# CDP Cache 1

Device > Configure > Cisco Discovery Protocol > Cache 1

This dialog box provides CDP configuration information for the device. CDP is a device discovery protocol that runs on routers, bridges, WBU switches, communication servers and more. Each device periodically sends messages to a multicast address. These messages advertise information about that device, such as name, capabilities, the interface and network address the device is connected to, and the version of IOS software that it is running. This information will be picked up by any other router(s) on the same medium which are listening for CDP advertisements.

To view the definition for a particular MIB variable, click the appropriate link from the following list:

- Appliance ID (cdpCacheApplianceID)

- VLAN ID (cdpCacheVlanID)

- Power Consumption (cdpCachePowerConsumption)

- MTU (cdpCacheMTU)

- Primary Mgmt Address Type (cdpCachePrimaryMgmtAddrType)

- Primary Mgmt Address (cdpCachePrimaryMgmtAddr)

- Secondary Mgmt Address Type (cdpCacheSecondaryMgmtAddrType)

- Secondary Mgmt Address (cdpCacheSecondaryMgmtAddr)

- Cache Last Change (cdpCacheLastChange)

- Location (cdpCachePhysLocation)

- SysName (cdpCacheSysName)

- System Object ID (cdpCacheSysObjectID)

- Global Last Change (cdpGlobalLastChange)

The following list specifies buttons in this dialog box, as well as their function:

- Click OK to continue.

- Click Apply to make changes take effect.

- Click Cancel to close the dialog box.

- Click Refresh to reload the dialog box.

- Click Print to print the contents of the dialog box.

- Click Help to access the online help.

Appliance ID (cdpCacheApplianceID)

Remote device's appliance ID as reported in the most recent CDP message.

VLAN ID (cdpCacheVlanID)

Remote device's VoIP VLAN ID as reported in the most recent CDP message.

Power Consumption (cdpCachePowerConsumption)

Amount of power consumed by a remote device as reported in the most recent CDP message.

MTU (cdpCacheMTU)

Indicates the size of the largest datagram that can be sent/received by a remote device as reported in the most recent CDP message.

Primary Mgmt Address Type (cdpCachePrimaryMgmtAddrType)

Type of address contained in the corrosponding instance of cdpCachePrimaryMgmtAddress.

Primary Mgmt Address (cdpCachePrimaryMgmtAddr)

Alternate network layer address (other than the one indicated by cdpCachePrimaryMgmtAddr) at which the device will accept SNMP messages as reported in the most recent CDP message.

Secondary Mgmt Address Type (cdpCacheSecondaryMgmtAddrType)

Type of address contained in the corrosponding instance of cdpCacheSecindaryMgmtAddress.

Secondary Mgmt Address (cdpCacheSecondaryMgmtAddr)

Alternate network layer address (other than the one indicated by cdpCacheSecondaryMgmtAddr) at which the device will accept SNMP messages as reported in the most recent CDP message.

Cache Last Change (cdpCacheLastChange)

Indicates the time when this cache entry was last changed.

Location (cdpCachePhysLocation)

Indicates the physical location as reported by the most recent CDP message.

SysName (cdpCacheSysName)

Indicates the value of the remote device's sysName MIB object.

System Object ID (cdpCacheSysObjectID)

Indicates the value of the remote device's sysObjectID MIB object.

Global Last Change (cdpGlobalLastChange)

Indicates the time when the cache table was last changed.