[MikroTik] WDS - dropping packets

[Mirko Veselic]

I have three MT APs on 5.8 GHz connected in WDS. Everything works
regarding associations and WDS, but I have problems with packet loss
between these three APS. I have approximately 10% ping packet loss when I
ping one AP from another. Is there some bug in routeros that I'm not aware
of? All APs have clear line of sight, 1 km - 1,5 km distance, signal
strength -72 and -77. RouterOs version is 2.8.9.

Sounds more like you have some bridge connected that isn't running STP and
there is a loop.
John

Hi,

thanks for reply. STP is running on all of them, clients connected do not
run as bridges, they run as routers or NAT devices. I will check the
network again, but I think this is not the reason for the package loss. I
have another question regarding my setup. Is it necessary to have WDS
interfaces between all of them, or is it enough if two "slave" APs are
connected to the central one (which has two, wds1 and wds2)?

Regards,
Mirko
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[EzAzz Administrator]

Hi,
Can't speak for MT radios, but on an unrelated radio device vendor forum it
has been suggested that a radio (eg AP) gives higher priority to passing
traffic than to answering ping requests, and that pings directed to it may
be dropped quite frequently. A figure of 10% packet loss was quite common,
but possibly confusing as it seemed to be load dependent.

I would suggest that as long as you achieve lower packet losses than this
from client to your NOC (ie the traffic path), you need not worry about
pings to the radio as that only gives you an idea of how management traffic
(eg SNMP) for the AP might behave.

Just a suggestion to digest. Of course I might be wrong for these radios.
bw

----- Original Message -----
From: "Mirko Veselic" <***@blic.net>
To: "General questions about MikroTik RouterOS" <***@bruno.pmi.lv>
Sent: Saturday, May 22, 2004 6:47 PM
Subject: Re: [MikroTik] WDS - dropping packets

Post by Mirko Veselic

I have three MT APs on 5.8 GHz connected in WDS. Everything works
regarding associations and WDS, but I have problems with packet loss
between these three APS. I have approximately 10% ping packet loss when I
ping one AP from another. Is there some bug in routeros that I'm not aware
of? All APs have clear line of sight, 1 km - 1,5 km distance, signal
strength -72 and -77. RouterOs version is 2.8.9.

Sounds more like you have some bridge connected that isn't running STP and
there is a loop.
John

Hi,
thanks for reply. STP is running on all of them, clients connected do not
run as bridges, they run as routers or NAT devices. I will check the
network again, but I think this is not the reason for the package loss. I
have another question regarding my setup. Is it necessary to have WDS
interfaces between all of them, or is it enough if two "slave" APs are
connected to the central one (which has two, wds1 and wds2)?
Regards,
Mirko
_______________________________________________
ALL POSTS SHOULD BE ABOUT GENERAL ROUTEROS QUESTIONS
with text in the body "unsubscribe <password>" or "subscribe"

_______________________________________________
ALL POSTS SHOULD BE ABOUT GENERAL ROUTEROS QUESTIONS
To post to the list, address emails to ***@bruno.pmi.lv
To unsubscribe/subscribe: email to RouterOS-***@bruno.pmi.lv ,
with text in the body "unsubscribe <password>" or "subscribe"