WAN Link Failure when no traffic through it

[andy11]

Hi all,

I am using Ascenlink 5000 and I have problem :

1.I have 3 FTTH WAN PPPoE link. But the only 1 WAN Link is unstable when no traffic through it (it happened after working hours)

Thanks so much

[mac]

Please check the system log,the line Have occur up or down? the line status is connection?

the line quality is poor?