CISCOSB-TUNNEL-MIB

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Organization: Cisco Small Business

Last Updated: 2012--0-5-

Category: Routing Protocols, Vendor: RADLAN/Cisco SB

Description: Configures and monitors IP tunnel interfaces including GRE and IPIP tunnels on Cisco Small Business devices.

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What Is CISCOSB-TUNNEL-MIB?

CISCOSB-TUNNEL-MIB (module identity rlTunnel) is a Cisco Small Business vendor-specific MIB that extends the standard TUNNEL-MIB with private configuration objects for tunnel interfaces on Cisco Small Business switches. Its rlTunnelIfTable AUGMENTS the standard tunnelIfEntry with an explicit encapsulation-method object (rlTunnelIfEncapsMethod, an IANAtunnelType) and local-address-source selection (rlTunnelIfLocalAddressSource: configured/auto/interface), while a deprecated legacy block (rlTunnelIsatapStatus, rlTunnelIsatapDnsHostName, rlTunnelIsatapRobustness) and its current replacement (rlTunnelIsatapConfTable, rlTunnelIsatapPrlTable) manage ISATAP (Intra-Site Automatic Tunnel Addressing Protocol) IPv6-over-IPv4 tunnels, including a potential-router-list table (rlTunnelIsatapPrlEntry: priority, address, active status) discovered via Router Advertisements. This makes it useful for monitoring IPv6-in-IPv4 tunnel configuration and ISATAP router-discovery state — confirming a device has an active, up-to-date router in its potential-router list — on small-business switches transitioning to IPv6. It depends on the standard TUNNEL-MIB (tunnelIfEntry) and IANAifType-MIB (IANAtunnelType) it augments, plus IF-MIB (ifIndex), and network admins configuring these tunnels can check the CISCOSB-TUNNEL-MIB MIB Browser output for current ISATAP status.

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

Cisco Small Business switches (rlTunnel/switch001 product family)

Monitoring Examples

An operator polls rlTunnelIsatapPrlTable for a given rlTunnelIsatapPrlIfIndex and reviews rlTunnelIsatapPrlIsActive per priority entry; if all entries report false(2), meaning no potential router has an up-to-date Router Advertisement, the ISATAP tunnel has effectively lost its IPv6 uplink despite the tunnel interface remaining administratively up.

What Can Be Monitored

tunnel encapsulation method and local-address-source configuration
ISATAP DNS hostname and row status
ISATAP potential-router-list entries and priority
ISATAP potential-router active/stale status
deprecated legacy ISATAP status/robustness/interval objects

