Open Stack

Hi all,
--> I created an openstack set up in my networking lab.
---> Vmware installed in one of the blade server then ubuntu 18.04
installed as OS.
---> openstack 5.3.1 version successfully installed in this os
---> In my lab we are using 192.168.x.x/16 network
--->  In openstack I created an external network with 192.168.x.x/16
----> In openstack I created an internal network with 172.16.x.x/16(for testing)
-----> then I created 1 external network(provider network),1 router,1
private               cloud .
------>    In internal network I created 2 instance
(172.16.0.2&172.16.0.3)this two instance pinging each other and i am
able assign floating ip(192.168.x.x) to this instance
----> Now my problem is I created a original instance with my
network(192.168.x.x)in provider network(that instance directly
attached to external (provider network))
--->This instance launched successfully and interface ip also our
internal ip and dns also showing correct but i am not able to ping our
any one of the lab network ip,internet also not available.

please help me on this



Thanks & Regards
Midhunlal N B
+918921245637