since a few weeks we use a Cisoc 871 router in our company. Everything seems to work fine, except that the LAN interface is sometimes dropped. What happens is the following:
1) The router is not reachable anymore (by ping) and the LED of the FastEthernet0 interface is off.
2) The Rxd LED of the WAN interface is constantly on, while the Txd LED is off.
This behavior comes out of a sudden. After a short time, the router starts to work fine again.
Does anyone of you know this behavior? And maybe even how this can be solved?