Digi W manual N f i g u r i n g S N M P, About Snmp and the Device Server Agent

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Chapter 15

C o n f i g u r i n g S N M P

About SNMP and the Device Server Agent

This section introduces SNMP and network management in TCP/IP networks and it describes the device server agent. It discusses the following:

•Network management components

•SNMP agent

•SNMP traps

•MIB support of the device server agent

•Support traps of the device server agent

Network Management Components

The TCP/IP network management architecture contains the following components:

•Managed nodes such as host systems, routers, terminal and com- munications servers (such as device server) and other network devices

•One or more network managers (also called network management stations), which are the points from which the network is managed

•Agents that reside on managed nodes and retrieve management information and communicate this information to network managers

•The network management protocol, SNMP, which governs the exchange of information between the nodes and stations

•Management information, which is the database of information about managed objects. This database is called the management information base (MIB).

SNMP Management Agent

Each managed node contains at least one agent— a component that responds to requests from the network manager— that retrieves network management information from its node and notifies the manager when significant events occur.

SNMP Traps

A mechanism defined by SNMP is called a trap, which is a report or “alarm” from a managed node to an SNMP manager that a significant event has occurred.

MIB Support

The agent supports the following MIBs:

•Read-write for MIB II (RFC 1213), which is an Internet-standard MIB, consisting of managed objects from the systems, interfaces, IP, ICMP, TCP, UDP, transmission, and SNMP group

Chapter 15 Configuring SNMP

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Contents Digi TS W Family 9000329B Chapter Introduction Chapter Configuring WirelessConfiguring the IP Address N t e n t sChapter Configuring Autoconnection Setting Up RealPortConfiguring the Serial Ports Chapter Configuring PPPConfiguring Security Features Configuring IP RoutingConfiguring Users Configuring the Digi Device for IAIndustrial AutomationConfiguring DNS Configuring SnmpReference and Certifications Configuring Power Over the Serial PortsContents T r o d u c t i o n Setup OverviewOther Documents in the Library About Entering Commands on the Command LineSupported Devices About This GuideAbout Configuration Methods Configuration Prerequisites N f i g u r i n g W i r e l e s s Configuration ConsiderationsSelect Discover Digi Device from the CD Configuring Wireless Configuring Wireless Configuring Wireless Configuring Wireless N f i g u r i n g t h e I P a d d r e s s Options for Configuring the IP Address and MaskConfiguring the IP Address Using ARP-Ping Configuring the Ethernet Interface from the Command Line Configuring an IP Address using Dhcp and Rarp About RealPort T t i n g U p R e a l P o r tSetting Up RealPort Configuring the Serial Port Settings with the Web Interface Options for Configuring the Serial PortsConfiguring the Serial Port Settings from the Command Line N f i g u r i n g P P P Configuring Inbound PPP ConnectionsConfiguring Outbound PPP Connections Command Line Configuring Inbound PPP Connections ExampleProcedure Sample Use the following table for additional configurations Configuring PPP Modem Emulation Digi One TS and PortServer TS 2/4 MEI only D e m E m u l a t i o nCommon User Scenarios Serial Device Digi Device Server Modem Emulation Cable SignalsApplication AT Com Digi Device Server Response Mand Originating, Answering, and Disconnecting CallsServer. P represents a one second pause Code Modem Emulation AT Command Set Function ResultATP Function ResultATXn Accepted but ignored There is no Nvram support currently AT+MS Ascii Registers Function Range Units Saved DefaultRegister Function Range Units Saved Default Register Function Range Units Saved Default 17 11h =XON/XOFF &K4 Result Codes Short Long Form Modem Emulation N f i g u r i n g a u t o c o n n e c t i o n Configuring a Port for Autoconnection Web InterfaceCommands for Configuring Autoconnection by Port or by User Configuring a User for Autoconnection Web InterfaceClick Change Profile Configuring TCP Socket CommunicationConfiguring UDP Multicast Click Serial PortsClick Change Profile and select UDP Socket Configuring Autoconnection N f i g u r i n g I P R o u t i n g Configuring Static RoutesConfiguring Dynamic Routes Using RIP Configuring Proxy ARP Configuring IP Routing Controlling Access to Inbound Ports Controlling Access to the ConfigurationN f i g u r i n g S e c u r i t y F e a t u r e s Controlling Access to the Command Line Controlling Access to Outbound PortsConfiguring SSH Version 2 for Secure Communication Issuing User PasswordsDevice Required Hardware Firmware Http Controlling Access to ServicesSnmp SSH Configuring Security Features Configuring the User-Defined Protocol Configuring ModbusConfiguring the Digi Device for IA Industrial Automation About the Domain Name System N f i g u r i n g D N SConfiguration Procedures About Snmp and the Device Server Agent N f i g u r i n g S N M PMIB Configuration Procedure Web InterfaceN f i g u r i n g U s e r s About Configuring UsersCommon User Features Feature Description Set user FieldCommands for Configuring a User Configuring a User Web InterfaceClick New User Upgrading the Firmware Copying the Configuration to and from a Remote HostResetting Device Server Configuration to Defaults Commands for Resetting the Configuration to Defaults Managing the OS and Configuration Configuring RI Power Serial Power FeatureConfiguring DTR Power DTR on DTR OFF Serial Power TableConfiguring Power Over the Serial Ports Interpreting the LEDs F e r e n c e a n d C e r t i f i c a t i o n sColor State Indicates RJ-45 Pinouts EIA-232 EIA-422/485 EIA-485 Half Full-Duplex Environmental CertificationsDigi Contact Information Digi Contacts Reference and Certifications