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Layer 2 devices over WAP54g and WET54g

Discussion in 'Networking Issues' started by bobdole369, Aug 4, 2006.

  1. bobdole369

    bobdole369 LI Guru Member

    Hi all,

    I am working on a project involving some Layer 2 devices (they are 3com NBX phones). We don't seem to be able to make them work over the wireless link which is as follows:

    Main network (private subnet 192.168.1.x) <--->WAP54G<---1000 ft of open air using directional antennas--->WET54G<--->remote network (private subnet 192.168.1.x).

    The 3com NBX NCP (the phone server) resides on the main network. All phones on the main network work perfectly fine. When a phone is on the remote network it fails to boot. It is sending layer 2 packets, the NCP seems to receive them and send its own out, but the phone never receives them and it sits and spins.

    Under normal operation the phone uses layer 2 with MAC addresses to contact the phone server get and download a firmware for the phone, once the firmware is up to date it should reboot, again contact the NCP get parameters (such as an extension), then be ready for operation.

    Will the WAP54g and WET54g combo pass Layer 2 data? I noticed a MAC cloning feature on both devices but they are both disabled.
  2. gvan

    gvan Guest

    Hi bobdole369,

    did you get this to work? we are having some what of the same problem but this is how I got it to work:

    nbx is on 192.168.1.x ---> wan port of router ---> 192.168.2.x --->wireless link <--- wet54 ---> switch and phones.

    then set static routes on the router and set ips on the phones. The only problem I have is that most of the time the main site can't hear the remote site. Its funny because it is not all the time and there are only 4 phones and one pc at the remote site. When this happens the pc can still connect to the net.

    Let me know if you have any luck.

  3. bobdole369

    bobdole369 LI Guru Member

    We actually did get this to work, but not using the Linksys devices directly. Our solution was to use a VPN link wih endpoints on either subnet: <--->(LAN) D-Link DI-804HV (WAN)<---> (WAP54G) --- Wireless link --- (WET54G) <--->(WAN) D-Link DI-804HV (LAN) <--->
  4. bobdole369

    bobdole369 LI Guru Member

    The only problem I have is that most of the time the main site can't hear the remote site.

    That occurs when latency is greater than 250ms. Each phone needs 64 kbits/sec to operate, but if the latency of that link is higher than 250ms then the NBXset drops the packets. I'm VERY interested in your equipment, as we haven't had any success using just the Linksys devices directly. I had taken it to mean the Linksys stuff was dropping the non-standard packets. (its IP protocol type 0x8868, not TCP or UDP).

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