I think what I am going to do tomorrow is keep this cisco 1900 in the noc aND PUT UP AN OLD HUB at the tower and set the abcjhaul to 10 meg half duplex to macth the rest of the SB stuff up there. Thats the nice part about the Canopy stuff!
Quoting Kevin Summers <[EMAIL PROTECTED]>: > > Supposedly half. Don't bother plugging it into a hub > with anything that is full duplex. You'll get nothing > but collisions and lost packets. > > They are best plugged into a switch, and if you just > happen to be able to program that port on the switch > to run at 10Mbit half duplex then you should be ok. > > Otherwise most autosense switches detect it as 10Mbit > Full duplex. It will work, but you'll have lost packets > and throughput below what you would get on most 802.11b > hardware. > > Kevin Summers > KISTech Internet Services Inc. > www.kistech.com > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] Behalf Of Scott Hoffman > > Sent: Sunday, October 12, 2003 4:40 PM > > To: [EMAIL PROTECTED] > > Subject: Re: [smartBridges] Local traffic swamping with hub (MRTG) > > > > > > So is AB full or Half duplex on the ethernet side....? > > > > Scott > > > > > > ----- Original Message ----- > > From: "Lars Gaarden" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Friday, October 10, 2003 7:51 PM > > Subject: Re: [smartBridges] Local traffic swamping with hub (MRTG) > > > > > > > Blazen Wireless wrote: > > > > Waykand, > > > > > > > > Just my 2 cents your also going to see problems with a cheap switch > > unless > > > > you can for sure get in and force it to 10 meg 1/2 duplex! the > > Airbridges > > > > don't play nice with switches that auto sense. I had to go > > out and buy a > > 12 > > > > port Cisco router that I could log into and set to the correct > setting > > and > > > > if you go back there are many threads of people seeing problems with > > packet > > > > loss, slow throughput and many other problems all because an auto > > sensing > > > > D-link, Linkysys and many other cheap switches always sense > > the AB as 10 > > meg > > > > FULL duplex. > > > > > > For whatever it is worth (2 cents?). > > > > > > It looks like any autoconfig ethernet device will config to 10Mbps > > > full duplex > > > if connected to an aP(P(O))/aB(O/T). > > > > > > In at least *some* configurations, this will give heavy (5-20%) packet > > > loss > > > in the upstream direction. Error counters on the ether and wireless > side > > > does not show this packet loss (lost/overrun/failed/aged/etc > > > counters). If the > > > device connected to the radio is set to 10Mbps half duplex, the problem > > > disappears. Why? I have no idea. All I know is that I have to hard > > > code the > > > ethernet ports on my routers/firewalls (mainly rtl8139/a few intel > > > 82558 eth > > > chipset) to 10/hdx to avoid the problem. > > > > > > I asked my distributor to try to reproduce the problem in the lab, but > > > they > > > didn't find any problems with 10/fdx. So this is kind of a > > skeleton in the > > > closet - some times 10/fdx works fine, some times it gives heavy > > > packet loss. > > > > > > It could be a link layer problem - i.e., some ethernet chips don't > > > work very > > > well with the chip in the radios but only in fdx mode, it could be an > > > ethernet > > > driver problem, it could be a timing problem with running the radio > > > eth port > > > fdx when the wireless side work load is too high (the dual core > > atmel chip > > > runs both the wireless and eth MACs). Pretty much impossible to debug > > > unless > > > you have debug/devel versions of the radio fw and eth driver on > > the other > > > end of the cable and equipment to monitor the ethernet phys/link level > > > signals. > > > > > > -- > > > LarsG > > > > > > ----------ANNOUNCEMENT---------- > > > Don't forget to register for WISPCON IV > > > http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm > > > > > > The PART-15.ORG smartBridges Discussion List > > > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > > smartBridges <yournickname> > > > To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe > > smartBridges) > > > Archives: http://archives.part-15.org > > > > > > > ----------ANNOUNCEMENT---------- > > Don't forget to register for WISPCON IV > > http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm > > > > The PART-15.ORG smartBridges Discussion List > > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > > smartBridges <yournickname> > > To Remove: mailto:[EMAIL PROTECTED] (in the body type > > unsubscribe smartBridges) > > Archives: http://archives.part-15.org > > ----------ANNOUNCEMENT---------- > Don't forget to register for WISPCON IV > http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm > > The PART-15.ORG smartBridges Discussion List > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges > <yournickname> > To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe > smartBridges) > Archives: http://archives.part-15.org > Martin Moreno Blazen Wireless 909-907-4106 www.blazenwireless.com ----------ANNOUNCEMENT---------- Don't forget to register for WISPCON IV http://www.wispcon.info/us/wispcon-iv/wispcon-iv.htm The PART-15.ORG smartBridges Discussion List To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) Archives: http://archives.part-15.org