Imported Objects

From CISCOSB-MIB

switch001

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	1.3.6.1.4.1.9.6.1.101.122			The private MIB module definition for Tunneling.
INT rlTunnelIsatapStatus	1.3.6.1.4.1.9.6.1.101.122.1	INTEGER	read-write	The ISATAP status.
U32 rlTunnelIsatapRobustness	1.3.6.1.4.1.9.6.1.101.122.2	Unsigned32	read-write	specifies how many DNS Querys and Router Solicitations should be sent to get the corresponding reply.
DNS rlTunnelIsatapDnsHostName	1.3.6.1.4.1.9.6.1.101.122.3	DnsName	read-write	The domain name for ISATAP.
U32 rlTunnelIsatapQueryInterval	1.3.6.1.4.1.9.6.1.101.122.4	Unsigned32	read-write	specifies the time interval between sending of DNS Queries before receiving the first reply from the DNS Server.
U32 rlTunnelIsatapRSInterval	1.3.6.1.4.1.9.6.1.101.122.5	Unsigned32	read-write	specifies the time interval between sending of Router Solicitations before receiving the first reply from the ISATAP Router.
U32 rlTunnelIsatapMinQueryInterval	1.3.6.1.4.1.9.6.1.101.122.6	Unsigned32	read-only	specifies the minimum time interval between between successive queries of same advertising ISATAP interface.
U32 rlTunnelIsatapMinRSInterval	1.3.6.1.4.1.9.6.1.101.122.7	Unsigned32	read-only	specifies the minimum time between successive solicitations of the same advertising ISATAP interface.
IP rlTunnelIsatapRouterAddress	1.3.6.1.4.1.9.6.1.101.122.8	IpAddress	read-only	specifies the IPv4 address of ISATAP Router.
IP rlTunnelIsatapLocalIPv4Address	1.3.6.1.4.1.9.6.1.101.122.9	IpAddress	read-only	specifies the IPv4 address currently used as IPv4 source address for ISATAP Tunnel.
rlTunnelGeneral	1.3.6.1.4.1.9.6.1.101.122.11
rlTunnelIfTable	1.3.6.1.4.1.9.6.1.101.122.11.1		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	1.3.6.1.4.1.9.6.1.101.122.11.1.1		not-accessible	Additional configuration parameters for a tunnel interface.
IAN rlTunnelIfEncapsMethod	1.3.6.1.4.1.9.6.1.101.122.11.1.1.1	IANAtunnelType	read-write	The encapsulation method used by the tunnel. This field added since it is read-only in standard MIB.
INT rlTunnelIfLocalAddressSource	1.3.6.1.4.1.9.6.1.101.122.11.1.1.2	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	1.3.6.1.4.1.9.6.1.101.122.11.1.1.3	Unsigned32	read-write	Interface ID, used to determine Local address for tunnel interface if rlTunnelIfLocalAddressSource set to interface.
IP rlTunnelIfLocalIPv4Address	1.3.6.1.4.1.9.6.1.101.122.11.1.1.4	IpAddress	read-only	Specifies the IPv4 address currently used as IPv4 Local address for IPv6 over IPv4 Tunnel.
ROW rlTunnelIfStatus	1.3.6.1.4.1.9.6.1.101.122.11.1.1.5	RowStatus	read-write	The status of this row, by which new entries may be created, or old entries deleted from this table.
rlTunnelTypeSpecific	1.3.6.1.4.1.9.6.1.101.122.12
rlTunnelIsatap	1.3.6.1.4.1.9.6.1.101.122.12.1
rlTunnelIsatapConfTable	1.3.6.1.4.1.9.6.1.101.122.12.1.1		not-accessible	This table contains ISATAP-specific configuration.
rlTunnelIsatapConfEntry	1.3.6.1.4.1.9.6.1.101.122.12.1.1.1		not-accessible	Additional configuration parameters for a tunnel interface.
OCT rlTunnelIsatapConfDnsName	1.3.6.1.4.1.9.6.1.101.122.12.1.1.1.1	OCTET STRING	read-write	DNS name.
ROW rlTunnelIsatapConfRowStatus	1.3.6.1.4.1.9.6.1.101.122.12.1.1.1.2	RowStatus	read-write	The status of this row, by which new entries may be created, or old entries deleted from this table.
rlTunnelIsatapPrlTable	1.3.6.1.4.1.9.6.1.101.122.12.1.2		not-accessible	This table contains ISATAP-specific configuration.
rlTunnelIsatapPrlEntry	1.3.6.1.4.1.9.6.1.101.122.12.1.2.1		not-accessible	Additional configuration parameters for a tunnel interface.
U32 rlTunnelIsatapPrlIfIndex	1.3.6.1.4.1.9.6.1.101.122.12.1.2.1.1	Unsigned32	read-only	The index of the interface to which this PRL entry belongs.
U32 rlTunnelIsatapPrlPriority	1.3.6.1.4.1.9.6.1.101.122.12.1.2.1.2	Unsigned32	read-only	The priority of the entry. Lower value - higher priority.
IP rlTunnelIsatapPrlAddress	1.3.6.1.4.1.9.6.1.101.122.12.1.2.1.3	IpAddress	read-only	IPv4 address of the potential router.
INT rlTunnelIsatapPrlIsActive	1.3.6.1.4.1.9.6.1.101.122.12.1.2.1.4	INTEGER	read-only	Whether the PRL entry is active (meaning it has an up to date RA).
U32 rlTunnelIsatapConfRSInterval	1.3.6.1.4.1.9.6.1.101.122.12.1.11	Unsigned32	read-write	Specifies the time interval between Router Solicitations prior to receiving the first reply from the ISATAP router.
U32 rlTunnelIsatapConfRobustness	1.3.6.1.4.1.9.6.1.101.122.12.1.12	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.

RFC description

Cisco Small Business vendor MIB managing IPsec and GRE tunnel configurations on small business switches.

Start monitoring Cisco Small Business switches (rlTunnel/switch001 family) 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 CISCOSB-TUNNEL-MIB

What Is CISCOSB-TUNNEL-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description