Technicolor - Thomson SpeedTouchTM620 manual MIBs Explained, RFC1213 MIB-II

Chapter 10

SpeedTouch™ Monitoring

10.1.2 MIBs Explained.

Introduction As mentioned in “ Management Information Base” on page 135 both the

SpeedTouch™ SNMP agent and the SNMP manager rely on Management

Information Base (MIB) files containing all relevant SNMP objects.

In the following, all MIBs important for the SpeedTouch™ are described. Additionally some of the most important and/or interesting SNMP counters are shortly highlighted.

Standard MIBs Following MIBs are common standard MIBs that are relevant to monitoring the SpeedTouch™. All MIB manager implementations should provide these MIBs by default. Updated copies of the MIBs have been provided on the SpeedTouch™ Setup CD. It is advised to load the copies provided on the SpeedTouch™ Setup CD to your SNMP manager, instead of using the standard MIBs included with your SNMP manager.

RFC1213 MIB-II

MIB-II is defined by IETF Full Standards RFC1213, RFC 2011, RFC 2012 and RFC 2013 and is the fundamental MIB for TCP/IP based Internet, describing objects available from devices which run the Internet suite of protocols. The MIB is fundamental to SNMP and is referenced by many other MIB modules. It contains management information and statistics on the IP, ICMP, TCP, and UDP protocols.

RFC2863 IF-MIB

The IF-MIB is an extension and replacement of the interface table in MIB-II. It contains statistics on the number of bytes and packets transported across the represented interfaces, including errors.

System MIB (Enterprise specific branch MIB)

This required MIB is for administrative use by the other MIBs only. It provides the object IDs (OID) from the SpeedTouch™ specific MIBs and defines the Enterprise specific object identifier.

RFC1493 Bridge MIB

The Bridge-MIB contains management information on the Bridge port(s). It contains statistics on, for example, alignment errors, collisions and MAC transition errors.

IANAifType MIB

This required MIB module is for administrative use only, by the other MIBs. It defines the IANAifType Textual Convention, and thus the enumerated values of the ifType object defined in MIB-II's ifTable.

RFC2665 Ethernet-like MIB

The Ethernet MIB contains management information on the Ethernet interface(s). It contains statistics on, for example, alignment errors, collisions and MAC transition errors.

RFC2668 MAU MIB

The Medium Access Unit (MAU) MIB contains management information about medium access units. On SpeedTouch™ devices equipped with the four-port Ethernet switch, four MAU ports are present. The MAU MIB will give details about the type, status and provide statistics of each MAU. It also gives details of the auto negotiation that has taken place on each ethernet port.

136 E-DOC-CTC-20051017-0155 v1.0