CTRON-NAT-MIB

All MIBs › CTRON-NAT-MIB

Category: IP and Core Protocols, VPN and Security, Vendor: Cabletron/Enterasys

Description: Manages Cabletron Network Address Translation configuration, NAT table entries, and address pool management.

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What Is CTRON-NAT-MIB?

CTRON-NAT-MIB is a Cabletron (Enterasys) enterprise MIB that manages Network Address Translation (NAT) configuration on Cabletron routing devices, including NAT table entries and address pool management for translating internal private addresses to external public addresses. It exposes configuration objects describing NAT rules/mappings and the pools of addresses available for translation. As a configuration-oriented MIB it is used mainly to verify NAT rules and address pools are provisioned as intended, and secondarily to watch for address-pool exhaustion, which is effectively a service-level fault. It would typically be used alongside IP-MIB and standard routing MIBs since NAT operates on top of a device's IP forwarding path. It is deployed on Cabletron/Enterasys routers or firewalls performing address translation at a network edge. Engineers can download the CTRON-NAT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CTRON-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

Cabletron/Enterasys router or firewall

Monitoring Examples

No object or table names beyond the generic ASN.1 IMPORTS clause were included in the source data, so a grounded polling example can't be given with real identifiers. Conceptually, an administrator would poll NAT table entry counts and address-pool utilization objects to check whether a translation pool is nearing exhaustion, which would explain new connections failing to establish. Without confirmed object names, this remains a general description rather than a specific table-level example.

What Can Be Monitored

NAT table entry count
address pool utilization
NAT rule/mapping configuration

Imported Objects

From CTRON-IP-ROUTER-MIB

nwIpClientServices	OBJECT-IDENTITY
nwIpComponents	OBJECT-IDENTITY
nwIpMibs	OBJECT-IDENTITY
nwIpRouter	OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
IpAddress

