On Running Mininet application - xterm h1 - display is not getting connected - need steps to procced

mininet> xtermh1
*** Unknown command: xtermh1
mininet> xterm h1
Error: Cannot connect to display
mininet>
EOF intfs nodes ports switch
dpctl iperf noecho px time
dump iperfudp pingall py wait
exit link pingallfull quit x
gterm links pingpair sh xterm
help net pingpairfull source
mininet> xterm h1
Error: Cannot connect to display >>>>>>>>>>>>>>>>>
mininet>

xterm h1 h2 ===> generally it should open the terminal window for hosts h1 and h2 . Happening as expected on Linux booted BIOS OS - terminal was launching certainly, with VMWARE nased LINUX-OS- terminal was
not not launching.

Above problem is observed even after enabling nested Virtualization- VT-x enabled at BIOS mode on "WINDOWS " as well as enabled on VMWARE - LINUX through a command : shared over meeting chat - hence confirmed and declared that "nested Vt-x can’t be established ".

Alternatively,
Possibilities are confirmed with docker initialization over Vmware LinuxOS-please confirm here the steps -
How i can connect to docker shell for experimenting “iperf” and "netperf " analysis incase suitable to create 2 different docker containers - h1 and h2.
Please confirm possibility of traffic analysing tool over docker created containers.

VMWARE nased LINUX-OS- terminal was not not launching

VMware என்ற தனியுரிமை மென்பொருளுக்கு இந்த குழுவில் உதவ இயலாது. VMware வாடிக்கையாளர்களுக்கு உதவ தனி துறையை VMware நிறுவனம் வைத்துள்ளது. அந்த துறையின் உதவியை நாடவும்.