Configuration Prerequisites; Configuring Cdp Compatibility; Configuring Lldp Trapping - H3C LS-3100-52P-OVS-H3 Operation Manual

TLV for the IP phones to configure the voice VLAN automatically. Thus, the voice traffic is confined in
the configured voice VLAN to be differentiated from other types of traffic.
CDP-compatible LLDP operates in one of the follows two modes:
TxRx where CDP packets can be transmitted and received.
Disable where CDP packets can neither be transmitted nor be received.

Configuration Prerequisites

Before configuring CDP compatibility, make sure that:
LLDP is enabled globally.
LLDP is enabled on the port connected to an IP phone and is configured to operate in TxRx mode
on the port.

Configuring CDP Compatibility

Follow these steps to enable LLDP to be compatible with CDP:
To do...
Enter system view
Enable CDP compatibility
globally
Enter Ethernet
interface view
or port group
view
Configure CDP-compatible
LLDP to operate in TxRx mode
As the maximum TTL allowed by CDP is 255 seconds, your TTL configuration, that is, the product of the
TTL multiplier and the LLDPDU sending interval, must be less than 255 seconds for CDP-compatible
LLDP to work properly with Cisco IP phones.

Configuring LLDP Trapping

LLDP trapping is used to notify NMS of the events such as new neighboring devices detected and link
malfunctions.
LLDP traps are sent periodically and you can set the interval to send LLDP traps. In response to
topology changes detected, a device sends LLDP traps according to the interval configured to inform
the neighboring devices of the changes.
Use the command...
system-view
lldp compliance cdp
Enter
interface interface-type
Ethernet
interface-number
interface view
Enter port
port-group manual
group view port-group-name
lldp compliance
admin-status cdp txrx
—
Required
Disabled by default.
Required
Use either command.
Configuration performed in Ethernet
interface view applies to the current
port only; configuration performed in
port group view applies to all the
ports in the port group.
Required
By default, CDP-compatible LLDP
operates in disable mode.
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