Configuring Cdp To Advertise A Voice Vlan - HPE FlexFabric 5940 Series Configuration Manual

Step
Enter system view.
1.
Enter Layer 2 Ethernet
2.
interface view.
Configure an advertised
3.
voice VLAN ID.
(Optional.) Display the voice
4.
VLAN advertised by LLDP.

Configuring CDP to advertise a voice VLAN

If an IP phone supports CDP but does not support LLDP, it will send out CDP packets to the device to
request the voice VLAN ID. If the IP phone does not receive the voice VLAN ID within a time period,
it will send out untagged packets. The device cannot differentiate untagged voice packets from other
types of packets.
You can configure CDP compatibility on the device to enable it to perform the following operations:
•
Receive and identify CDP packets from the IP phone.
•
Send CDP packets to the IP phone. The voice VLAN information is carried in the CDP packets.
After receiving the advertised VLAN information, the IP phone performs automatic voice VLAN
configuration. Packets from the IP phone will be transmitted in the dedicated voice VLAN.
LLDP packets sent from the device carry the priority information. CDP packets sent from the device
do not carry the priority information.
Before you configure this feature, enable LLDP globally and on access ports.
To configure CDP to advertise a voice VLAN:
Step
Enter system view.
1.
Enable CDP compatibility.
2.
Enter Layer 2 Ethernet
3.
interface view.
Configure CDP-compatible
4.
LLDP to operate in TxRx
mode.
Configure an advertised
5.
voice VLAN ID.
Command
system-view
interface interface-type
interface-number
lldp tlv-enable med-tlv
network-policy vlan-id
display lldp local-information
Command
system-view
lldp compliance cdp
interface interface-type
interface-number
lldp compliance admin-status cdp
txrx
cdp voice-vlan vlan-id
201
Remarks
N/A
N/A
By default, no advertised
voice VLAN ID is configured.
For more information about
the command, see Layer
2—LAN Switching Command
Reference.
For more information about
the command, see Layer
2—LAN Switching Command
Reference.
Remarks
N/A
By default, CDP compatibility
is disabled.
N/A
CDP-compatible LLDP
operating in TxRx mode can
send and receive CDP
packets.
By default, no advertised
voice VLAN ID is configured.
For more information about
the command, see Layer
2—LAN Switching Command
Reference.