SXT chain problem

RouterOS Wireless Networking
1

Since my post was deleted from SXT hardware forum and locked down i will try it here instead.

anyone else who had any problem whit chain1?

I always tests the link in my office before i mount it on the mast. Last week i set up a pair of SXT-5D, who works whit both chains perfectly.
Yesterday I set up a new pair of SXT, but this time SXT-5HnD. The same configuration and the same office, but i only get chain0 to work perfectly. When I enable chain1, the client disconnects at heavy load. And the link is very unstable.

What could be the problem? Its not the configuration because its the same as before. Different Hardware? Whats the different between 5D and 5HnD? any suggestions what to do?

2

you mean when Both chains are active you get disconnects? where is it connected? there is no 5D, all currently sold SXT devices are called SXT 5HnD. Maybe some labels are short, but the devices are all the same.

3

Yes, when the both chains are active. Then I get disconnect when i pass about 100mbit. any idea ?

Well, there you are wrong normis, because the first batch we bought was namned SXT-5D. But now they are called SXT-5HnD =)

4

like I said, it’s a different sticker, hardware is the same.

5

well then u made your self unclear =)

but what about my set of SXT ?

The pair of SXT I tested before worked perfectly, but this doesn’t. ? any hardware fault?

6

post wireless debug logs, and signal levels on both chains (from both end registration tables).

7

signal level about 50-60 on chain0 but nothing on chain1. haven’t seen that before. strange? ? ?

8

it’s disabled then.

show us images or printouts, and debug logs

9

no, they are both active. maybe this one is broken.

I have tried out several SXTs but no diffrent in success.

10

both chain0 and chain1 show normal tx/rx levels, all seems fine. maybe you confused it with chain2 which your device doesn’t have.

to solve the disconnect problem, I need to see debug logs, make them like this:

http://wiki.mikrotik.com/wiki/Manual:Wireless_Debug_Logs

11

sorry, I had a rush and missed that.

AP

Client

12

images don’t work. post your logs as text please

13

well, they works fine to me? ? ?


client

00:58:10 wireless,debug debug: wlan1: must select network
00:58:10 wireless,debug debug: empty
00:58:10 wireless,debug debug: wlan1: no network that satisfies connect-list, by default choose with strongest signal
00:58:10 wireless,debug debug: wlan1: failed to select network
00:58:14 wireless,debug debug: wlan1: must select network
00:58:14 wireless,debug debug: 00:0C:42:88:AC:E5: on 5180 AP: no SSID MikroTik caps 0x0 rates 0x0 basic 0x0 MT: no
00:58:14 wireless,debug debug: wlan1: no network that satisfies connect-list, by default choose with strongest signal
00:58:14 wireless,info 00:0C:42:88:AC:E5@wlan1 established connection on 5180, SSID MikroTik
00:58:14 wireless,info debug: 00:0C:42:88:AC:E5@wlan1 established connection on 5180, SSID MikroTik
00:58:32 wireless,info 00:0C:42:88:AC:E5@wlan1: lost connection, medium-access timeout
00:58:32 wireless,info debug: 00:0C:42:88:AC:E5@wlan1: lost connection, medium-access timeout
00:58:35 wireless,debug debug: wlan1: must select network
00:58:35 wireless,debug debug: 00:0C:42:88:AC:E5: on 5180 AP: no SSID MikroTik caps 0x0 rates 0x0 basic 0x0 MT: no
00:58:35 wireless,debug debug: wlan1: no network that satisfies connect-list, by default choose with strongest signal
00:58:35 wireless,info 00:0C:42:88:AC:E5@wlan1 established connection on 5180, SSID MikroTik
00:58:35 wireless,info debug: 00:0C:42:88:AC:E5@wlan1 established connection on 5180, SSID MikroTik
01:00:26 wireless,info 00:0C:42:88:AC:E5@wlan1: lost connection, medium-access timeout
01:00:26 wireless,info debug: 00:0C:42:88:AC:E5@wlan1: lost connection, medium-access timeout
01:00:30 wireless,debug debug: wlan1: must select network
01:00:30 wireless,debug debug: 00:0C:42:88:AC:E5: on 5180 AP: no SSID MikroTik caps 0x0 rates 0x0 basic 0x0 MT: no
01:00:30 wireless,debug debug: wlan1: no network that satisfies connect-list, by default choose with strongest signal
01:00:30 wireless,info 00:0C:42:88:AC:E5@wlan1 established connection on 5180, SSID MikroTik
01:00:30 wireless,info debug: 00:0C:42:88:AC:E5@wlan1 established connection on 5180, SSID MikroTik
01:02:19 wireless,info 00:0C:42:88:AC:E5@wlan1: lost connection, medium-access timeout
01:02:19 wireless,info debug: 00:0C:42:88:AC:E5@wlan1: lost connection, medium-access timeout
01:02:22 wireless,debug debug: wlan1: must select network
01:02:22 wireless,debug debug: 00:0C:42:88:AC:E5: on 5180 AP: no SSID MikroTik caps 0x0 rates 0x0 basic 0x0 MT: no
01:02:22 wireless,debug debug: wlan1: no network that satisfies connect-list, by default choose with strongest signal
01:02:22 wireless,info 00:0C:42:88:AC:E5@wlan1 established connection on 5180, SSID MikroTik
01:02:22 wireless,info debug: 00:0C:42:88:AC:E5@wlan1 established connection on 5180, SSID MikroTik
02:44:06 wireless,info 00:0C:42:88:AC:E5@wlan1: lost connection, medium-access timeout
02:44:06 wireless,info debug: 00:0C:42:88:AC:E5@wlan1: lost connection, medium-access timeout
02:44:10 wireless,debug debug: wlan1: must select network
02:44:10 wireless,debug debug: 00:0C:42:88:AC:E5: on 5180 AP: no SSID MikroTik caps 0x0 rates 0x0 basic 0x0 MT: no
02:44:10 wireless,debug debug: wlan1: no network that satisfies connect-list, by default choose with strongest signal
02:44:10 wireless,info 00:0C:42:88:AC:E5@wlan1 established connection on 5180, SSID MikroTik
02:44:10 wireless,info debug: 00:0C:42:88:AC:E5@wlan1 established connection on 5180, SSID MikroTik
20:12:53 system,info,account user admin logged in via winbox
20:12:56 system,info,account user admin logged in via local


