Dell-TUNNEL-MIB

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Organization: Dell

Last Updated: 2012--0-5-

Category: Technology: VPN, Vendor: Dell

Description: Manages IP tunnel (GRE, IPIP) configuration and statistics on Dell network devices.

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What Is Dell-TUNNEL-MIB?

Dell-TUNNEL-MIB is a Dell private-enterprise MIB (built on the RadLAN-derived "rl" agent used in Dell PowerConnect-family switches) that manages IP tunnel configuration and statistics, including GRE/IPIP tunnels and ISATAP (Intra-Site Automatic Tunnel Addressing Protocol) IPv6-over-IPv4 transition tunnels. It exposes configuration objects for tunnel interfaces and ISATAP-specific parameters such as router discovery intervals and addressing, primarily configuration and protocol-state data rather than hardware sensors. Its monitoring value is on the software/protocol side: verifying that ISATAP tunnels are enabled and correctly addressed, and that router-solicitation/query intervals are set as expected, which helps detect IPv6 transition connectivity problems on the device. As a tunneling MIB it depends conceptually on IPv6 transition standards (ISATAP, defined in IETF RFCs) and on the vendor's general tunnel-interface framework (rlTunnelIfTable). It is typically deployed on Dell PowerConnect switches/routers that need IPv6-over-IPv4 tunneling for gradual IPv6 migration. Network engineers evaluating or troubleshooting this functionality can download the Dell-TUNNEL-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Dell-TUNNEL-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

Dell PowerConnect switch/router

Monitoring Examples

An administrator would check rlTunnelIsatapStatus to confirm ISATAP tunneling is enabled and rlTunnelIsatapRouterAddress/rlTunnelIsatapLocalIPv4Address to verify correct addressing, alongside rlTunnelIsatapQueryInterval and rlTunnelIsatapRSInterval for router-solicitation timing. The rlTunnelIfTable/rlTunnelIfEntry with rlTunnelIfEncapsMethod shows configured tunnel interfaces and their encapsulation method; an ISATAP tunnel with no router address discovered would indicate an IPv6 transition connectivity failure.

What Can Be Monitored

ISATAP tunnel status
ISATAP router/local IPv4 address
router solicitation/query intervals
tunnel interface encapsulation method

