Configuring Lldp Neighbor Validation And Aging; Configuring Lldp Neighbor Validation On An Interface; Configuring Lldp Neighbor Aging On An Interface - H3C S6850 Series Configuration Manual

5. Return to system view.
quit
6. (Optional.) Set the LLDP trap transmission interval.
lldp timer notification-interval interval
The default setting is 30 seconds.

Configuring LLDP neighbor validation and aging

Configuring LLDP neighbor validation on an interface

About LLDP neighbor validation
LLDP neighbor validation enables an interface to validate the identity of the neighbor based on the
neighbor validation criteria configured on the interface. The neighbor validation criteria can be the
chassis ID TLV, port ID TLV, or both. Each incoming LLDP packet must match all the validation
criteria configured on the interface. If the neighbor information in an incoming LLDP packet does not
match the criteria, the system shuts down the data link layer and disables data transmission on the
interface.
Procedure
1. Enter system view.
system-view
2. Enter Layer 2 or Layer 3 Ethernet interface view.
interface interface-type interface-number
3. Configure the neighbor validation criteria. Choose the following tasks as needed:
Configure the chassis ID TLV criterion.
lldp neighbor-identity chassis-id chassis-id-subtype chassis-id
Configure the port ID TLV criterion.
lldp neighbor-identity port-id port-id-subtype port-id
By default, no neighbor validation criteria exist on an interface.
4. Enable LLDP neighbor validation on the interface.
lldp neighbor-protection validation
By default, LLDP neighbor validation is disabled on an interface.

Configuring LLDP neighbor aging on an interface

About LLDP neighbor aging
An LLDP neighbor aging-enabled interface ages out a neighbor if it does not receive an LLDP packet
from the neighbor within the aging time.
LLDP takes either of the following actions when neighbor aging occurs on an interface:
•
Block—Blocks the interface. The block action places the data link layer protocol of the
interface in DOWN state. In this state, the interface cannot transfer data packets. The data
transfer capability automatically recovers when the interface receives an LLDP packet.
•
Shutdown—Shuts down the interface. The shutdown action places the interface in LLDP
DOWN state. In this state, the interface can neither transfer data packets nor LLDP packets.
You must manually execute the undo lldp neighbor-protection aging or undo
shutdown command to bring up the interface.
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