AP

00:00:09 system,info router rebooted
00:00:15 interface,info ether1 link up (speed 100M, full duplex)
00:00:18 wireless,info 00:0C:42:87:EE:6F@wlan1: reconnecting
00:00:18 wireless,info 00:0C:42:87:EE:6F@wlan1: connected
00:00:22 system,info,account user admin logged in via winbox
00:00:53 system,info log rule added by admin
00:03:04 system,info device changed by admin
00:03:12 wireless,debug debug: wlan1: 00:0C:42:87:EE:6F not in local ACL, by default accept
00:03:13 wireless,info 00:0C:42:87:EE:6F@wlan1: connected
00:03:13 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: connected
00:03:51 wireless,info 00:0C:42:87:EE:6F@wlan1: disconnected, control frame timeout
00:03:51 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: disconnected, control frame timeout
00:03:56 wireless,debug debug: wlan1: 00:0C:42:87:EE:6F not in local ACL, by default accept
00:03:56 wireless,info 00:0C:42:87:EE:6F@wlan1: connected
00:03:56 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: connected
00:04:19 wireless,info 00:0C:42:87:EE:6F@wlan1: disconnected, control frame timeout
00:04:19 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: disconnected, control frame timeout
00:04:22 wireless,debug debug: wlan1: 00:0C:42:87:EE:6F not in local ACL, by default accept
00:04:22 wireless,info 00:0C:42:87:EE:6F@wlan1: connected
00:04:22 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: connected
00:05:26 wireless,info 00:0C:42:87:EE:6F@wlan1: disconnected, control frame timeout
00:05:26 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: disconnected, control frame timeout
00:05:29 wireless,debug debug: wlan1: 00:0C:42:87:EE:6F not in local ACL, by default accept
00:05:29 wireless,info 00:0C:42:87:EE:6F@wlan1: connected
00:05:29 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: connected
00:05:54 wireless,info 00:0C:42:87:EE:6F@wlan1: disconnected, control frame timeout
00:05:54 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: disconnected, control frame timeout
00:05:54 wireless,debug debug: wlan1: 00:0C:42:87:EE:6F not in local ACL, by default accept
00:05:54 wireless,info 00:0C:42:87:EE:6F@wlan1: connected
00:05:54 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: connected
00:22:59 wireless,info 00:0C:42:87:EE:6F@wlan1: disconnected, not responding
00:22:59 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: disconnected, not responding
00:22:59 wireless,debug debug: wlan1: 00:0C:42:87:EE:6F not in local ACL, by default accept
00:22:59 wireless,info 00:0C:42:87:EE:6F@wlan1: connected
00:22:59 wireless,info debug: 00:0C:42:87:EE:6F@wlan1: connected

14

please try to upgrade to RouterOS v5.3 and report back.
What is the distance for that wireless link?

15

Hello,

we have the same problem! Everything is fine with only chain0 enabled. If we enable chain0+chain1 and traffic exceeds 100mbps (when it switches over to chain1) we have big problems. Enable chain1 only the link is very very bad (no real traffic goes thru) but signal levels are good (-55)

Any fixes or is it a hardware problem? We run 5.5 on the SXT.

Regards,
Joerg

16

brainy, you can’t use use chain1 without enabling chain0.
Look at these posts:
http://forum.mikrotik.com/t/routerboard-sxt-5hnd/43630/173

17

I originally had similar problems when I first got my SXT’s. (see thread here: http://forum.mikrotik.com/t/sxt-nv2-extension-channel-problems/46829/1)

The fix ended up being an upgrade to 5.4 firmware. Even though there wasn’t anything in the changelog relating to it, after the upgrade it started working great and was stable under a heavy load.