Community discussions

MikroTik App
 
AlexT
newbie
Topic Author
Posts: 30
Joined: Thu Mar 29, 2018 9:51 am

hAP ac^2 problem

Mon Jan 28, 2019 5:46 pm

There is hAP ac ^ 2 with 1 Gbps uplink in ether1 (DHCP client);
The 1st laptop is connected by a 100 Mbps link in ether2 on mikrotik;
2nd laptop connected with 1 Gbps link in ether3 on mikrotik;
3rd laptop connected with 1 Gbps link in ether4 on mikrotik;
Mikrotik has default configuration (except for Wi-Fi settings);
The ROS version is 6.43.8 (stable).

Problem / oddity:
on the 2nd laptop, an iperf-client is running ~ 560 Mbps;
at the same time, I launch the torrent client on the 1st laptop, the file download starts at a speed of 95-98 Mbps and ... the speed of the iperf on the 2nd laptop starts to “jump wildly” - 10-150-400-300- 5 Mbps and so on.

I turn off the 1st laptop, turn on the 3rd laptop instead and start the torrent client on it: the download speed is 300-400 Mbps and iperf on the 2nd laptop does not notice anything and continues to give ~ 560 Mbps.


Question: how to overcome this disgrace? Why, when a device with a 100 Mbps link starts to recycle its 100 Mbps, the rest of the devices suffer?
 
AlexT
newbie
Topic Author
Posts: 30
Joined: Thu Mar 29, 2018 9:51 am

Re: hAP ac^2 problem

Tue Jan 29, 2019 10:44 am

When I plugged a 100 Mbps laptop into catalyst 3560E, and cat3560E hooked up 1 Gbps link into a mikrotik- everything worked perfectly.

How to make mikrotik work normally when devices with different link speed are connected to it?

P. S. do not suggest using cat3560E :)
 
User avatar
macgaiver
Forum Guru
Forum Guru
Posts: 1764
Joined: Wed May 18, 2005 5:57 pm
Location: Sol III, Sol system, Sector 001, Alpha Quadrant

Re: hAP ac^2 problem

Tue Jan 29, 2019 12:12 pm

post an /export of your configuration
 
AlexT
newbie
Topic Author
Posts: 30
Joined: Thu Mar 29, 2018 9:51 am

Re: hAP ac^2 problem

Tue Jan 29, 2019 2:09 pm

# jan/29/2019 14:21:00 by RouterOS 6.43.8
# software id = XXXX-XXXX
#
# model = RouterBOARD D52G-5HacD2HnD-TC
# serial number = XXXXXXXXXXX
/interface bridge
add name=bridge1
/interface wireless
set [ find default-name=wlan1 ] ssid=MikroTik
set [ find default-name=wlan2 ] ssid=MikroTik
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip pool
add name=dhcp_pool0 ranges=192.168.1.10-192.168.1.254
/ip dhcp-server
add address-pool=dhcp_pool0 disabled=no interface=bridge1 name=dhcp1
/interface bridge port
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
/ip address
add address=192.168.1.1/24 interface=bridge1 network=192.168.1.0
/ip dhcp-client
add dhcp-options=hostname,clientid disabled=no interface=ether1
/ip dhcp-server network
add address=192.168.1.0/24 gateway=192.168.1.1
/ip firewall filter
add action=fasttrack-connection chain=forward connection-state=\
    established,related
/ip firewall nat
add action=masquerade chain=srcnat out-interface=ether1
/ip service
set telnet disabled=yes
set ftp disabled=yes
set ssh disabled=yes
/system clock
set time-zone-name=Europe/Kiev
Last edited by AlexT on Tue Jan 29, 2019 2:20 pm, edited 1 time in total.
 
User avatar
mkx
Forum Guru
Forum Guru
Posts: 11621
Joined: Thu Mar 03, 2016 10:23 pm

Re: hAP ac^2 problem

Tue Jan 29, 2019 2:19 pm

The posted config does not correspond to description of your tests (e.g. ether4 is not mentioned at all in posted config).

When you start your tests, what does /tool profile cpu=all show? Any CPU maxed-up?
 
AlexT
newbie
Topic Author
Posts: 30
Joined: Thu Mar 29, 2018 9:51 am

Re: hAP ac^2 problem

Tue Jan 29, 2019 2:57 pm

The posted config does not correspond to description of your tests (e.g. ether4 is not mentioned at all in posted config).

When you start your tests, what does /tool profile cpu=all show? Any CPU maxed-up?

iperf-client is running on a laptop that is enabled by 1 Gbps link to ether2;
a torrent client is running on a laptop that is enabled by a 100 Mbps link to ether3:

NAME CPU USAGE
spi 0 0%
ethernet 0 3.5%
console 0 0.5%
firewall 0 0.5%
networking 0 1%
winbox 0 1.5%
management 0 0%
bridging 0 0%
unclassified 0 0.5%
cpu0 7.5%
ethernet 1 1%
console 1 0%
firewall 1 0.5%
networking 1 0.5%
winbox 1 0%
management 1 0%
bridging 1 0.5%
unclassified 1 0%
cpu1 2.5%
ethernet 2 1.5%
firewall 2 0%
networking 2 0.5%
 
User avatar
mkx
Forum Guru
Forum Guru
Posts: 11621
Joined: Thu Mar 03, 2016 10:23 pm

Re: hAP ac^2 problem

Tue Jan 29, 2019 3:46 pm

The profiling output you posted is not complete (missing most info about cpu2 and all info about cpu3).

It is really hard to help people who think they are smart and don't post complete data.
 
AlexT
newbie
Topic Author
Posts: 30
Joined: Thu Mar 29, 2018 9:51 am

Re: hAP ac^2 problem

Tue Jan 29, 2019 4:40 pm

This is all output /tool profile cpu = all
Probably, cpu2 and cpu3 did not get here due to the fact that they were not involved at the time of the "profiling"

Who is online

Users browsing this forum: armandfumal, DanMos79, holvoetn, jamesperks and 108 guests