ALVARION-CDP-MIB

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Organization: Alvarion Ltd.

Last Updated: 2007-10-31

Category: Vendor: Alvarion

Description: Alvarion wireless device CDP MIB for managing Cisco Discovery Protocol neighbor discovery on Alvarion equipment.

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What Is ALVARION-CDP-MIB?

ALVARION-CDP-MIB is a vendor enterprise MIB from Alvarion implementing support for Cisco Discovery Protocol (CDP) neighbor information on Alvarion wireless equipment, allowing it to participate in mixed-vendor topology discovery. It exposes a CDP cache table listing discovered neighbor devices with their local interface, network address, device ID, platform, capabilities, port ID, and advertisement time-to-live, plus a global CDP advertisement message interval setting. Its monitoring value is topology and neighbor-health visibility: an admin can confirm which directly-connected devices (including non-Alvarion, Cisco-capable neighbors) are visible, detect stale entries (TTL expiring) indicating a lost or misconfigured link, and verify the CDP message interval is set consistently across the network. It is explicitly modeled on the Cisco-originated CDP protocol rather than an IETF standard. It is deployed on Alvarion wireless equipment operating in networks with mixed Cisco/Alvarion gear where Layer 2 neighbor discovery is needed. Engineers can download the ALVARION-CDP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ALVARION-CDP-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

Alvarion wireless base station/access equipment

Monitoring Examples

An operator walks coCdpCacheTable/coCdpCacheEntry keyed by coCdpCacheDeviceIndex to see coCdpCacheDeviceId, coCdpCachePlatform, and coCdpCachePortId for each neighbor on a given coCdpCacheLocalInterface, confirming expected topology. A neighbor entry that disappears or whose coCdpCacheTimeToLive is about to expire signals a lost CDP advertisement, which often correlates with a link or software fault on that port. coCdpGlobalMessageInterval lets an admin confirm the local device's advertisement frequency matches the network-wide CDP timing convention.

What Can Be Monitored

discovered neighbor device ID and platform
neighbor capabilities
local interface to neighbor mapping
CDP entry time-to-live
CDP advertisement interval

Imported Objects

From ALVARION-SMI

alvarionMgmtV2

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress

OIDs

OID symbolic	OID numeric	Type	Access	Description
alvarionCdpMIB	1.3.6.1.4.1.12394.1.10.5.9			Alvarion CDP MIB.
alvarionCdpMIBObjects	1.3.6.1.4.1.12394.1.10.5.9.1
coCdpCache	1.3.6.1.4.1.12394.1.10.5.9.1.1
coCdpCacheTable	1.3.6.1.4.1.12394.1.10.5.9.1.1.1		not-accessible	The (conceptual) table containing the cached information obtained from CDP messages. In tabular form to allow multiple instances on an agent. This table applies to access controllers only.
coCdpCacheEntry	1.3.6.1.4.1.12394.1.10.5.9.1.1.1.1		not-accessible	An entry (conceptual row) in the coCdpCacheTable. A row contains the information received via CDP on one interface from one device. Entries appear when a CDP advertisement is received from a neighbor device. coCdpCacheDeviceIndex - Uniquely identify a device inside the CDP table.
I32 coCdpCacheDeviceIndex	1.3.6.1.4.1.12394.1.10.5.9.1.1.1.1.1	Integer32	not-accessible	A unique value for each device from which CDP messages are received.
STR coCdpCacheLocalInterface	1.3.6.1.4.1.12394.1.10.5.9.1.1.1.1.2	DisplayString	read-only	Indicates the name of the interface that received the CDP message.
MAC coCdpCacheAddress	1.3.6.1.4.1.12394.1.10.5.9.1.1.1.1.3	MacAddress	read-only	Indicates the Ethernet address of the device that sent the CDP message.
STR coCdpCacheDeviceId	1.3.6.1.4.1.12394.1.10.5.9.1.1.1.1.4	DisplayString	read-only	Indicates the Device-ID string as reported in the most recent CDP message. A zero-length string indicates that no Device-ID field (TLV) was reported in the most recent CDP message.
U32 coCdpCacheTimeToLive	1.3.6.1.4.1.12394.1.10.5.9.1.1.1.1.5	Unsigned32	read-only	Indicates the number of seconds to keep the remote device in the cache table after receiving the CDP message.
STR coCdpCacheCapabilities	1.3.6.1.4.1.12394.1.10.5.9.1.1.1.1.6	DisplayString	read-only	Indicates the device's functional capabilities as reported in the most recent CDP message. Possible values are: R - layer 3 router T - a layer 2 transparent bridge B - a layer 2 source-root bridge S - a layer 2 switch (non-spanning tree) r - a layer 3 (non routing) host I - does not forward IGMP Packets to non-routers H - a layer 1 repeater A zero-length string indicates no Capabilities field (TLV) was reported in the most recent CDP message.
STR coCdpCacheVersion	1.3.6.1.4.1.12394.1.10.5.9.1.1.1.1.7	DisplayString	read-only	Indicates the Version string as reported in the most recent CDP message. A zero-length string indicates no Version field (TLV) was reported in the most recent CDP message.
STR coCdpCachePlatform	1.3.6.1.4.1.12394.1.10.5.9.1.1.1.1.8	DisplayString	read-only	Indicates the Device's Hardware Platform as reported in the most recent CDP message. A zero-length string indicates that no Platform field (TLV) was reported in the most recent CDP message.
STR coCdpCachePortId	1.3.6.1.4.1.12394.1.10.5.9.1.1.1.1.9	DisplayString	read-only	Indicates the Port-ID string as reported in the most recent CDP message. This will typically be the value of the ifName object (e.g., 'Ethernet0'). A zero-length string indicates no Port-ID field (TLV) was reported in the most recent CDP message.
coCdpGlobal	1.3.6.1.4.1.12394.1.10.5.9.1.2
I32 coCdpGlobalMessageInterval	1.3.6.1.4.1.12394.1.10.5.9.1.2.1	Integer32	read-write	Specifies the interval at which CDP messages will be generated.
I32 coCdpGlobalHoldTime	1.3.6.1.4.1.12394.1.10.5.9.1.2.2	Integer32	read-write	Specifies the amount of time the receiving device holds CDP messages.
alvarionCdpMIBConformance	1.3.6.1.4.1.12394.1.10.5.9.2
alvarionCdpMIBCompliances	1.3.6.1.4.1.12394.1.10.5.9.2.1
alvarionCdpMIBCompliance	1.3.6.1.4.1.12394.1.10.5.9.2.1.1			The compliance statement for the CDP MIB.
alvarionCdpMIBGroups	1.3.6.1.4.1.12394.1.10.5.9.2.2
alvarionCdpMIBGroup	1.3.6.1.4.1.12394.1.10.5.9.2.2.1			A collection of objects for use with CDP.

RFC description

Cisco Discovery Protocol neighbor information for Alvarion access controllers.

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Download ALVARION-CDP-MIB

What Is ALVARION-CDP-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description