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VLAN - CRS112 - Slow

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dima1002
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Posts: 160
Joined: Fri Jan 26, 2018 8:40 pm

VLAN - CRS112 - Slow

Tue Jan 03, 2023 2:52 pm

Hello,

my switch is very slow. CPU is always at 70-100% why?
Code: Select all
# jan/02/1970 00:40:44 by RouterOS 7.6
# software id = X7HI-QAK7
#
# model = CRS112-8P-4S
# serial number = HBB07S30KDM
/interface bridge
add name=BRIDGE protocol-mode=none
/interface vlan
add comment=MGT interface=BRIDGE name=VLAN_99 vlan-id=99
add comment=COMPANY interface=BRIDGE name=VLAN_100 vlan-id=100
add comment=GUEST interface=BRIDGE name=VLAN_200 vlan-id=200
add comment=DMZ interface=BRIDGE name=VLAN_300 vlan-id=300
add comment=HOTSPOT interface=BRIDGE name=VLAN_400 vlan-id=400
add comment=PRIVAT interface=BRIDGE name=VLAN_500 vlan-id=500
add comment=LTE interface=BRIDGE name=VLAN_600 vlan-id=600
add comment=BACKUP1 interface=BRIDGE name=VLAN_700 vlan-id=700
add comment=BACKUP2 interface=BRIDGE name=VLAN_800 vlan-id=800
add comment=BACKUP3 interface=BRIDGE name=VLAN_900 vlan-id=900
add comment=IOT1 interface=BRIDGE name=VLAN_1000 vlan-id=1000
add comment=IOT2 interface=BRIDGE name=VLAN_1100 vlan-id=1100
add comment=IOT3 interface=BRIDGE name=VLAN_1200 vlan-id=1200
add comment=IOT4 interface=BRIDGE name=VLAN_1300 vlan-id=1300
add comment=HOTSPOT01 interface=BRIDGE name=VLAN_1400 vlan-id=1400
add comment=HOTSPOT02 interface=BRIDGE name=VLAN_1500 vlan-id=1500
add comment=HOTSPOT03 interface=BRIDGE name=VLAN_1600 vlan-id=1600
add comment=HOTSPOT04 interface=BRIDGE name=VLAN_1700 vlan-id=1700
add comment=HOTSPOT05 interface=BRIDGE name=VLAN_1800 vlan-id=1800
add comment=HOTSPOT06 interface=BRIDGE name=VLAN_1900 vlan-id=1900
add comment=HOTSPOT07 interface=BRIDGE name=VLAN_2000 vlan-id=2000
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip hotspot profile
set [ find default=yes ] html-directory=hotspot
/port
set 0 name=serial0
/interface bridge port
add bridge=BRIDGE interface=ether1
add bridge=BRIDGE interface=ether2
add bridge=BRIDGE interface=ether3
add bridge=BRIDGE interface=ether4
add bridge=BRIDGE interface=ether5
add bridge=BRIDGE interface=ether6
add bridge=BRIDGE interface=ether7
add bridge=BRIDGE interface=ether8
add bridge=BRIDGE interface=sfp9
add bridge=BRIDGE interface=sfp10
add bridge=BRIDGE interface=sfp11
add bridge=BRIDGE interface=sfp12
/interface ethernet switch egress-vlan-tag
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=99
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=100
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=200
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=300
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=400
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=500
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=600
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=700
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=800
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=900
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1000
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1100
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1200
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1300
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1400
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1500
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1600
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1700
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1800
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1900
add tagged-ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=2000
/interface ethernet switch ingress-vlan-translation
add new-customer-vid=100 ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7
/interface ethernet switch vlan
add ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=99
add ports=switch1-cpu,ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=100
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=200
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=300
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=400
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=500
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=600
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=700
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=800
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=900
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1000
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1100
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1200
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1300
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1400
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1500
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1600
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1700
add ports=ether1,ether2,ether3,ether4,ether5,ether6,ether7,ether8,sfp10,sfp9,sfp12,sfp11 vlan-id=1800
/ip dhcp-client
add interface=VLAN_99
/system identity
set name=TEST
/tool romon
set enabled=yes
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SPKA16
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Posts: 29
Joined: Fri Aug 05, 2016 8:41 pm

