Setting The Interval To Send Advertisement Packets; Setting The Delaydown Timer; Setting The Port Shutdown Mode - HPE FlexFabric 5700 Series Configuration Manual

Step
2. Enable DLDP globally.
3. Enter Layer 2 Ethernet
interface view.
4. Enable DLDP.

Setting the interval to send advertisement packets

To make sure DLDP can detect unidirectional links before network performance deteriorates, set the
advertisement interval appropriate for your network environment. As a best practice, use the default
interval.
To set the Advertisement packet sending interval:
Step
1. Enter system view.
2. Set the interval to send
Advertisement packets.

Setting the DelayDown timer

On some ports, when the Tx line fails, the port goes down and then comes up again, causing optical
signal jitters on the Rx line. To avoid this problem, when a port goes down due to a Tx failure, the
device triggers the DelayDown timer to prevent the corresponding neighbor entries from being
removed. If the port remains down when the timer expires, the device removes the DLDP neighbor
information. If the port goes up, the device takes no action.
To set the DelayDown timer:
Step
1. Enter system view.
2. Set the DelayDown timer.

Setting the port shutdown mode

On detecting a unidirectional link, the ports can be shut down in one of the following modes:
•
Auto mode—When a unidirectional link is detected, DLDP changes the DLDP port state to
Unidirectional. The unidirectional port periodically sends RecoverProbe packets. When a
correct RecoverEcho packet is received, the link is restored to a bidirectional link, and the port
state changes from Unidirectional to Bidirectional. This process is called link auto-recovery
mechanism.
•
Manual mode—When a unidirectional link is detected, DLDP does not shut down the port, and
you need to manually shut it down. When the link state is restored to Bidirectional, you must
Command
dldp global enable
interface interface-type
interface-number
dldp enable
Command
system-view
dldp interval time
Command
system-view
dldp delaydown-timer time
35
Remarks
By default, DLDP is globally
disabled.
N/A
By default, DLDP is disabled on
an interface.
Remarks
N/A
The default is 5 seconds.
Remarks
N/A
The default is 1 second.
The DelayDown timer setting
applies to all DLDP-enabled ports.