Set all to Auto Neg and no change
Here is SSH report
XM.v5.2# /bin/ifconfig
ath0      Link encap:Ethernet  HWaddr 00:15:6D:60:92:85
          UP BROADCAST RUNNING PROMISC ALLMULTI MULTICAST  MTU:1500  Metric:1
          RX packets:965042 errors:0 dropped:0 overruns:0 frame:0
          TX packets:713224 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:200
          RX bytes:1138023050 (1.0 GiB)  TX bytes:100227281 (95.5 MiB)

br0       Link encap:Ethernet  HWaddr 00:15:6D:60:92:85
          inet addr:10.10.2.179  Bcast:10.10.2.183  Mask:255.255.255.248
          UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1500  Metric:1
          RX packets:7089 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7162 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1499867 (1.4 MiB)  TX bytes:3939545 (3.7 MiB)

br0:0     Link encap:Ethernet  HWaddr 00:15:6D:60:92:85
          inet addr:169.254.146.133  Bcast:169.254.255.255  Mask:255.255.0.0
          UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1500  Metric:1

eth0_real Link encap:Ethernet  HWaddr 00:15:6D:61:92:85
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:708537 errors:0 dropped:0 overruns:0 frame:0
          TX packets:959167 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500
          RX bytes:96555669 (92.0 MiB)  TX bytes:1136564610 (1.0 GiB)

Steve Barnes
Manager
PCS-WIN
RC-WiFi Wireless Internet Service

> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> On Behalf Of Faisal Imtiaz
> Sent: Tuesday, September 07, 2010 7:31 PM
> To: WISPA General List
> Subject: Re: [WISPA] PowerBridge 5M
> 
> What is the Firmware you are running on the PowerBridges ?
> and what are the signal levels... on Chain 0 / Chain 1
> 
> ..Also Make sure the MTU / L2MTU on the Mikrotik are 1500/1524
> 
> Try to auto negotiation on the ports on both the Mikrotik & PBM5
> 
> also, ssh into the PBM5 & use /bin/ifconfig command to see if there are any
> errors on the Ethernet Port and duplex mismatch ?
> 
> 
> Faisal Imtiaz
> Snappy Internet & Telecom
> 7266 SW 48 Street
> Miami, Fl 33155
> Tel: 305 663 5518 x 232
> Helpdesk: 305 663 5518 option 2 Email: [email protected]
> 
> On 9/7/2010 6:44 PM, Steve Barnes wrote:
> > I changed out a StarOS backhaul with a pair of PowerBridge 5M radios, 4
> > mile link.  I Have an odd issue. The link is perfect 130MB 99% Airmax.
> > UBNT Speed test from radio to radio is 84Mb.  Now the interesting issue,
> > both radios are plugged in to MT 493AH 4.11 OS.  Running MT Bandwidth
> > test from MT to MT  TCP speeds are horrible.  14 Mb Dn and 6 Mb Upload.
> > We tried all kinds of tests finally realized (after the climber was on
> > the ground and in my office) that if I do a speed test from the
> > PowerBridge station to a Rocket plugged into the same Mikrotik that I
> > get 14 Mb x 6 Mb through a 100% wired connection (UBNT to Port-2 MT,
> > Port-6 to UBNT Rocket)  We had tried different ports to no avail and I
> > test from MT AP thru MT 493AH to 2^nd MT AP and I got 50 Mb x 50Mb.
> > Then I realized that 2 hops across the wireless link I had a
> > NanoBridge.  A test to that across the wireless side of the link gave me
> > a 30 Mb x 35Mb.  So it come down to a single PowerBridge radio that
> > either has a bad ethernet port  or a bad POE/cable between the UBNT and
> > MT, or some kind of incompatibility between the MT and PowerBridge.  All
> > ports are set to 100Mb FDX not Auto negotiate.  This MT 493AH is
> > relatively new with Gig option. When running speed test there are no
> > ethernet errors or packet errors on the MT.
> >
> > What else can I check from the ground.  Unit is 250 ft up and requires a
> > climber I don’t have daily access to.
> >
> > Will the PowerBridge 5M work with 12-15 Volt.  I know it wants 24VDC I
> > don’t currently have that on this tower but had no issue with others on
> > different towers at 12 V
> >
> > Steve Barnes
> >
> > RC-WiFi Wireless Internet Service
> >
> >
> >
> >
> >
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