All MIBs › JUNIPER-IPv4-MIB
Organization: Juniper Networks, Inc.
Last Updated: 2003-07-18
Category: IP and Core Protocols, Vendor: Juniper
Description: Defines IPv4-specific managed objects for address management, fragmentation statistics, and routing on Juniper Networks platforms.
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What Is JUNIPER-IPv4-MIB?
JUNIPER-IPv4-MIB is a Juniper Networks enterprise MIB that extends the standard IF-MIB's interface table with IPv4-specific configuration, addressing, and statistics data, such as fragmentation and per-interface IPv4 settings. It exposes configuration objects (e.g., jnxIpv4Config) governing IPv4 behavior on interfaces, providing visibility into how IPv4 is configured and behaving at the interface level. Its monitoring role centers on network/protocol configuration and traffic behavior -- such as fragmentation statistics that can reveal MTU mismatches -- rather than physical hardware sensors, making it a networking-configuration and performance MIB. It has an explicit, stated dependency on IF-MIB, since it extends the ifTable rather than defining a standalone object hierarchy. Typical deployment is any Juniper router or switch where administrators need finer-grained IPv4 addressing and fragmentation visibility beyond what IF-MIB and IP-MIB alone provide. Network engineers evaluating or troubleshooting this functionality can download the JUNIPER-IPv4-MIB file directly to load it into their MIB browser.
IPNetwork Monitor allows you to monitor SNMP objects defined in JUNIPER-IPv4-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.
Supported Devices
- Juniper router
- Juniper switch
Monitoring Examples
An administrator would check jnxIpv4Config on a given interface to verify IPv4-specific settings are applied as expected, and would look for elevated fragmentation counters (implied by the MIB's stated focus) to detect an MTU mismatch causing packet fragmentation across a WAN link. Because only jnxIpv4Config was provided as a sample object, specific statistics-table names cannot be confirmed, but the module description makes clear its scope covers address management, fragmentation, and routing extensions to ifTable. This MIB is best used alongside IF-MIB when troubleshooting IPv4-level interface behavior.
What Can Be Monitored
- IPv4 interface configuration
- fragmentation statistics
- IPv4 address management
- interface-level routing extensions
Imported Objects
From JUNIPER-SMI
| jnxMibs | OBJECT-IDENTITY |
From SNMPv2-SMI
| IpAddress | |
| MODULE-IDENTITY | |
| OBJECT-TYPE |
OIDs
RFC description
Extends interface table with IPv4 address configuration and management for Juniper network routing platforms.
Start monitoring Juniper router/switch (IPv4 interface configuration/fragmentation) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.