Administration: Discovery
Configuring CDP
Cisco 220 Series Smart Switches Administration Guide Release 1.1.0.x 99
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• CDP Mandatory TLVs Validation—Check Enable to discard incoming CDP
packets not containing the mandatory TLVs and the invalid error counter is
incremented.
• CDP Version—Select the version of CDP to use.
• CDP Hold Time—Select User Defined to enter the amount of time in
seconds that CDP packets are held before the packets are discarded,
measured in multiples of the TLV Advertise Interval. For example, if the TLV
Advertise Interval is 30 seconds, and the Hold Multiplier is 4, then the LLDP
packets are discarded after 120 seconds. You can also select Use Default
to use the default time (180 seconds).
• CDP Transmission Rate—Select User Defined to enter the rate in seconds
at which CDP advertisement updates are sent, or select Use Default to use
the default rate (60 seconds).
• Device ID Format—Select the format of the device ID (MAC address, serial
number, or host name).
• Source Interface—Select User Defined to use the IP address of the
interface (defined in the Interface field) in the address TLV, or select Use
Default to use the IP address of the outgoing interface.
• Interface—If User Defined was selected for Source Interface, select the
interface.
• Syslog Voice VLAN Mismatch—Check Enable to send a SYSLOG message
when a voice VLAN mismatch is detected. This means that the voice VLAN
information in the incoming frame does not match what the local device is
advertising.
• Syslog Native VLAN Mismatch—Check Enable to send a SYSLOG
message when a native VLAN mismatch is detected. This means that the
native VLAN information in the incoming frame does not match what the local
device is advertising.
• Syslog Duplex Mismatch—Check Enable to send a SYSLOG message
when duplex information is mismatched. This means that the duplex
information in the incoming frame does not match what the local device is
advertising.
STEP 3 Click Apply. The CDP properties are defined, and the Running Configuration is
updated.
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