ONEACCESS-NAT-MIB

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Organization: OneAccess

Last Updated: 2011-10-27

Category: CPE/Router

Description: Manages Network Address Translation configuration, mappings, and session statistics on OneAccess CPE routers.

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What Is ONEACCESS-NAT-MIB?

ONEACCESS-NAT-MIB is a vendor MIB from OneAccess for managing Network Address Translation on its CPE routers, covering NAT configuration, address mappings, and session-level statistics. It exposes counters for active and closed NAT sessions, inbound/outbound translation counts, address map counts, and packet drop counters, plus a per-session table with session identifiers. Its main monitoring value is operational/performance status of the NAT function, letting an operator watch active session counts, translation failures, and dropped packets to detect NAT table exhaustion, address pool depletion, or misconfigured mappings that would block outbound connectivity. It complements standard IP and interface MIBs on the router, since NAT operates on top of the underlying IP forwarding path. It is typically deployed on OneAccess branch-office routers performing NAT/PAT for LAN-to-WAN Internet access. Engineers can download the ONEACCESS-NAT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ONEACCESS-NAT-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

OneAccess CPE router

Monitoring Examples

An administrator would poll oacNatActiveSessions and oacNatSessionsClosed to track session churn, and oacNatDynamicAllocFailures alongside oacNatInsideAddrMaps/oacNatOutsideAddrMaps to detect address pool exhaustion. Rising oacNatInPktsDropped or oacNatOutPktsDropped counters would reveal NAT-related packet loss, and walking oacNatSessionTable by oacNatSessionID lets an operator inspect individual active translations. A spike in oacNatDynamicAllocFailures combined with high oacNatActiveSessions would strongly suggest the NAT table or address pool has run out of capacity.

What Can Be Monitored

active NAT sessions
closed NAT sessions
inbound/outbound translation counts
dynamic allocation failures
dropped NAT packets
per-session NAT entries

Imported Objects

From IF-MIB

ifIndex

OBJECT-TYPE

From ONEACCESS-GLOBAL-REG

oacExpIMIpNatNotifications	OBJECT-IDENTITY
oacExpIMIpNatStatistics	OBJECT-IDENTITY
oacMIBModules	OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TimeInterval

