Here I have two NanostationM5s as a backhaul. On one end (the router end of the link) the NSM5 is wired to a PS2 via their secondary ethernet ports. If I put that NS5M in 100Mbps full dup it works fine, but the PS2 it's connected to doesn't offer (via the GUI) the option of forcing the ethernet port speed/duplex so I'm assuming that the PS2 is doing auto-mdx effectively crossing over the TX/RX. On the other end I have the other NSM5 wired (via it's secondary ethernet port) to a BulletM2. If I put both of those into 100Mbps full dup it dies. If only one or the other is forced 100Mbps full dup while the other is auto-negotiate it's fine. With UBNT to UBNT I think it's just the auto-mdx cross over issue.
Greg On Jun 5, 2010, at 9:19 PM, Kevin Sullivan wrote: > Actually, I've been running into a very similar issue. We have a customer > who has a Nanobridge M5 plugged into a Cisco router. It mostly doesn't work > with auto negotiation, (90+% packet loss), and it doesn't work at all on > 100mbps full forced. It workes great at 10full forced on both ends, but > obviously at lower speeds. We just hooked up a temp customer who also had a > Cisco router, and had exactly the same deal, except they were into a Rocket > M5. We wound up putting a switch between the Cisco and the Rocket to be able > to talk at 100mbps. I'm starting to wonder if the forced 100full setting is > broken. > > Kevin > > ----- Original Message ----- > From: "Robert West" <robert.w...@just-micro.com> > To: "'WISPA General List'" <wireless@wispa.org> > Sent: Saturday, June 05, 2010 5:04 PM > Subject: Re: [WISPA] BulletM2 and NanostationM5 won't talk on ethernetwhen > forced to 100Mbps full duplex > > >> If need be, since you have low supply of connectors, if you have any bad >> patch cables, cut, cross the tx/rx and splice it just to test. Any true >> wire geek never throws bad patch away. >> >> :) >> >> Bob- >> >> >> >> -----Original Message----- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >> Behalf Of Greg Ihnen >> Sent: Saturday, June 05, 2010 7:22 PM >> To: WISPA General List >> Subject: Re: [WISPA] BulletM2 and NanostationM5 won't talk on ethernet >> when >> forced to 100Mbps full duplex >> >> I'm going to try that when I find one. I have one here somewhere but >> haven't >> found it yet. I could make one but I don't have many RJ45s and since I'm >> in >> the jungle I don't want to blow them on something that's not a necessity. >> I >> do believe if I had the cross over cable then I could force the speed and >> duplex if I wanted to. I was doing it more as a diagnostic tool (I don't >> have a cable tester). But it does seem like the problem I was having was >> just a loose connection as having reseated them seems to have fixed the >> problem. I've been running an extended ping session from one end of the >> network to the other (I'm up to over 2300 packets) and still not one lost. >> >> Greg >> On Jun 5, 2010, at 6:44 PM, RickG wrote: >> >>> Did a crossover cable fix it? >>> http://ubnt.com/forum/showthread.php?t=18882 >>> >>> >>> On Sat, Jun 5, 2010 at 5:56 PM, Greg Ihnen <os10ru...@gmail.com> wrote: >>>> Actually no. Turns out that's the port that has nothing else but the POE >> injector connected. The search goes on. >>>> >>>> Greg >>>> >>>> On Jun 5, 2010, at 4:27 PM, Michael Baird wrote: >>>> >>>>> Sounds like you found the issue. >>>>> >>>>> Regards >>>>> Michael Baird >>>>>> I started using ethtool and backing up through the chain of gear back >> to the router. At one box I'm getting this. Instead of a speed it's saying >> Unknown!