GUIDE
Страница 4: ...novdocx ENU 01 February 2006...
Страница 16: ...16 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 68: ...68 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 90: ...90 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 116: ...116 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 128: ...128 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 184: ...184 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 249: ...250 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 307: ...308 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 333: ...334 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 371: ...372 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 439: ...440 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 519: ...520 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 529: ...530 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...
Страница 555: ...556 Novell eDirectory 8 8 Administration Guide novdocx ENU 01 February 2006...