Hi

In our MD's house, we have fibre optic connection given by the ISP upto Distribution box inside the house where the fibre optic cable is connected to HUAWEI-ECHOLFIE HG865 terminal .From the RJ 45 port in that device , the ethernet cable goes to the DLINK 8 port switch. All the 8 ports are connected with ethernet cables to 8 rooms going concealed through the wall.

Our ISP person tested the connection by connecting one patch cable (from the DLINK SWITCH via the wall socket)to the WAN port of LINKSYS WRT300N wireless router and connecting other ethernet cable from the lan port of the router to the laptop ,setup the username ,password, encapsulation pppoe and configured the internet .found working.

I tried to configure the wireless in the house by fixing LINKSYS access point in some rooms.Here the problem started.

I cannot fix the LINKSYS router inside the DB in front portion of the house since there is no space in that and cannot keep the linksys router outside also,
So I kept the linksys router inside one room and connected its lan port to the wall socket inside the room and connected its WAN PORT to one of its lan port because I want to share the internet in all the rooms.

I checked the internet in all the rooms by taking one laptop to all the rooms and checked through the access point configured in each room.

After few minutes internet drops and the led's in the LINSKYS router starts continuously blinks as if there is some problem

What is the problem and how can I rectify it?

_________________
Thanks & Regards

S.Swaminathan

Hi

If I understood correctly the concept , the fault which I did is WAN port of linksys router - which is a separate broadcast domain and switch back plane of linsksys router - a separate broadcast domain are converged into a single broadcast domain.............Isn't it?

And moreover actually the same configuration which I mentioned previously has been done already by keeping the LINKSYS router outside the DB and connecting the HUAWEI to linksys WAN and connecting the linksys lan to the dlink switch on a temporary basis because LINKSYS router cannot be kept outside that is the constraint should be followed.

Now the setup is working with the scenario explained above

Please explain why the internet drops in the first setup!

_________________
Thanks & Regards

S.Swaminathan

Hi


Please help me in the theory behind the internet connection dropping in the scenario put in the first

_________________
Thanks & Regards

S.Swaminathan

I guess it's a mac thrashing problem. Gateway mac learned/relearned between different ports.

Hi Timhalo

Can you please explain to me elaborately?

_________________
Thanks & Regards

S.Swaminathan

Get a whiteboard, start asking yourself questions & draw it out.

Suffice to say there's an inconsistency between where the g/w mac is learned & where the linksys wants to forward offnet packets. Could also be a number of other problems, e.g. how will nat work in that scenario, what about the firewall?, and etc.

Lesson here: don't loop back on yourself.

Hi

This is one of the reply I got from another forum as follows


"
So you connected the WAN port on the Linksys router to one of its LAN ports? Is it giving itself an IP address, and setting itself as its default gateway? If so, as soon as something decides it should use it, you have a loop (assuming the Linksys doesn't stop this through use of its own routing table). If there is another router, jus connect your LAN ports on the linksys into the rest of the network, give it a unique IP address and disable its DHCP. This will allow it to act like a switch/AP."

But your answer is related to MAC address inconsistency .

Please advise me

_________________
Thanks & Regards

S.Swaminathan

I suppose that's possible. But you first posted about having PPPoE. So is dhcp even involved in that? I though PPP handled it. I really don't know/haven't seen it in ages.

I leaned towards mac problems because you said your leds would blink rapidly and the connectivity failed.

Your best bet to be sure is to rewire the fault & then troubleshoot it.

Hi

Thank you very much for your reply and as I told before that the problem is already sorted out by connecting the ethernet cable from HUAWEI modem directly to the WAN PORT of the LINKSYS ROUTER and extending it's LAN switch ports to the DLINK SWITCH inside the DB and in all the rooms internet is working without any problem.

I wanted to know the facts behind this problem -i.e the reason behind posting in this forum

_________________
Thanks & Regards

S.Swaminathan

Can anybody tell what is the funda behind the internet disconnection in this scenario?

_________________
Thanks & Regards

S.Swaminathan