Re: VLAN - CRS112 - Slow

Fri Jan 06, 2023 10:14 pm

Yes the CRS1xx are special ones with switchchips which need more loving in the /switch menu. We use them only for simple desktop switch with normal birdge config with hw=no. CPU is not a bottleneck for our use but I can imagine it will be with so many vlans and high load of them.

https://help.mikrotik.com/docs/pages/vi ... cessports)
I dont have one to test with but according to that help page you seem to be doing it correct but you are simply missing hw=yes on all ports on the all bridge ports?
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dima1002
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Posts: 160
Joined: Fri Jan 26, 2018 8:40 pm

Re: VLAN - CRS112 - Slow

Thu Jan 12, 2023 4:46 pm

HW is on for all ports. The script was wrong there.
Yes, then I also think that it may be the many VLANs.
It's really a pity, although hardly any data is flowing, the CPU is always at 40-60%
Thanks for the analysis
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mkx
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Re: VLAN - CRS112 - Slow

Thu Jan 12, 2023 10:31 pm

If you run /tool profile, which process(es) use most CPU cycles?
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andkar
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Posts: 47
Joined: Tue Aug 11, 2020 9:20 pm

Re: VLAN - CRS112 - Slow

Thu Jan 12, 2023 10:50 pm

Hi,

Why all bridge vlan interfaces? Only mangement is needed.
Try removing all bridge vlan interfaces except the management interface VLAN_99 and test again.
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dima1002
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Re: VLAN - CRS112 - Slow

Fri Jan 13, 2023 10:54 am

Here:
T2.JPG
T1.JPG
Try removing all bridge vlan interfaces except the management interface VLAN_99 and test again.
where do i do that?
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andkar
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Posts: 47
Joined: Tue Aug 11, 2020 9:20 pm

Re: VLAN - CRS112 - Slow

Fri Jan 13, 2023 11:49 am

Sorry I meant VLAN interfaces, not "bridge VLAN interfaces".

Here is an example where VLAN1010 is mangement VLAN.
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mkx
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Re: VLAN - CRS112 - Slow

Fri Jan 13, 2023 2:20 pm

A very considerable portion of CPU cycles (roughly half) is consumed by management ... which is your winbox connection requesting lots of stat counters updates. Try to disconnect winbox, sonnect to router via CLI (ssh) and observe CPU utilization (/system resource print and /tool profile).

Yes, some load (the process "networking") can be due to fact you configured device to be part of all VLANs ... CRS as switch can push VLAN traffic between ports, but switch1-cpu interface doesn't have to be member of such VLAN (settings under /interface ethernet switch). If not other things, switch chip will push broadcast and multicast frames towards CPU and then CPU will have to discard them. Ditto for frames with dst-mac-address missing from FDB.
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andkar
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Posts: 47
Joined: Tue Aug 11, 2020 9:20 pm

Re: VLAN - CRS112 - Slow

Fri Jan 13, 2023 3:21 pm

Yes, managment though winbox can easily consume 25% CPU on this device. This load should not affect swiching performance (provided cpu does not take part in swiching, see below).

1.
switch-1 cpu should only be member of VLAN 99
2.
Only one VLAN interface needed:
/interface vlan
add comment=MGT interface=BRIDGE name=VLAN_99 vlan-id=99
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dima1002
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Re: VLAN - CRS112 - Slow

Fri Jan 13, 2023 8:47 pm

Yes, it looks better there. Is that normal?
T4.JPG
T3.JPG
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mkx
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Re: VLAN - CRS112 - Slow

Fri Jan 13, 2023 11:13 pm

Yes, it looks better there. Is that normal?

Well, management still consumes between 5% and 10%. I don't have a CRS112 so I can't say. But on my (other) devices, management is normally nowhere to be seen if I'm connected via CLI.
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