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Can't access devices in Cisco CML Devnet Lab from Ubuntu or MAC

char0051
Level 1
Level 1
 

Why can't I ping the devices in Cisco Devnet lab from my ubuntu running on a VM ? I can access the Devnet CML via https from the VM,I can't ping the IP though,which is weird.I am connected via VPN ofc to the Devnet CML lab.

 

I can see the routes -CML lab appliance is 10.10.20.161,I can https into it,but can't ping it,Devices inside the lab are also in the same subnet - 10.10.20.175 , .176 etc.., and I can't ping any of those devices.

 

default via 192.168.1.1 dev ens33 proto dhcp src 192.168.1.153 metric 100

10.10.20.0/24 dev tun0 scope link

10.10.21.0/24 dev tun0 scope link

10.10.22.0/24 dev tun0 scope link

10.10.23.0/24 dev tun0 scope link

10.10.24.0/24 dev tun0 scope link

10.17.248.0/24 dev tun0 scope link

131.226.217.48 via 192.168.1.1 dev ens33 src 192.168.1.153 metric 100

169.254.0.0/16 dev ens33 scope link metric 1000

172.16.30.0/24 dev tun0 scope link

192.168.1.0/24 dev ens33 proto kernel scope link src 192.168.1.153 metric 100

192.168.254.0/24 dev tun0 scope link

2 Replies 2

Ruben Cocheno
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@char0051 

check if you have any IPtables breaking that connectivity iptables -L

Tag me to follow up.
Please mark it as Helpful and/or Solution Accepted if that is the case. Thanks for making Engineering easy again.
Connect with me for more on Linkedin https://www.linkedin.com/in/rubencocheno/

This is what I see,

Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination