Network Management Using Snmp; All Contents Copyright (C) 2005 Zyxel Communications Corporation - ZyXEL Communications P-2608HWL-D1 Support Notes

WWW.DYNDNS.ORG.
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Network Management Using SNMP

1. SNMP Overview
Simple Network Management Protocol
management information between network devices (such as routers and switches). By using SNMP, network
administrators can easily manage network devices and detect and solve network problems. SNMP is a member
of the TCP/IP protocol suite and it uses UDP to exchange messages between a management Client and an
Agent, residing in a network node.
There are two versions of SNMP: Version 1 and Version 2. ZyXEL supports SNMPv1. Most of the changes
introduced in Version 2 enhance SNMP's security capabilities. SNMP encompasses three main areas:
1. A small set of management operations.
2. Definitions of management variables.
3. Data representation.
Operations allowed are: Get, GetNext, Set, and Trap. These functions operate based on the variables stored on
network nodes. Examples of variables include statistic counters and node port status. All SNMP management
functions are carried out through these simple operations. No action operations are available, but these can be
simulated by setting the variable flags. For example, to reset a node, a counter variable called 'time to reset'
could be set to a value which causes the node to reset after the time has elapsed.

All contents copyright (c) 2005 ZyXEL Communications Corporation.

P-2608HWL Series Support Notes
Note that the Wildcard
DDNS service provider.
(SNMP) is an applications-layer protocol used to exchange the
WWW.DYNDNS.ORG
option is available from the
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