hello folks,
i recently configured an 891 router for a client and it worked very well, but less than 90 days, i got a call from the client that the internet speed has greatly reduced, i went there and it was true.
i decided to isolate the isp ONT box from the infrastructure, i tested the speed of the internet direct and it was very fast and the same value with what the isp provides, i used a different router (fortigate) and it worked very fine with the same speed given by the isp, i connected the network infrastructure with the fortigate router and the internet was very fine and all the users were happy.
i decided to reset the router and re configured it again but as soon as i connected it back to the network, the speed reduced again more than quater of the speed supplied by the ISP, so it became obvious that the fault is from the router.
this are the parameters i configured:
PPPOE on a dialer interface, added to the GI0/0 int
SVI for the L2 switched ports so that i could assign ip address to it
dhcp to give the host ip address
no security because i was using the fortigate firewall
is there anything i am oversighting or it is just the router that is bad?
suggestions please.
