The lldp enable-dcn authentication command configures an authentication message for the private TLV that supports NMS automatic NE management in LLDP packets.
The undo lldp enable-dcn authentication command deletes an authentication message configured for the private TLV that supports NMS automatic NE management in LLDP packets.
This command varies in transport and router modes. For detailed differences, see Differences Between Commands in Transport and Router Modes. This topic describes the command configuration in router mode.
By default, the authentication message is configured for the private TLV that supports NMS automatic NE management in LLDP packets. For details, see Security Hardening Guide and List of Default Accounts and Default Passwords.
| Parameter | Description | Value |
|---|---|---|
| authentication-string |
Indicates the authentication message configured for the private TLV that supports NMS automatic NE management in LLDP packets. |
The value is a string of characters.
|
Usage Scenario
An NE on which NMS automatic NE management is configured encapsulates an authentication message in the private TLV that supports NMS automatic NE management in an LLDP packet before sending the LLDP packet to a downstream NE. Upon receipt of the LLDP packet, the downstream NE parses the private TLV if the downstream NE supports NMS automatic NE management. If the authentication message carried in the LLDP packet is the same as the one configured locally, NMS automatic NE management takes effect on the downstream NE.
Precautions
This command is supported only on the admin VS.
The authentication messages configured on upstream and downstream NEs must be the same. If the authentication message is changed only on the upstream NE, NMS automatic NE management does not take effect on the downstream NE.