Dear James,
You can use LFM to detect errors on the link
Edit protocols oam
ethernet {
link-fault-management {
action-profile detect-loss {
event {
link-adjacency-loss;
protocol-down;
}
action {
syslog;
link-down;
send-critical-event;
}
}
interface ge-x/x/x {
apply-action-profile detect-loss
pdu-interval 50;
pdu-threshold 3;
however there's no hold-time on LFM to test the link for say 10sec in order to
render it usable again so you might need interface hold down timers for
stability
set int ge0/0/0/ hold-time up 10000 down 0
adam
>
Adam Vitkovsky
IP Engineer
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-----Original Message-----
> From: juniper-nsp [mailto:[email protected]] On Behalf
> Of james list
> Sent: Monday, October 19, 2015 3:34 PM
> To: [email protected]
> Subject: [j-nsp] Link with errors, how to fast detect ?
>
> Dear experts,
>
> I currently have a wan link between two MXs that sometimes is experiencing
> errors.
>
> I’ve on top of the link OSPF (timer 1/3) as routing protocol and I’d like to
> find
> out any possible way to exclude the link when errors are in place and below
> to the 3 seconds of the OSPF timers.
>
>
> I’ve analyzed the following:
>
> 1) BFD with OSPF but it doesn’t support hold-time (as BGP does), in
> order to avoid OSPF flapping and generate higher instability I cannot use it
>
> 2) RPM event based script: probe interval is currently not below of 1
> second, hence to detect results with no false positive I need some sampling
> and we’re still at 3 seconds or more
>
> Any other possible options ?
>
> OAM ? does it support hold-time ?
>
>
> Cheers
>
> James
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