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Configuration procedure
1.
Configure a voice VLAN on Switch A:
# Create VLAN 2.
<SwitchA> system-view
[SwitchA] vlan 2
[SwitchA-vlan2] quit
# Set the link type of GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 to trunk, and enable voice
VLAN on them.
[SwitchA] interface gigabitethernet 1/0/1
[SwitchA-GigabitEthernet1/0/1] port link-type trunk
[SwitchA-GigabitEthernet1/0/1] voice vlan 2 enable
[SwitchA-GigabitEthernet1/0/1] quit
[SwitchA] interface gigabitethernet 1/0/2
[SwitchA-GigabitEthernet1/0/2] port link-type trunk
[SwitchA-GigabitEthernet1/0/2] voice vlan 2 enable
[SwitchA-GigabitEthernet1/0/2] quit
2.
Configure CDP-compatible LLDP on Switch A:
# Enable LLDP globally, and enable CDP compatibility globally.
[SwitchA] lldp global enable
[SwitchA] lldp compliance cdp
# Enable LLDP on GigabitEthernet 1/0/1. By default, LLDP is enabled on ports.
[SwitchA] interface gigabitethernet 1/0/1
[SwitchA-GigabitEthernet1/0/1] lldp enable
# Configure LLDP to operate in TxRx mode on GigabitEthernet 1/0/1.
[SwitchA-GigabitEthernet1/0/1] lldp admin-status txrx
# Configure CDP-compatible LLDP to operate in TxRx mode on GigabitEthernet 1/0/1.
[SwitchA-GigabitEthernet1/0/1] lldp compliance admin-status cdp txrx
[SwitchA-GigabitEthernet1/0/1] quit
# Enable LLDP on GigabitEthernet 1/0/2. By default, LLDP is enabled on ports.
[SwitchA] interface gigabitethernet 1/0/2
[SwitchA-GigabitEthernet1/0/2] lldp enable
# Configure LLDP to operate in TxRx mode on GigabitEthernet 1/0/2.
[SwitchA-GigabitEthernet1/0/2] lldp admin-status txrx
# Configure CDP-compatible LLDP to operate in TxRx mode on GigabitEthernet 1/0/2.
[SwitchA-GigabitEthernet1/0/2] lldp compliance admin-status cdp txrx
[SwitchA-GigabitEthernet1/0/2] quit
Verifying the configuration
# Verify that Switch A has completed the following tasks:
•
Discovering the IP phones connected to GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2.
•
Obtaining IP phone information.
[SwitchA] display lldp neighbor-information
CDP neighbor-information of port 1[GigabitEthernet1/0/1]:
CDP neighbor index : 1
Chassis ID : SEP00141CBCDBFE
Port ID : Port 1