Cisco 500 Series Administration Manual page 288

VLAN Management
Voice VLAN
STEP 3
Cisco 500 Series Stackable Managed Switch Administration Guide
- Static—User-defined voice VLAN configuration defined on the device.
- CDP—UC that advertised voice VLAN configuration is running CDP.
- LLDP—UC that advertised voice VLAN configuration is running LLDP.
- Voice VLAN ID—The identifier of the advertised or configured voice
VLAN
• Voice VLAN ID—The identifier of the current voice VLAN.
• CoS/802.1p—The advertised or configured CoS/802.1p values that are
used by the LLDP-MED as a voice network policy.
• DSCP—The advertised or configured DSCP values that are used by the
LLDP-MED as a voice network policy.
• Best Local Source—Displays whether this voice VLAN was used by the
device. The following options are available:
- Yes—The device uses this voice VLAN to synchronize with other Auto
Voice VLAN-enabled switches. This voice VLAN is the voice VLAN for the
network unless a voice VLAN from a higher priority source is discovered.
Only one local source is the best local source.
- No—This is not the best local source.
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Telephony OUI
OUIs are assigned by the Institute of Electrical and Electronics Engineers,
Incorporated (IEEE) Registration Authority. Since the number of IP phone
manufacturers is limited and well-known, the known OUI values cause the relevant
frames, and the port on which they are seen, to be automatically assigned to a
Voice VLAN.
The OUI Global table can hold up to 128 OUIs.
This section covers the following topics:
• Telephony OUI Table
• Telephone OUI Interface
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