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Old 08-07-2005, 05:22 PM
Jeff Liebermann
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Default Re: good pings, slow data transfer.

On Sun, 7 Aug 2005 10:01:52 +0000 (UTC), rel <relic@home.nl> wrote:

>I suspect its the connection from B1 to B2, this is connected with COAX
>over a distance of 60 meters.


Coax as in RG-58a/u as in 10base2 also known as Cheapernet?
I do that all the time, but it's totally inappropriate for this
arrangment. If they're using 10base2, it's half duplex (HDX) at
10mbit/sec. You'll get about 6Mbit/sec thruput which makes it a
substantial bottleneck. The Cisco 802.11b link is slower, but if your
experts decide to replace the Cisco with something that will keep up
with the speed of the RedLine boxes, the coax will become the
preformance bottle neck.

If there's a 10baseT to 10base2 media converter in the system, the
flow control isn't setup correctly, or the ethernet interfaces in
either the Cisco or RedLine boxes are setup wrong, or NWAY is screwing
up again.

>As for the signal strenght, could I see
>this in web management tool of the devices?


Yes. Yes, yes, YES! Use the tools the manufacturers supplied.

>I don't know much about RF
>and because its a p2p connection there would't be a field?


Field? Point to point (wirless bridge) has the same RF problems as
any other wireless system.

>The reason why they used cisco for the last end bit, was because (as
>they say) they couldn't get another redline devices.


They lie. They unloaded what they had in stock because you were in a
rush. As long as it's temporary, I don't see a problem. Eventually,
the Cisco boxes should be replaced by another pair of RedLine wireless
bridges.

What are your performance expectations (i.e. thruput)? If it's more
than about 3-5Mbits/sec sustained thruput, the Cisco's are a bad
choice. If it's about 3-5Mbits/sec, then you overpaid for the
RedLine boxes as another pair of Cisco 350's would be much cheaper.

Incidentally, do you have any clue as to the relative cost of the
RedLine routers versus the Cisco routers?

>Could you tell me what settings I should check on the web management of
>the devices to make sure they have been setup right?


No. That's not your job. That's the job of whomever sold you this
conglomeration of boxes.


--
Jeff Liebermann jeffl@comix.santa-cruz.ca.us
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
AE6KS 831-336-2558

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