First off a signal strength of -28 or -30 is like someone screaming in your
face, kind of impolite.  Someone mentioned in the recent past that a
customer with -55 needed to be toned down to B from G because of how close
they were and the link was significantly better.  I wouldn't expect it's
part of your problem, though.

It looks to me that LACP isn't doing it's job (or whatever device is
supposed to make them redundant).  You often see this problem when you plug
a switch into a switch or a layer 2 device into another layer 2 device,
creating a loop.  In your case it starts on one side, goes through the link,
bounces in the switch and out the other link and vice versa and repeats
indefinitely.

Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373

"When you have eliminated the impossible, that which remains, however
improbable, must be the truth."
--- Sir Arthur Conan Doyle


On Thu, Jun 25, 2009 at 10:39 AM, Ryan Ghering <[email protected]> wrote:

> Hello all, I got an issue that I haven't delt with before.
>
> note we HAVE done this scenario before just with diff radios and it worked.
>
> The Setup..
>
> we have a 3/4 mile long radio shot to one of our towers that we wanted to
> increase bandwidth to as well as give it some redundancy. So
> we bought 2 links of bullet5's and 2 pac wireless 2 foot dual pole dishes.
> (
> and yes the output DBM is set to EIRP max with the dishes. )
>
> We get the link up the radios work awesome. -28 to -30 dbm strength. in
> 54mbps mode. Speedtest on both links shows 26 mbps per radio.
>
> I add in the switches which one is set active for the LACP link on ports 22
> 23 and 24  port 22 is the old backhaul which is a simple cisco 1242 bridged
> radio link
> port 23 and 24 are the bullets. ( same on both switches btw ) the other
> switch is pretty much in default mode, as per HP's config example.
>
> I enable the switch ports for the bullets to allow them to link up the lacp
> and it works fine for a moment then the arp flood from hell happens.
> Devices all over my network stop responding for long periods of time.random
> customers stop passing traffic.
>
> Nothing I do gets me past this point.
>
> A more in depth look at the network for this link for you.
>
> Border-Router -> Extreme layer3 switch -> Core router -> HP2624 Switch ->
> Packetshaper 4500ISP -> Extreme layer3 switch -> hp2524 (lacp) -> Cisco +
> Bullet5's --- Cisco + Bullet5's -> HP2524 (lacp) -> Canopy CMM -> Various
> AP's.
>
> I don't need the Cisco backhaul anylonger however it would be nice to
> maintain as backup. (Which BTW is linked up at 54mbps as well.)
> Also I can't seem to ping any devices in the LACP link after they connect.
>
> Anyone have any ideas why this is going on? and how to fix it?
>
> Thanks in advance
> Ryan Ghering
> Network Operations Manager
> Plains.Net
>
>
>
> --------------------------------------------------------------------------------
> WISPA Wants You! Join today!
> http://signup.wispa.org/
>
> --------------------------------------------------------------------------------
>
> WISPA Wireless List: [email protected]
>
> Subscribe/Unsubscribe:
> http://lists.wispa.org/mailman/listinfo/wireless
>
> Archives: http://lists.wispa.org/pipermail/wireless/
>


--------------------------------------------------------------------------------
WISPA Wants You! Join today!
http://signup.wispa.org/
--------------------------------------------------------------------------------
 
WISPA Wireless List: [email protected]

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/

Reply via email to