(0). and it's only negotiated half duplex. >>>>>> >>>>>> XM.v5.2# ethtool eth0_real >>>>>> Settings for eth0_real: >>>>>> Supported ports: [ TP MII ] >>>>>> Supported link modes: 10baseT/Half 10baseT/Full >>>>>> 100baseT/Half 100baseT/Full >>>>>> Supports auto-negotiation: Yes >>>>>> Advertised link modes: 10baseT/Half 10baseT/Full >>>>>> 100baseT/Half 100baseT/Full >>>>>> Advertised auto-negotiation: Yes >>>>>> Speed: Unknown! (0) >>>>>> Duplex: Half >>>>>> Port: MII >>>>>> PHYAD: 4 >>>>>> Transceiver: internal >>>>>> Auto-negotiation: on >>>>>> Current message level: 0x00000000 (0) >>>>>> Link detected: no >>>>>> >>>>>> On Jun 5, 2010, at 4:00 PM, Michael Baird wrote: >>>>>> >>>>>> >>>>>>> Try ifconfig first, Ubiquiti doesn't call their interfaces eth0 >>>>>>> and eth1, they call them eth0_real and eth1_real. >>>>>>> >>>>>>> Regards >>>>>>> Michael Baird >>>>>>> >>>>>>>> I read a bit about ethtool and then gave it a shot but this was all >>>>>>>> I >> got. I iterated through eth0 through eth12 and got nothing. >>>>>>>> >>>>>>>> XM.v5.2# ethtool eth0 >>>>>>>> Settings for eth0: >>>>>>>> Cannot get device settings: No such device Cannot get wake-on-lan >>>>>>>> settings: No such device Cannot get message level: No such device >>>>>>>> Cannot get link status: No such device No data available XM.v5.2# >>>>>>>> ethtool eth1 Settings for eth1: >>>>>>>> Cannot get device settings: No such device Cannot get wake-on-lan >>>>>>>> settings: No such device Cannot get message level: No such device >>>>>>>> Cannot get link status: No such device No data available XM.v5.2# >>>>>>>> ethtool eth2 Settings for eth2: >>>>>>>> Cannot get device settings: No such device Cannot get wake-on-lan >>>>>>>> settings: No such device Cannot get message level: No such device >>>>>>>> Cannot get link status: No such device No data available >>>>>>>> >>>>>>>> On Jun 5, 2010, at 1:50 PM, Michael Baird wrote: >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>> They are linux based. >>>>>>>>> >>>>>>>>> Use ethtool<interface> >>>>>>>>> >>>>>>>>> Regards >>>>>>>>> Michael Baird >>>>>>>>> >>>>>>>>> >>>>>>>>>> I have a BulletM2 and a NanostationM5 back to back (the bullet's >> ethernet port is connected to the NanostationM5's "secondary" port. The >> NanostationM5 is doing POE pass through and powering the BulletM2. The >> NanostationM5 the BulletM2 is connected to is the far end of a pair of >> NanostationM5's acting as a backhaul. >>>>>>>>>> >>>>>>>>>> I've had some intermittent problems on the network and I wanted to >> rule out a flaky ethernet cable or connection so I decided to disable auto >> negotiate on the ethernet port and to force 100Mbps full duplex to see if >> the problem could be exacerbated to help locate it. When I force the >> BulletM2 and NanostationM5 to 100Mbps full duplex connectivity between >> them >> is lost. I thought "good, I've got a bad cable" so I replaced the cable. >> Still no good. Tried another. Still no good. The units are close together >> and connected together with a 6' cable. After trying various cables I >> still >> can't get forced 100Mbps full duplex to work. With 100Mbps full dup forced >> there is no connectivity, not even ping. >>>>>>>>>> >>>>>>>>>> If I revert to auto negotiate they connect fine. >>>>>>>>>> >>>>>>>>>> I'm assuming they are connecting at 100Mbps and probably full >> duplex because if I run a speed test from the BulletM2 to the far >> NanostationM5 (data path is from the BulletM2 through the ethernet cable >> to >> the close NanostationM5, then across the wireless connection (AirMax, no >> ptp >> ack) to the far NanostationM5) I'm seeing speeds of 95Mbps both directions >> with a combined speed of double that so it seems like things are running >> very well in both directions simultaneously. >>>>>>>>>> >>>>>>>>>> Is there any way through SSH or scripting to get the UBNT gear to >> report what speed has been negotiated on the ethernet port using auto >> negociate? >>>>>>>>>> >>>>>>>>>> Could this be a bug in the firmware? >>>>>>>>>> >>>>>>>>>> Thanks! >>>>>>>>>> Greg >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> --------------------------------------------------------------- >>>>>>>>>> ----------------- >>>>>>>>>> WISPA Wants You! 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