[Voyage-linux] Routing throughput problem - Voyage 0.2pre4 on WRAP

[Edwin Whitelaw]

Sure,  I hope you see something but it's pretty straightforward.

duncan:/etc/network# cat interfaces
# Used by ifup(8) and ifdown(8). See the interfaces(5) manpage or
# /usr/share/doc/ifupdown/examples for more information.
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
        address 172.18.10.1
        netmask 255.255.255.0
        broadcast 172.18.10.255

auto wlan0
iface wlan0 inet static
        address 172.16.10.1
        netmask 255.255.255.0
        broadcast 172.16.10.255
        wireless-mode master
        wireless-essid duncan
        wireless-channel 8
        wireless-key s:XXXXXXXXXXXXX
#       up remountro

auto wlan0:1
iface wlan0:1 inet static
        address 172.17.10.1
        netmask 255.255.255.0
        broadcast 172.17.10.255

auto wlan1
iface wlan1 inet static
        address 172.17.1.25
        netmask 255.255.248.0
        broadcast 172.16.0.255
        gateway 172.17.1.1
        wireless-mode managed
        wireless-essid ldridge-ap1
        wireless-key s:XXXXXXXXXXXXX

As I noted, connection and throughput through each interface is 
excellent.  It's just when going through the host that the problem is 
evident.

Edwin

Andrew Niemantsverdriet wrote:
> Would you share you interfaces file so we can have a little more
> information.
>
> On Fri, 2006-03-17 at 11:26 -0500, Edwin Whitelaw wrote:
>   
>> I've got a WRAP running 0.2pre4 with two NL2511 cards installed (wlan0, 
>> wlan1).  wlan1 is in client mode and wlan0 set as an AP.
>>
>> Everything associates fine and I can get consistent 4+mbs indicated by 
>> iperf when talking to/from the WRAP out either interface.  However, 
>> throughput *through* the system, in one radio and out the other, is 
>> terrible varying from around 1 mbs down to the 100kbs range.
>>
>> I'm using simple routing, no tricks.  No log entries or errors to give a 
>> clue.
>>
>> I've had an almost identical setup (one radio is a CM9 in 11a managed 
>> mode) in the field for months and it works great.  The diagram below 
>> shows my test environment.
>>
>> DebianPC--copper--OrinocoAP1000/\/11b/\/\wlan1(STA)-WRAP-wlan0(AP)/\/W2K-laptop
>> 172.17.1.2                       Ch 6  172.17.1.25    172.17.10.1 Ch 11
>>
>> iperf from the PC to/from the WRAP is over 4mbs tested in either direction
>> iperf from the laptop is also over 4mbs to/from the WRAP
>> iperf from the DebianPC to the laptop is terrible :-(
>>
>> Anyone have an idea about what's causing the throughput problem?
>>
>> Thanks,
>>
>> Edwin
>>
>>     

-- 
<=+=+=+==+=+=+==+=+=+=+=+=+=+=+=>
Edwin Whitelaw, P.E.
New River Valley Unwired, LLC
2200 Lonesome Dove Dr
Christiansburg, VA 24073
540-239-0318