Wellfleet-GRE-MIB

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Category: VPN and Tunneling

Description: Covers GRE tunnel interfaces on Wellfleet equipment, including parameters, encapsulation settings, and traffic counters for tunneled data.

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What Is Wellfleet-GRE-MIB?

The Wellfleet-GRE-MIB is a Wellfleet Communications proprietary MIB for managing Generic Routing Encapsulation (GRE) tunnel interfaces on Wellfleet routers, a software feature area for building virtual point-to-point links across an IP backbone. It exposes tunnel configuration objects (source/destination endpoints, encapsulation settings) and counters tracking packets and bytes sent/received through each tunnel. Its monitoring role is centered on software/service status: it lets an operator confirm a configured tunnel is operationally up and actively passing traffic, and detect a silently failed tunnel by watching for stalled traffic counters despite the tunnel showing configured. There is an implicit dependency on the standard MIB-II ifTable, since each GRE tunnel is typically also represented as a logical interface. It was deployed on Wellfleet/Bay Networks routers used to build overlay or backup links between sites in enterprise WAN topologies. Engineers can download the Wellfleet-GRE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in Wellfleet-GRE-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

Wellfleet router
Bay Networks/Nortel router with GRE tunneling

Monitoring Examples

An administrator checks the tunnel configuration table to confirm the local and remote tunnel endpoint addresses match the intended topology, then polls the associated traffic counters for packets and bytes traversing the tunnel. If the counters stop incrementing while the underlying physical interface and routing table still show the path as reachable, that signals the GRE tunnel itself has silently failed even though the network layer beneath it looks healthy.

What Can Be Monitored

GRE tunnel endpoint configuration
tunnel operational state
tunneled packet/byte counters
encapsulation settings

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
IpAddress

From Wellfleet-COMMON-MIB

wfGreGroup

OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
wfGreInterfaceTable	1.3.6.1.4.1.18.3.5.3.20.1		not-accessible	Parameters in wfGreInterfaceTable
wfGreInterfaceEntry	1.3.6.1.4.1.18.3.5.3.20.1.1		not-accessible	An entry in wfGreTable.
INT wfGreIntfCreate	1.3.6.1.4.1.18.3.5.3.20.1.1.1	INTEGER	read-write	Create/Delete parameter. Default is created. Users perform a set operation on this object in order to create/delete an wfGreEntry instance.
INT wfGreIntfEnable	1.3.6.1.4.1.18.3.5.3.20.1.1.2	INTEGER	read-write	Enable/Disable parameter. Default is enabled. Users perform a set operation on this object in order to enable/disable GRE .
INT wfGreIntfState	1.3.6.1.4.1.18.3.5.3.20.1.1.3	INTEGER	read-only	The current state of GRE interface.
IP wfGreIntfIpAddr	1.3.6.1.4.1.18.3.5.3.20.1.1.4	IpAddress	read-only	The IP interface to run GRE on.
INT wfGreIntfCct	1.3.6.1.4.1.18.3.5.3.20.1.1.5	INTEGER	read-only	Circuit number of the GRE interface
INT wfGreIntfStatsEnable	1.3.6.1.4.1.18.3.5.3.20.1.1.6	INTEGER	read-write	Enable/Disable parameter. Default is enabled. Users perform a set operation on this object in order to enable/disable mib statistics for GRE interface.
INT wfGreIntfDebugLevel	1.3.6.1.4.1.18.3.5.3.20.1.1.7	INTEGER	read-write	A parameter to specify which messages to be printed in to the log.
wfGreTunnelTable	1.3.6.1.4.1.18.3.5.3.20.2		not-accessible	Parameters in wfGreTunnelTable
wfGreTunnelEntry	1.3.6.1.4.1.18.3.5.3.20.2.1		not-accessible	An entry in wfGreTunnelTable.
IP wfGreTunnelLocalAddr	1.3.6.1.4.1.18.3.5.3.20.2.1.1	IpAddress	read-only	IP Address of local interface.
INT wfGreTunnelLocalIndex	1.3.6.1.4.1.18.3.5.3.20.2.1.2	INTEGER	read-only	This tunnel index is assigned by the GRE process. It is used to index into the GRE mapping table.
INT wfGreTunnelType	1.3.6.1.4.1.18.3.5.3.20.2.1.3	INTEGER	read-only	Indicate whether a tunnel peer has assigned a tunnel ID.
INT wfGreTunnelId	1.3.6.1.4.1.18.3.5.3.20.2.1.4	INTEGER	read-only	This tunnel ID is assigned by the tunnel peer.
IP wfGreTunnelPeerAddress	1.3.6.1.4.1.18.3.5.3.20.2.1.5	IpAddress	read-only	Address of the tunnel peer.
OCT wfGreRemotePayloadAddress	1.3.6.1.4.1.18.3.5.3.20.2.1.6	OCTET STRING	read-only	The address of the remote node.
INT wfGreTunnelState	1.3.6.1.4.1.18.3.5.3.20.2.1.7	INTEGER	read-only	The state of the GRE tunnel.
INT wfGreVersion	1.3.6.1.4.1.18.3.5.3.20.2.1.8	INTEGER	read-only	Reserved for future use
OCT wfGreProtoMap	1.3.6.1.4.1.18.3.5.3.20.2.1.9	OCTET STRING	read-only	This will be set to the protocol type of the payload. GRE_PROTO_IP 1 GRE_PROTO_IPX 2
CTR wfGreTunnelPktsTx	1.3.6.1.4.1.18.3.5.3.20.2.1.10	Counter	read-only	Number of packets transmitted
CTR wfGreTunnelPktsRx	1.3.6.1.4.1.18.3.5.3.20.2.1.11	Counter	read-only	Number of packets received
CTR wfGreTunnelBytesTx	1.3.6.1.4.1.18.3.5.3.20.2.1.12	Counter	read-only	Number of bytes transmitted
CTR wfGreTunnelBytesRx	1.3.6.1.4.1.18.3.5.3.20.2.1.13	Counter	read-only	Number of bytes received
CTR wfGreTunnelPktsTxDropped	1.3.6.1.4.1.18.3.5.3.20.2.1.14	Counter	read-only	Number of outgoing packets dropped
CTR wfGreTunnelPktsRxDropped	1.3.6.1.4.1.18.3.5.3.20.2.1.15	Counter	read-only	Number of incoming packets dropped
CTR wfGreTunnelXsumErr	1.3.6.1.4.1.18.3.5.3.20.2.1.16	Counter	read-only	Number of inbound checksum errors
CTR wfGreTunnelSeqNumErr	1.3.6.1.4.1.18.3.5.3.20.2.1.17	Counter	read-only	Number of sequence errors
INT wfGreTunnelMtu	1.3.6.1.4.1.18.3.5.3.20.2.1.18	INTEGER	read-only	The MTU of the GRE tunnel

RFC description

Manages Wellfleet GRE tunnel interface parameters, encapsulation settings, and tunneled traffic counters.

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Download Wellfleet-GRE-MIB

What Is Wellfleet-GRE-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description