I have a Cloud Core Router with v6.1 RouterOs. It has defined a PPPoE client, add-default-route to yes and masquerade to out interface.
I can ping the router from any device connected to the internet but when i ping from the Mikrotik console to my router connected to providers (Juniper M20), ping sometimes works and sometimes doesn't.
The PPPoE server is a cisco 7206VXR router (previously an Imagestream). The initial configuration that was working in the Mikrotik had two WAN connections, one for hotspot clients and the other one for the office. This worked for 2 weeks without problems but one day stopped working. I deleted one of the connection with this one and sometimes i have this problem .
What could be the cause? Any suggestion?
Here is a picture showing the network scheme
The PPPoE session is always up, and the rest of the clients have normal behavior but the mikrotik router sometimes can ping to Router_2 and sometimes can't. We have changed the router for a new one and the problem persists. We have a radio link to the location where the mikrotik is and another PPPoE session with another router (Linksys) working without this issue at the same place... but the radio link has two ethernet interfaces acting as switch, one for each ppp client. So we suspect it could be the radio link if network configuration seems to be correct...