Cisco 8851, Administration Manual

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VLAN Settings
If you use a virtual LAN (VLAN), your phone voice packets are tagged with the VLAN ID.
In the VLAN Settings section of the
Voice
>
System
window, you can configure these settings:
• Cisco Discovery Protocol (CDP)
• LLDP-MED
• Network Startup Delay
• VLAN ID
Cisco Discovery Protocol
Cisco Discovery Protocol (CDP) is negotiation-based and determines which virtual LAN (VLAN) the Cisco
IP Phone resides in. If you are using a Cisco switch, Cisco Discovery Protocol (CDP) is available and is
enabled by default. CDP has these attributes:
• Obtains the protocol addresses of neighboring devices and discovers the platform of those devices.
• Shows information about the interfaces your router uses.
• Is media and protocol-independent.
If you are using a VLAN without CDP, you must enter a VLAN ID for the Cisco IP Phone.
LLDP-MED
The Cisco IP Phone supports Link Layer Discovery Protocol for Media Endpoint Devices (LLDP-MED) for
deployment with Cisco or other Third-Party network connectivity devices that use a Layer 2 auto discovery
mechanism. Implementation of LLDP-MED is done in accordance with IEEE 802.1AB (LLDP) Specification
of May 2005, and ANSI TIA-1057 of April 2006.
The Cisco IP Phone operates as a LLDP-MED Media End Point Class III device with direct LLDP-MED
links to Network Connectivity Devices, according to the Media Endpoint Discovery Reference Model and
Definition (ANSI TIA-1057 Section 6).
The Cisco IP Phone supports only the following limited set of Type-Length-Values (TLV) as an LLDP-MED
Media Endpoint device class III:
• Chassis ID TLV
• Port ID TLV
• Time to live TLV
• Port Description TLV
• System Name TLV
• System Capabilities TLV
• IEEE 802.3 MAC/PHY Configuration/Status TLV (for wired network only)
• LLDP-MED Capabilities TLV
Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide
46
VLAN Settings