Onboarding a EX2016M-P switch to cnMaestro-X

Products cnMaestro
1

Hey there.
We have a strange problem with our new EX2016M-P switch. We want to onboard it to cnMaestro-X cloud services. BUT the problem is we do not get any DNS services to work.
We added 8.8.8.8 as DNS-Server and we can also ping to our internal other switches. But we cannot ping anything, no Google, no nothing.

# show system info

Hardware Version                  : 01
Firmware Version                  : Diag-2.03.01
CNS Software Version              : 5.0.1-r4
PoE Firmware Version              : 3.56-1011-1

Model Name                        : EX2016M-P

Base MAC Address                  : bc:e6:7c:x
Switch MAC Address                : bc:e6:7c:x
Serial Number                     : Xxx
Manufacture Date                  : 2022-10-11
System Contact                    : support.cambiumnetworks.com
System Name                       : uvswitch1-1-ops
System Description                : Cambium Networks cnMatrix EX2016M-P Ethernet
 Switch
System Location                   : Cambium Networks 3800 Golf Road, Suite 360 R
olling
Logging Option                    : Console Logging
Device Uptime                     : 0 Days, 1 Hrs, 7 Mins, 56 Secs
Login Authentication Mode         : Local
Config Save Status                : Not Initiated
Remote Save Status                : Not Initiated
Config Restore Status             : Successful
Startup-config Date               : Wed Nov 15 16:48:09 UTC 2023
Reset Button                      : Enabled
Number of Reboots                 : 6
Last Reboot Reason                : Warm reboot


# show int des

Interface   Status    Protocol    Description
---------  --------  -----------  -----------
Gi0/1      Up        Up
Gi0/2      Up        Down
Gi0/3      Up        Down
Gi0/4      Up        Down
Gi0/5      Up        Down
Gi0/6      Up        Down
Gi0/7      Up        Down
Gi0/8      Up        Down
Gi0/9      Up        Down
Gi0/10     Up        Down
Gi0/11     Up        Down
Gi0/12     Up        Down
Gi0/13     Up        Down
Gi0/14     Up        Down
Ex0/1      Up        Down
Ex0/2      Up        Down
mgmt0      Up        Down
vlan1      Up        Up


# show ip int

mgmt0 is up, line protocol is down
Internet Address is 192.168.0.1/24
Broadcast Address  192.168.0.255

vlan1 is up, line protocol is up
Internet Address is 192.168.255.81/24
Broadcast Address  192.168.255.255


# show cnmaestro
Currently managed by       : cnMaestro

Management Agent           : Enabled
cnMaestro URL              : https://cloud.cambiumnetworks.com
Certificate Validation     : Full
Connection State           : Connecting
Account ID                 :
Last Action                : Connect failed: Timeout was reached
Last Sync                  : Never


# show ip route

Codes: C - connected, S - static, R - rip, O - ospf,
IA - OSPF inter area, N1 - OSPF NSSA external type 1,
N2 - OSPF NSSA external type 2, E1 - OSPF external type 1,
E2 - OSPF external type 2

S 0.0.0.0/0  [1/1] via 192.168.255.1
C 192.168.255.0/24 is directly connected, vlan1


# show ip dns name-server

  Name Server IP Table
  ====================
  Index  Address-Type   IP-Address
  =====  ============   ===========
     1     ipv4          8.8.8.8

Andy thoughts what could be the problem?

Greetings from Cologne!
Michael

2

There is a NAT on 192.168.255.0 to go outside ?

3

As far as I know we have no NAT on this subnet.

4

Then you have the reason for not being able to access the Internet.
You simply don’t have external routing because there is no address translation :wink:

1 Like
5

It was a firewall issue. The subnet was not allowed to talk to the outside internet. Switches are now in Sync with the portal.

1 Like