Product: Quantum Spark 1570
OS : R81.10.10
Issue :
There is a Quantum Spark 1570 Gateway, It's WAN Port to connected Point to point link (25MB) it's connected to Head office. DNS & PABX services getting from Head office. Internet also have this link.
DMZ Port to connected 1G Internet link all users internet getting from using this link. Default route created for the this link side.
The issue is time to time these links are down after a few minutes it's getting normal. but the internet is not disconnected it's effected by Voice.
Notifications are shown as below,
That time Internet side links are showing like this.
Routing is configured like this
Both Links were also checked with the ISP, and they said there were no any issues with the links.
Please give a solution for this one.