SNMP Support

Introduction

NetcomRouter supports the Simple Network Management Protocol (SNMP). Support for SNMP is made possible by using a SMUX Peer which communicates with the local SNMP Agent. The SNMP Agent is responsible for communicating the requests from the Network Manager to the local SMUX Peers. The SNMP Agent will typically only manage objects from the Interface Management Information Base (MIB) (RFC 1213); support for other MIBs must come from the SMUX Peers.

Note: The SNMP Agent must be supplied by the operating system vendor or through some other third party vendor.

The SMUX Peer supplied with NetcomRouter is based upon the Multi-protocol Interconnect Over X.25 (MIOX25) MIB (RFC 1461). There have been some additions to the MIB that are specific to NetcomRouter. For this reason, a Software Group-specific object identifier is used to reference this MIB.

A complete description of the objects contained in the MIOX25 MIB are found in the files /usr/lib/xinet/snmp/mioxV1.my and /usr/lib/xinet/snmp/mioxV2.my for MIB versions 1 and 2 respectively. Network Managers running on remote hosts need a copy of this file in order to access the MIOX25 MIB.

SMUX Peer Installation

On the SCO operating system, TCP/IP release 1.2.1 or higher is required. Check the release number in the file /etc/perms/tcprt. In addition, the SCO Support Level Supplement net372 or net382d is required. net382d contains patches required to use SNMP traps. Although traps are not used in the X25MIOX SMUX Peer, you may have installed other SMUX Peers that use traps.

During the installation of NetcomRouter, you are asked if you wish to include SNMP support. If you chose not to have it installed, then the MIOX25 SMUX Peer can be manually configured into the system after NetcomRouter is installed. All the necessary files are installed into the /usr/lib/xinet/snmp directory. To manually install SNMP support, perform the following steps.

Copy the necessary files by executing the following commands:

 
cp /usr/lib/xinet/snmp/miox /etc
cp /usr/lib/xinet/snmp/mioxd /etc
cp /usr/lib/xinet/snmp/mioxd.defs /etc

Configure the SNMP Agent.

The SNMP Agent must be configured before the MIOX25 SMUX Peer can be started. To configure the SNMP Agent use mkdev snmp.
Enter the community information.

You will be asked for this during SNMP configuration.

Community information describes hosts that are permitted to access the SNMP Agent. Community information, consisting of a community name, IP address and access privileges, is stored in /etc/snmpd.comm. Some example community names are public, netman and interop. The Network Manager will have a predefined community name that it uses. This community name must be configured into the system before the Network Manager will be permitted to access the system.

Access privileges are either READ, WRITE (implies READ), or NONE.
Enable the MIOX25 SMUX Peer to access the SNMP Agent.

Add the following entry into /etc/snmpd.peers.
```
 
"mioxd" 1.3.6.1.4.1.196.1 "aintNoThing"
 
```
Start the SMUX Peer daemon.

The start/stop script for the MIOX25 SMUX Peer (/etc/miox) must be used to start the SMUX Peer daemon (/etc/mioxd). To start the MIOX25 SMUX Peer daemon, use /etc/miox start.

Note: This command can be added into system startup scripts to have the daemon invoked automatically during startup. Ensure that the snmpd daemon is started before starting the MIOX25 SMUX Peer.

Revision 6.1.0 (February 2003)