Imported Objects

From Dell-MIB

rnd	MODULE-IDENTITY

From DNS-SERVER-MIB

DnsName

From IANAifType-MIB

IANAtunnelType

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-SMI

IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

RowStatus

From TUNNEL-MIB

tunnelIfEntry

OBJECT-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
rlTunnel	1.3.6.1.4.1.89.122			The private MIB module definition for Tunneling.
INT rlTunnelIsatapStatus	1.3.6.1.4.1.89.122.1	INTEGER	read-write	The ISATAP status.
U32 rlTunnelIsatapRobustness	1.3.6.1.4.1.89.122.2	Unsigned32	read-write	specifies how many DNS Querys and Router Solicitations should be sent to get the corresponding reply.
DNS rlTunnelIsatapDnsHostName	1.3.6.1.4.1.89.122.3	DnsName	read-write	The domain name for ISATAP.
U32 rlTunnelIsatapQueryInterval	1.3.6.1.4.1.89.122.4	Unsigned32	read-write	specifies the time interval between sending of DNS Queries before receiving the first reply from the DNS Server.
U32 rlTunnelIsatapRSInterval	1.3.6.1.4.1.89.122.5	Unsigned32	read-write	specifies the time interval between sending of Router Solicitations before receiving the first reply from the ISATAP Router.
U32 rlTunnelIsatapMinQueryInterval	1.3.6.1.4.1.89.122.6	Unsigned32	read-only	specifies the minimum time interval between between successive queries of same advertising ISATAP interface.
U32 rlTunnelIsatapMinRSInterval	1.3.6.1.4.1.89.122.7	Unsigned32	read-only	specifies the minimum time between successive solicitations of the same advertising ISATAP interface.
IP rlTunnelIsatapRouterAddress	1.3.6.1.4.1.89.122.8	IpAddress	read-only	specifies the IPv4 address of ISATAP Router.
IP rlTunnelIsatapLocalIPv4Address	1.3.6.1.4.1.89.122.9	IpAddress	read-only	specifies the IPv4 address currently used as IPv4 source address for ISATAP Tunnel.
rlTunnelGeneral	1.3.6.1.4.1.89.122.11
rlTunnelIfTable	1.3.6.1.4.1.89.122.11.1		not-accessible	This table is parallel to tunnelIfTable, and is used to add/delete tunnel entries to/from that table. In addition it contains private objects.
rlTunnelIfEntry	1.3.6.1.4.1.89.122.11.1.1		not-accessible	Additional configuration parameters for a tunnel interface.
IAN rlTunnelIfEncapsMethod	1.3.6.1.4.1.89.122.11.1.1.1	IANAtunnelType	read-write	The encapsulation method used by the tunnel. This field added since it is read-only in standard MIB.
INT rlTunnelIfLocalAddressSource	1.3.6.1.4.1.89.122.11.1.1.2	INTEGER	read-write	Defines the method of obtaining Local address for the tunnel interface. Configured - configured by user. Automatic - minimum IP address of the device. Interface - minimum IP address on user specified interface.
U32 rlTunnelIfLocalAddressInterfaceId	1.3.6.1.4.1.89.122.11.1.1.3	Unsigned32	read-write	Interface ID, used to determine Local address for tunnel interface if rlTunnelIfLocalAddressSource set to interface.
IP rlTunnelIfLocalIPv4Address	1.3.6.1.4.1.89.122.11.1.1.4	IpAddress	read-only	Specifies the IPv4 address currently used as IPv4 Local address for IPv6 over IPv4 Tunnel.
ROW rlTunnelIfStatus	1.3.6.1.4.1.89.122.11.1.1.5	RowStatus	read-write	The status of this row, by which new entries may be created, or old entries deleted from this table.
rlTunnelTypeSpecific	1.3.6.1.4.1.89.122.12
rlTunnelIsatap	1.3.6.1.4.1.89.122.12.1
rlTunnelIsatapConfTable	1.3.6.1.4.1.89.122.12.1.1		not-accessible	This table contains ISATAP-specific configuration.
rlTunnelIsatapConfEntry	1.3.6.1.4.1.89.122.12.1.1.1		not-accessible	Additional configuration parameters for a tunnel interface.
OCT rlTunnelIsatapConfDnsName	1.3.6.1.4.1.89.122.12.1.1.1.1	OCTET STRING	read-write	DNS name.
ROW rlTunnelIsatapConfRowStatus	1.3.6.1.4.1.89.122.12.1.1.1.2	RowStatus	read-write	The status of this row, by which new entries may be created, or old entries deleted from this table.
rlTunnelIsatapPrlTable	1.3.6.1.4.1.89.122.12.1.2		not-accessible	This table contains ISATAP-specific configuration.
rlTunnelIsatapPrlEntry	1.3.6.1.4.1.89.122.12.1.2.1		not-accessible	Additional configuration parameters for a tunnel interface.
U32 rlTunnelIsatapPrlIfIndex	1.3.6.1.4.1.89.122.12.1.2.1.1	Unsigned32	read-only	The index of the interface to which this PRL entry belongs.
U32 rlTunnelIsatapPrlPriority	1.3.6.1.4.1.89.122.12.1.2.1.2	Unsigned32	read-only	The priority of the entry. Lower value - higher priority.
IP rlTunnelIsatapPrlAddress	1.3.6.1.4.1.89.122.12.1.2.1.3	IpAddress	read-only	IPv4 address of the potential router.
INT rlTunnelIsatapPrlIsActive	1.3.6.1.4.1.89.122.12.1.2.1.4	INTEGER	read-only	Whether the PRL entry is active (meaning it has an up to date RA).
U32 rlTunnelIsatapConfRSInterval	1.3.6.1.4.1.89.122.12.1.11	Unsigned32	read-write	Specifies the time interval between Router Solicitations prior to receiving the first reply from the ISATAP router.
U32 rlTunnelIsatapConfRobustness	1.3.6.1.4.1.89.122.12.1.12	Unsigned32	read-write	After a Router Advertisement was received, Router Solicitation messages are sent every Lifetime / (1 + Robustness) seconds, where Lifetime is the Lifetime advertised in the RA.
INT rlTunnelIPv6EndConfig	1.3.6.1.4.1.89.122.12.2	INTEGER	read-write	Used to indicate end of snmp configuration for IPv6. Can be removed, if mechanism for indicating end config per mib is added to SNMP.

RFC description

Dell vendor-specific MIB defining tunnel configuration and monitoring objects for VPN, IPSec, and other tunneling protocols on Dell networking devices.

Start monitoring Dell PowerConnect switch/router (GRE/IPIP/ISATAP tunnels) 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 Dell-TUNNEL-MIB

What Is Dell-TUNNEL-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description