Temporary Disconnection Issue

RouterOS Wireless Networking
1

Today one of our towers had a disconnection issue with some but not all of our clients. Out of 20 users, we had about 8 get disconnected over and over for about an hour then everything goes normal and everyone is connected again. Here is a sample log.

jan/12 21:05:20 pppoe,ppp,info pppoe-out1: disconnected
jan/12 21:05:20 pppoe,ppp,info pppoe-out1: initializing…
jan/12 21:05:20 pppoe,ppp,info pppoe-out1: dialing…
jan/12 21:05:20 pppoe,ppp,info pppoe-out1: authenticated
jan/12 21:05:20 pppoe,ppp,info pppoe-out1: connected
jan/12 21:08:29 pppoe,ppp,info pppoe-out1: terminating… - peer is not
responding
jan/12 21:08:29 pppoe,ppp,info pppoe-out1: disconnected
jan/12 21:08:29 pppoe,ppp,info pppoe-out1: initializing…
jan/12 21:08:29 pppoe,ppp,info pppoe-out1: dialing…
jan/12 21:08:30 pppoe,ppp,info pppoe-out1: authenticated


All units are mikrotik units running the senyo nmp- cards. And before this happend many of these clients had been connected for weeks. One of my most observant customers noticed the network to slow down and then back to normal was just over an hour of the above the logs. The tower has one 16db omni and each client is using a 15db panel antani.

What makes this so strange is that some people stayed connected while others did not, and some of them are within a very short distance from each other. I was thinking perhaps it is an interference issue but I don’t understand why everyone was not affected. And why would two clients that are like across the street from each other would have one of them be disconnected while other was rock solid.

Any suggestions?

2

would extentions have anything to do with this? like some are set to pre-2.9.25 and others set to post-2.9.25 and if so whats the differance?

3

The same issue happend today, but this time I was monitoring the system and was actually able to go to a client location while it was happening. It happed for just over an hour from like 9:50 to 11:10.

rb112 with 400mw card and 15db grid antani pointing to an rb532a with 400mw omni at a range of .75 miles

The client:

Signal strenth -62
tx strenth -61 to -63
S/N 31

1m -62
2m -65
5.5m -62

ack 30
tx/rx ccq 81/80

I was sitting logged into the unit and watching and there was no change in the signal strenth when it would just drop. And when it returned it was immedialy back at -62. The drops are randome sometimes 30 seconds sometimes 5-7 mintues then drop.

Seems about 7 of the 20 clients on the unit do this. And then a little after 11:00 everything is normal no disconnects until the next day. All units are using the same wireless cards and same Microtik o/s versions (latest btw)

4

I had a client Mikrotik that would stay associated but, lose service between 7:00 A.M. and come back daily at 9:00a.m. I thought maybe interference at clients location. I moved the client to different location different client, same results cards can do funny things. I am not saying this is your issue, but possibly flakey card in your main AP.

5

This issue was solved by replacing the radio. It did turn out to be a bad radio card.