Does anybody know if its normal for CPU usage to be at 100% all of the time on these switches? The fans weren’t running when I was setting up but CPU usage in maestro has been at 100% for 5 days straight and normal CPU usage on our other switches with the same equipment is around 20-35%. I suspect this is just an issue with maestro showing high usage but didn’t know if i was missing something
To make sure there is no display error by cnmaestro run the command directly on the switch:
“show env all” and see the results. (You can execute that command also from cnmaestro; Select switch from left menu; Tools-> Remote CLI).
Does switches have an identical version of the operating system and which version?
This is our only Cambium switch, we’re testing it to see if we want to switch over to them. Most of our others are Aruba 2530s
Dont know what is your config and what are you running (OSPF, BGP, only L2 services) but my next step will be to upgrade to the latest version, 4.1.3, and see the results…
Both switches have 800Mhz CPU, Aruba has ARM (didn’t find info for cnamtrix) so obviously that CPU utilization is not normal…
Strictly L2 services, running 4 AP’s, 14 POE cameras and 6 door controllers and total poe draw is only around 120W. I’m going to try the upgrade and see what happens once the plant shuts down for the day. I’m confident it’s just an issue with what maestro is showing but wanted to see if anybody else had similar issues
Hi Jacob,
It doesn’t look like a cnMaestro display issue as the device is showing the same value for Current CPU Usage on CLI. Can you invite saimahesh[dot]vudhya from Administration → Users → Invite Cambium Support section ? We will try to debug and identify if there is any issue from the cnMatrix device side.
Sai
cnMaestro Team
Hi,
Can you share the output of ‘show running-config’ on the switch?
Do you have any monitor tool eg. PRTG, Auvik etc. that does continuous snmp mib walk or continuous ssh disconnection/connection or port scan?
There is also a known issue that can consume 100% cpu. Do you have currently have 1G transceiver inserted in any 10G fiber port and the port is administratively disabled?
Thanks
Device > show running-config
# Building configuration...
# Software version: 4.0.1-r2
# Model Name : cnMatrix EX2028-P
!
logging severity warnings
!
!
interface gigabitethernet 0/3
spanning-tree portfast
!
!
interface gigabitethernet 0/5
spanning-tree portfast
!
!
interface gigabitethernet 0/7
spanning-tree portfast
!
!
interface mgmt0
ip address 192.168.0.1 255.255.255.0
no shutdown
!
interface vlan 1
no ip address
ip address 192.168.6.71 255.255.255.0
no shutdown
!
!
vlan 1
ports gigabitethernet 0/5,0/7,0/23-24 extreme-ethernet 0/1-4 untagged gigabitethernet 0/5,0/7 extreme-ethernet 0/1-4
name vlan1
!
vlan 2
ports gigabitethernet 0/1,0/9,0/15,0/17-18,0/23-24 untagged gigabitethernet 0/1,0/9,0/15,0/17-18
name Cameras
!
vlan 3
ports gigabitethernet 0/5,0/7,0/23-24
name voice
!
vlan 4
ports gigabitethernet 0/23-24
name VLAN4
!
vlan 60
ports gigabitethernet 0/10-12,0/23-24 untagged gigabitethernet 0/10-12
name Doors
!
vlan 70
ports gigabitethernet 0/2-4,0/6,0/8,0/13-14,0/16,0/19-24 untagged gigabitethernet 0/2-4,0/6,0/8,0/13-14,0/16,0/19-22
name Pelco
!
interface gigabitethernet 0/1
switchport pvid 2
!
interface gigabitethernet 0/2
switchport pvid 70
!
interface gigabitethernet 0/3
switchport pvid 70
!
interface gigabitethernet 0/4
switchport pvid 70
!
interface gigabitethernet 0/6
switchport pvid 70
!
interface gigabitethernet 0/8
switchport pvid 70
!
interface gigabitethernet 0/9
switchport pvid 2
!
interface gigabitethernet 0/10
switchport pvid 60
switchport acceptable-frame-type untaggedAndPriorityTagged
switchport mode access
!
interface gigabitethernet 0/11
switchport pvid 60
switchport acceptable-frame-type untaggedAndPriorityTagged
switchport mode access
!
interface gigabitethernet 0/12
switchport pvid 60
switchport acceptable-frame-type untaggedAndPriorityTagged
switchport mode access
!
interface gigabitethernet 0/13
switchport pvid 70
!
interface gigabitethernet 0/14
switchport pvid 70
!
interface gigabitethernet 0/15
switchport pvid 2
!
interface gigabitethernet 0/16
switchport pvid 70
!
interface gigabitethernet 0/17
switchport pvid 2
!
interface gigabitethernet 0/18
switchport pvid 2
!
interface gigabitethernet 0/19
switchport pvid 70
!
interface gigabitethernet 0/20
switchport pvid 70
!
interface gigabitethernet 0/21
switchport pvid 70
!
interface gigabitethernet 0/22
switchport pvid 70
!
interface gigabitethernet 0/23
switchport mode trunk
!
interface gigabitethernet 0/24
switchport mode trunk
!
!
interface gigabitethernet 0/3
qos trust dot1p
!
!
interface gigabitethernet 0/5
qos trust dot1p
!
!
interface gigabitethernet 0/7
qos trust dot1p
!
!
snmp engineId 80.00.08.1c.04.46.53
snmp community index private name private security private
snmp community index public name public security public
snmp group new user public security-model v1
snmp group new user public security-model v2c
snmp group new user private security-model v2c
snmp access new v1 read allObjects write restricted notify restricted
snmp access new v2c read allObjects write restricted notify restricted
ip route 0.0.0.0 0.0.0.0 192.168.6.254
!
!
ip name-server ipv4 192.168.3.4
ip name-server ipv4 192.168.50.4
!
interface gigabitethernet 0/3
lldp med-tlv-select network-policy
lldp med-app-type voice vlan vlan-id 3 priority 6 dscp 46
!
interface gigabitethernet 0/5
lldp med-tlv-select network-policy
lldp med-app-type voice vlan vlan-id 3 priority 6 dscp 46
!
interface gigabitethernet 0/7
lldp med-tlv-select network-policy
lldp med-app-type voice vlan vlan-id 3 priority 6 dscp 46
!
We use Lansweeper to monitor the network and we currently aren’t using the SFP ports.