Cisco SPA50X User Manual page 51

Using the Phone Web User Interface
Setting Voice System Parameters
Cisco Small Business SPA50X and SPA51X Series SPCP IP Phone User Guide
Parameter Description
Enable VLAN
Choose
Enable CDP Enable CDP only if you are using a switch that has Cisco
Discovery Protocol (CDP). CDP is negotiation-based and
determines which VLAN the IP phone resides in.
Enable LLDP- Choose yes to enable LLDP-MED for the phone to advertise
MED itself to devices that use that discovery protocol. (By
default, this setting is enabled.)
When the LLDP-MED feature is enabled, after the phone has
initialized and Layer 2 connectivity is established, the
phone sends out LLDP-MED PDU frames. If the phone
receives no acknowledgment, the manually configured
VLAN or default VLAN is used if applicable. If CDP is used
concurrently, a waiting period of 6 seconds is used. The
waiting period increases the overall startup time for the
phone.
Network Startup Enter the delay in seconds for the switch to get to the
Delay forwarding state before the phone sends out the first LLDP-
MED packet. The default delay is 3 seconds. For
configuration of some switches, it might be necessary to
increase this value to a higher value for LLDP-MED to work.
Configuring a delay can be important for networks that use
Spanning Tree Protocol.
VLAN ID A value ranging from 0 to 4095 (default 0). The phone tags
all of the untagged frames coming from the PC. (It does not
tag frames with existing tags).
Asset ID Enter a string to identify the phone in inventory.
yes
to enable VLAN. Choose no to disable.
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