FDP cache table

Each entry in the FDP cache table contains information received from FDP or Cisco Discovery Protocol (CDP) on one interface of one device. The table is available if FDP or CDP is enabled globally. Entries appear when an FDP or CDP advertisement is received from a neighbor device. Entries are deleted when FDP or CDP is disabled on an interface or globally.

Name, OID, and syntax

Access

Description

snFdpCache

brcdIp.1.1.3.20.1.2

    
snFdpCacheTable

brcdIp.1.1.3.20.1.2.1

None

The table for the cached information obtained via receiving FDP or CDP messages.
snFdpCacheEntry

brcdIp.1.1.3.20.1.2.1.1

Syntax: FdpCacheEntry

 None An entry in the snFdpCacheTable, having the information received via FDP or CDP on one interface from one device.

Entries appear when a FDP or CDP advertisement is received from a neighbor device.Entries disappear when FDP or CDP is disabled on the interface, or globally.
snFdpCacheIfIndex

brcdIp.1.1.3.20.1.2.1.1.1

None

Shows the ifIndex value of the local interface.

snFdpCacheDeviceIndex

brcdIp.1.1.3.20.1.2.1.1.2

Syntax: Integer32

Read-only

A unique value for each device from which FDP or CDP messages are being received.

snFdpCacheDeviceId

brcdIp.1.1.3.20.1.2.1.1.3

Syntax: DisplayString

Read-only

Shows a description for the device as reported in the most recent FDP or CDP message.

A zero-length string indicates no Device-ID field (TLV) was reported in the most recent FDP or CDP message.

snFdpCacheAddressType

brcdIp.1.1.3.20.1.2.1.1.4

Syntax: Integer

Read-only

Indicates the type of address contained in the FDP cache table object for this entry:

  • ip(1)
  • ipx(2)
snFdpCacheAddress

brcdIp.1.1.3.20.1.2.1.1.5

Syntax: Octet String

Read-only

Shows the network-layer address of the device's SNMP agent, as reported in the most recent FDP or CDP message. A device may have more than one address. This object shows the first address on the device.

The format of this object depends on the value of the snFdpCacheAddressType object:

  • ip(1) - 4 octets
  • ipx(2) - 10 octets:
    • Octets 1-4 - Network number
    • Octets 5-10 - Host number
snFdpCacheVersion

brcdIp.1.1.3.20.1.2.1.1.6

Syntax: DisplayString

Read-only

Shows the software version running in the device as reported in the most recent FDP or CDP message.

snFdpCacheDevicePort

brcdIp.1.1.3.20.1.2.1.1.7

Syntax: DisplayString

Read-only

Shows the port ID of the device as reported in the most recent FDP or CDP message. This will typically be the value of the ifName object.

A zero-length string indicates no Port-ID field (TLV) was reported in the most recent FDP or CDP message.

snFdpCachePlatform

brcdIp.1.1.3.20.1.2.1.1.8

Syntax: DisplayString

Read-only

Shows the device's hardware platform as reported in the most recent FDP or CDP message.

A zero-length string indicates that no Platform field (TLV) was reported in the most recent FDP or CDP message.

snFdpCacheCapabilities

brcdIp.1.1.3.20.1.2.1.1.9

Syntax: DisplayString

Read-only

Shows the device's functional capabilities as reported in the most recent FDP or CDP message.

snFdpCacheVendorId

brcdIp.1.1.3.20.1.2.1.1.10

Syntax: Integer

Read-only

Indicates if FDP or CDP received the entry:

  • fdp(1)
  • cdp(2)
snFdpCacheIsAggregateVlan

brcdIp.1.1.3.20.1.2.1.1.11

Syntax: Integer

Read-only

Indicates if this entry is from a neighbor device that is in an aggregated VLAN:

  • false(0) - It is not in an aggregated VLAN.
  • true(1) - It is in an aggregate VLAN.
snFdpCacheDeviceTagType

brcdIp.1.1.3.20.1.2.1.1.12

Syntax: Integer

Read-only

Shows the tag type of the neighbor device that sent this entry.

snFdpCacheDevicePortVlanMask

brcdIp.1.1.3.20.1.2.1.1.13

Syntax: Octet String

Read-only

Shows the port VLAN masks, in a 512-byte octet string, of the neighbor that sent this entry.

snFdpCachePortTagMode

brcdIp.1.1.3.20.1.2.1.1.14

Syntax: Integer

Read-only

Shows the port tag mode on the neighbor device:

  • untagged(1)
  • tagged(2)
  • dual(3)
Parent topic: FDP MIB Defintions