OIDs

OID symbolic	OID numeric	Type	Access	Description
oacNatMIBModule	1.3.6.1.4.1.13191.1.100.668			Contact updated
oacNatStatObjects	1.3.6.1.4.1.13191.10.3.1.1.1.1
oacNatStatGlobal	1.3.6.1.4.1.13191.10.3.1.1.1.1.1
C32 oacNatActiveSessions	1.3.6.1.4.1.13191.10.3.1.1.1.1.1.1	Counter32	read-only	Total number of active sessions
C32 oacNatSessionsClosed	1.3.6.1.4.1.13191.10.3.1.1.1.1.1.2	Counter32	read-only	Total number of sessions closed
C32 oacNatInTranslations	1.3.6.1.4.1.13191.10.3.1.1.1.1.1.3	Counter32	read-only	Total number of inbound translations
C32 oacNatOutTranslations	1.3.6.1.4.1.13191.10.3.1.1.1.1.1.4	Counter32	read-only	Total number of outbound translations
C32 oacNatInsideAddrMaps	1.3.6.1.4.1.13191.10.3.1.1.1.1.1.5	Counter32	read-only	Total number of active inside address bindings
C32 oacNatOutsideAddrMaps	1.3.6.1.4.1.13191.10.3.1.1.1.1.1.6	Counter32	read-only	Total number of active outside address bindings
C32 oacNatInPktsDropped	1.3.6.1.4.1.13191.10.3.1.1.1.1.1.7	Counter32	read-only	Total number of inbound packets dropped
C32 oacNatOutPktsDropped	1.3.6.1.4.1.13191.10.3.1.1.1.1.1.8	Counter32	read-only	Total number of outbound packets dropped
C32 oacNatDynamicAllocFailures	1.3.6.1.4.1.13191.10.3.1.1.1.1.1.9	Counter32	read-only	Number of sessions rejected due to memory full
oacNatSessionTable	1.3.6.1.4.1.13191.10.3.1.1.1.1.2		not-accessible	Table of active sessions
oacNatSessionEntry	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1		not-accessible	An index into the oacNatSessionTable
U32 oacNatSessionID	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.1	Unsigned32	not-accessible	An integer ID which uniquely identifies the session at the NAT router.
INT oacNatSessionProtocol	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.2	INTEGER	read-only	IP protocol ID
IP oacNatSessionInsideLocalAddr	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.3	IpAddress	read-only	Inside local address
INT oacNatSessionInsideLocalPort	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.4	INTEGER	read-only	Inside local port
IP oacNatSessionOutsideLocalAddr	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.5	IpAddress	read-only	Outside local address
INT oacNatSessionOutsidePort	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.6	INTEGER	read-only	Outside port
IP oacNatSessionInsideGlobalAddr	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.7	IpAddress	read-only	Inside Global address
INT oacNatSessionInsideGlobalPort	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.8	INTEGER	read-only	Inside global port
IP oacNatSessionOutsideGlobalAddr	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.9	IpAddress	read-only	Inside global address
C32 oacNatSessionInPkts	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.10	Counter32	read-only	Number of inbound packets
C32 oacNatSessionOutPkts	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.11	Counter32	read-only	Number of outbound packets
NUM oacNatSessionTimeout	1.3.6.1.4.1.13191.10.3.1.1.1.1.2.1.12	TimeInterval	read-only	The timeout in seconds after which a session will be removed from the table if it remains idle
oacNatInsideMapTable	1.3.6.1.4.1.13191.10.3.1.1.1.1.3		not-accessible	Table of inside address bindings
oacNatInsideMapEntry	1.3.6.1.4.1.13191.10.3.1.1.1.1.3.1		not-accessible	An index into the table oacNatInsideMapTable
IP oacNatIMLocalAddr	1.3.6.1.4.1.13191.10.3.1.1.1.1.3.1.1	IpAddress	not-accessible	Inside local address
IP oacNatIMGlobalAddr	1.3.6.1.4.1.13191.10.3.1.1.1.1.3.1.2	IpAddress	read-only	Inside global address
I32 oacNatIMSessions	1.3.6.1.4.1.13191.10.3.1.1.1.1.3.1.3	Integer32	read-only	Number of active sessions
NUM oacNatIMTimeout	1.3.6.1.4.1.13191.10.3.1.1.1.1.3.1.4	TimeInterval	read-only	Timeout in seconds
oacNatOutsideMapTable	1.3.6.1.4.1.13191.10.3.1.1.1.1.4		not-accessible	Table of outside address bindings
oacNatOutsideMapEntry	1.3.6.1.4.1.13191.10.3.1.1.1.1.4.1		not-accessible	An index into the table oacNatOutsideMap
IP oacNatOMGlobalAddr	1.3.6.1.4.1.13191.10.3.1.1.1.1.4.1.1	IpAddress	not-accessible	Outside global address
IP oacNatOMLocalAddr	1.3.6.1.4.1.13191.10.3.1.1.1.1.4.1.2	IpAddress	read-only	Outside local address
I32 oacNatOMSessions	1.3.6.1.4.1.13191.10.3.1.1.1.1.4.1.3	Integer32	read-only	Number of active sessions
NUM oacNatOMTimeout	1.3.6.1.4.1.13191.10.3.1.1.1.1.4.1.4	TimeInterval	read-only	Timeout in seconds
oacNatStatNotifications	1.3.6.1.4.1.13191.10.3.1.1.1.2
oacNatStatConformance	1.3.6.1.4.1.13191.10.3.1.1.1.3
oacNatStatGroups	1.3.6.1.4.1.13191.10.3.1.1.1.3.1
oacNatStatGeneralGroup	1.3.6.1.4.1.13191.10.3.1.1.1.3.1.1			This group is mandatory for all NAT entities.
oacNatStatCompliances	1.3.6.1.4.1.13191.10.3.1.1.1.3.2
oacNatStatCompliance	1.3.6.1.4.1.13191.10.3.1.1.1.3.2.1			The compliance statement for agents that support the ONEACCESS-NAT-MIB.
NTF oacNatNotificationMaximumSessionReached	1.3.6.1.4.1.13191.10.3.1.1.2.1			An NAT Notification maximum session reached signifies that the number of ACL sessions has reached its configured limit
NTF oacNatNotificationWarningSessionReachingLimit	1.3.6.1.4.1.13191.10.3.1.1.2.2			An NAT Notification warning session reaching limit signifies that the number of ACL sessions is near from its maximum configured limit

RFC description

IP NAT management for OneAccess equipment with session and ACL monitoring.

Start monitoring OneAccess CPE router (NAT session/address mapping statistics) 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.

Download ONEACCESS-NAT-MIB

What Is ONEACCESS-NAT-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description