From ROUTER-OIDS

nwRtrProtoSuites

OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
ctNat	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1
ctNatConfigGroup	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1
INT ctNatPublicIfIndex	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.1	INTEGER	read-write	This is the value of the MIB II ifindex which identifies the router port connected to the public network.
IP ctNatPublicIP	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.2	IpAddress	read-only	This is the IP address of the interface which is selected by ctNatPublicIfIndex.
IP ctNatPublicMask	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.3	IpAddress	read-only	This is the subnet mask of the interface which is selected by ctNatPublicIfIndex.
INT ctNatMaxConn	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.4	INTEGER	read-write	This is the value of the maximum number of simultaneous connections allowed, using the Network Address Translator application. The default value is 200. Acceptable values are from 40 to 1000.
INT ctNatTcpTimeout	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.5	INTEGER	read-write	This is the value in seconds after which an idle TCP connection will be deleted. The default value is 300. Acceptable values are from 60 to 3600.
INT ctNatUdpTimeout	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.6	INTEGER	read-write	This is the value in seconds after which an idle UDP connection will be deleted. The default value is 120. Acceptable values are from 60 to 3600.
CTR ctNatPktsL2I	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.7	Counter	read-only	This is the number of packets which have been forwarded from the private network to the public network since the last reset.
CTR ctNatPktsI2L	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.8	Counter	read-only	This is the number of packets which have been forwarded from the public network to the private network since the last reset.
CTR ctNatBytesL2I	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.9	Counter	read-only	This is the number of bytes which have been forwarded from the private network to the public network since the last reset.
CTR ctNatBytesI2L	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.10	Counter	read-only	This is the number of bytes which have been forwarded from the public network to the private network since the last reset.
INT ctNatTcpConn	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.11	INTEGER	read-only	This is the number of active TCP connections using the Network Address Translator application.
INT ctNatUdpConn	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.12	INTEGER	read-only	This is the number of active UDP connections using the Network Address Translator application.
INT ctNatIcmpConn	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.13	INTEGER	read-only	This is the number of active ICMP connections using the Network Address Translator application.
CTR ctNatRetries	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.14	Counter	read-only	This is the number of detected TCP retries in both directions since the last reset.
CTR ctNatBadSums	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.15	Counter	read-only	This is the number of detected checksum errors in both directions since the last reset.
CTR ctNatTotalPkts	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.16	Counter	read-only	This is the total number of packets by the application since the last reset.
CTR ctNatBadPkts	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.17	Counter	read-only	This is the total number of packets detected with an invalid format since the last reset.
CTR ctNatResPkts	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.18	Counter	read-only	This is the total number of packets detected with a reserved address since the last reset.
CTR ctNatTotTcpConn	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.19	Counter	read-only	This is the number of TCP connections made using the Network Address Translator application since the last reset.
CTR ctNatTotUdpConn	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.20	Counter	read-only	This is the number of UDP connections made using the Network Address Translator application since the last reset.
CTR ctNatTotIcmpConn	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.21	Counter	read-only	This is the number of ICMP connections made using the Network Address Translator application since the last reset.
ctNatConfigTable	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.22		not-accessible	Information describing the configuration parameters for each instance of NAT.
ctNatConfigEntry	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.22.1		not-accessible	A description of a single server entry.
INT ctNatConfigId	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.22.1.1	INTEGER	read-only	A unique value identifying an element in a sequence of groups which belong to the NAT configuration table.
INT ctNatAdminStatus	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.22.1.2	INTEGER	read-write	Used to enable and disable the Network Address Translator method for this instance. This object must be set to enabled for the translation to occur on ctNatLocalIfIndex.
INT ctNatOperStatus	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.22.1.3	INTEGER	read-only	Indicates the current operating status of the Network Address Translator feature.
INT ctNatLocalIfIndex	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.22.1.4	INTEGER	read-write	This is the value of the MIB II ifindex which identifies the router port connected to the private network.
IP ctNatLocalIP	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.22.1.5	IpAddress	read-only	This is the IP address of the interface which serves as the gateway for the private network. With ctNatLocalMask, it serves to define the subnet of the hosts on the network. The preferred address is 192.168.254.254, part of the class C net reserved by RFC1597.
IP ctNatLocalMask	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.1.22.1.6	IpAddress	read-only	This is the subnet mask of the interface which serves as the gateway for the private network. With ctNatLocalIP, it serves to define the subnet of the hosts on the network. The preferred mask is 255.255.255.0, part of the class C net reserved by RFC1597.
ctNatServerGroup	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.2
INT ctNatTotServerEntries	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.2.1	INTEGER	read-only	This is the total number of server assignments.
ctNatServerListTable	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.2.2		not-accessible	Information describing the configured parameters which designate a local device as a server.
ctNatServerListEntry	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.2.2.1		not-accessible	A description of a single server entry.
INT ctNatServerId	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.2.2.1.1	INTEGER	read-only	A unique value identifying an element in a sequence of groups which belong to the NAT Server List. This value ranges from 1 to 16.
OCT ctNatProxyServer	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.2.2.1.2	OCTET STRING	read-write	A description of a proxy server assignment. The format is private IP address of the server, followed by the public port number, followed by the private port number, followed by the protocol to be handled by the server. The fields are delimited by commas. Each record must be 31 chars or less. Protocol choices are TCP and UDP.
ctNatConnStatsGroup	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3
INT ctNatTotActiveConn	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.1	INTEGER	read-only	This is the total number of active connections.
ctNatConnStatsTable	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2		not-accessible	Information describing the configured parameters which designate a local device as a server.
ctNatConnStatsEntry	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1		not-accessible	A description of a single server entry.
INT ctNatConnStatsID	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.1	INTEGER	read-only	A unique value identifying an element in a sequence of active connections which belong to the NAT Connection Statistics Group.
IP ctNatConnStatsForeignIP	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.2	IpAddress	read-only	This is the IP address of the foreign host during this active connection.
IP ctNatConnStatsLocalIP	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.3	IpAddress	read-only	This is the IP address of the local host during this active connection.
INT ctNatConnStatsPublicPort	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.4	INTEGER	read-only	This is the port number addressed by an external device. It is also substituted for the local port by NAT on outbound packets.
INT ctNatConnStatsLocalPort	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.5	INTEGER	read-only	This is the local host's port for TCP or UDP for this active connection.
INT ctNatConnStatsForeignPort	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.6	INTEGER	read-only	This is the source port number used by the foreign host for this active connection.
CTR ctNatConnStatsOutgoingPkts	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.7	Counter	read-only	This is the number of packets that have been sent from the local net to the public net by this active connection.
CTR ctNatConnStatsOutgoingBytes	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.8	Counter	read-only	This is the number of bytes that have been sent from the local net to the public net by this active connection.
CTR ctNatConnStatsIncomingPkts	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.9	Counter	read-only	This is the number of packets that have been sent from the public net to the local net by this active connection.
CTR ctNatConnStatsIncomingBytes	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.10	Counter	read-only	This is the number of bytes that have been sent from the public net to the local net by this active connection.
INT ctNatConnStatsTimeSinceUse	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.11	INTEGER	read-only	This is the time in seconds since the last packet was sent or received on this active connection.
INT ctNatConnStatsProtocol	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.12	INTEGER	read-only	This is the type of IP protocol used by this active connection. Options are 1 = ICMP, 6 = TCP and 17 = UDP.
INT ctNatConnStatsTCPSeq	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.13	INTEGER	read-only	This is the last TCP sequence number of local host sent on this active connection.
INT ctNatConnStatsTCPAck	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.14	INTEGER	read-only	This is the last TCP acknowledgement number of local host sent on this active connection.
INT ctNatConnStatsTCPState	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.15	INTEGER	read-only	This is the TCP connection state value on this active connection.
CTR ctNatConnStatsLocalRetrys	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.16	Counter	read-only	This is the number of TCP retries by the local host on this active connection.
CTR ctNatConnStatsForeignRetrys	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.17	Counter	read-only	This is the number of TCP retries by the foreign host on this active connection.
CTR ctNatConnStatsLocalChecksum	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.18	Counter	read-only	This is the number of times checksum failed in a packet from the local host on this active connection.
CTR ctNatConnStatsForeignChecksum	1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.1.3.2.1.19	Counter	read-only	This is the number of times checksum failed in a packet from the foreign host on this active connection.

RFC description

Manages IP Network Address Translation configuration, server assignments, and connection statistics per RFC 1631.

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Download CTRON-NAT-MIB

What Is CTRON-NAT-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description