Modify UP and DOWN interface time in HP5900 switch

[ivan_ra]

Hi,

I have an issue.

I have an HP5900 switches connected directly, via 1GB optical link, to a trasmission network element. Some times happen that, due to radio instability, the optical link is interrupted for 19 mmsec. MY HP SWITCHES detecte immediately link down and shut-off all the OSPF instance. After 19 mmsec the interface came up and the HP 5900 put back in service also the OSPF

is it possible modify the UP and DOWN interface timer? I would like that the HP SW5900 take actions only if the interuption is hugher of 50 mms, And if this happen, verify the link stability for 2 secs before to put it in service.

Thanks

[Ivan_B]

Hi @ivan_ra !

link-delay

Use link-delay to set the physical state change suppression interval on an Ethernet interface.
Use undo link-delay to restore the default.

Syntax
link-delay [ msec ] delay-time [ mode { up | updown } ]
undo link-delay

Default
Each time the physical link of a port goes up or comes down, the interface immediately reports the change to the CPU.

Views
Ethernet interface view
Predefined user roles
network-admin

Parameters
msec: Enables the physical state change suppression interval to be accurate to milliseconds. If you do not specify this keyword, the suppression interval is accurate to seconds.
delay-time: Sets the physical state change suppression interval on the Ethernet interface. A value of 0 indicates that physical state changes are immediately reported to the CPU and are not suppressed.
• If you do not specify the msec keyword, the value range for this argument is 0 to 30 seconds.
• If you specify the msec keyword, the value range for this argument is 0 to 10000 milliseconds, and the value must be a multiple of 100.
mode up: Suppresses the link-up events.
mode updown: Suppresses both the link-up and link-down events.

Usage guidelines
When the link-delay delay-time command is configured:
• The link-down event is not reported to the CPU unless the interface is still down when the
suppression interval (delay-time) expires.
• The link-up event is immediately reported.
When the link-delay delay-time mode up command is configured:
• The link-up event is not reported to the CPU unless the interface is still up when the
suppression interval (delay-time) expires.
• The link-down event is immediately reported.
When the link-delay delay-time mode updown command is configured:
• The link-down event is not reported to the CPU unless the interface is still down when the
suppression interval (delay-time) expires.
• The link-up event is not reported to the CPU unless the interface is still up when the
suppression interval (delay-time) expires.
On a port, if you configure the link-delay command multiple times, the most recent configuration
takes effect.
Do not configure this command on a port with RRPP, spanning tree protocols, or Smart Link enabled.

Examples
# Set the link-down event suppression interval to 8 seconds on Ten-GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] link-delay 8
# Set the link-up event suppression interval to 800 milliseconds on Ten-GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] link-delay msec 800 mode up

Hope this helps!