DevBox Connection Problem: Sandbox IOS XE on Catalyst 9000 16.12 EFT Code (devnetsandbox-us-sjc.cisco.com:20315)

[fgossett]

...Message seems to indicate unstable/slow Internet but... bandwidth seems adequate, sandbox vpn tunnel is stable, etc...  This could be something simple I'm missing?  ...Any ideas?

After tunnel is established the DevBox nor 9300 switch respond to pings...

$ ping 10.10.20.20
PING 10.10.20.20 (10.10.20.20): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
Request timeout for icmp_seq 3
Request timeout for icmp_seq 4
^C
--- 10.10.20.20 ping statistics ---
6 packets transmitted, 0 packets received, 100.0% packet loss
$ ping 10.10.20.100
PING 10.10.20.100 (10.10.20.100): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
^C

[bigevilbeard]

I tried a sandbox and didn't see the same issue you noted. Tear the reservation and begin a new one, see if that does the trick.

Hope this helps.

[fgossett]

Solved: Thank you Stuart …and everyone else. The problem seem to be related to an older version of macOS Firefox used (56.0b3 (64-bit)) -but must keep around for other applications. Using the latest Chrome browser works great ( 81.0.4044.138). …Many thanks!

[bigevilbeard]

Awesome, glad you are fixed up - happy labbing!