All MIBs › RFC1213-MIB
Category: IP and Core Protocols, Network Interfaces, SNMP Framework
Description:
Defines MIB-II, the core set of managed objects for network management of TCP/IP-based devices, organized into groups including System, Interfaces, IP, ICMP, TCP, UDP, and SNMP.
What Is RFC1213-MIB?
RFC1213-MIB defines MIB-II, the vendor-neutral IETF standard (RFC 1213) that specifies the baseline set of managed objects required for managing any TCP/IP-based network device, organized into the classic System, Interfaces, IP, ICMP, TCP, UDP, EGP, and SNMP groups. It exposes core categories of data including device identity and uptime (system group), per-interface operational and administrative status and traffic counters (interfaces group), IP addressing and routing tables, and TCP/UDP connection and protocol statistics. Because the system group carries sysUpTime, sysDescr, and sysContact, and the interfaces group carries ifOperStatus/ifAdminStatus and error/discard counters, this module is a primary building block for monitoring basic device availability, interface health, and network-layer connectivity status. As the original IETF baseline, the rfc1213 mib has been partially superseded in modern deployments by more specialized successors such as SNMPv2-MIB (system group) and IF-MIB (interfaces group), though it remains widely implemented for backward compatibility. It is deployed essentially universally, on routers, switches, servers, and any SNMP-capable network-attached device, as the lowest common denominator of SNMP manageability.
IPNetwork Monitor allows you to monitor SNMP objects defined in RFC1213-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.
What Can Be Monitored
- interface operational/administrative status
- interface input/output errors and discards
- IP address and routing table entries
- TCP connection states
- UDP listener ports
- system uptime and description
Supported Devices
- vendor-neutral, standards-based MIB, not tied to a specific manufacturer
- applies to any TCP/IP-capable network device (routers, switches, servers, hosts)
Monitoring Examples
A network administrator would poll the classic MIB-II interfaces table (ifTable/ifEntry, keyed by ifIndex) to check ifOperStatus against ifAdminStatus and catch a link that is administratively up but operationally down, alongside ifInErrors/ifOutErrors to spot a degrading physical connection. They would also check ipAddrTable for the device's configured IP addresses and tcpConnTable/udpTable to see active TCP and UDP sessions, revealing whether a management or application service is actually listening as expected. Because sample_objects was not populated for this entry, these object names are cited from the well-known, standardized RFC 1213 groups rather than from an extracted sample list.
RFC description
Defined in RFC 1213, the MIB-II standard; manages TCP/IP network interface statistics, system information, and core network device operations.
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