Hi Joses,
Thank you for your reply, below are the outputs that you asked for, and static route + ping to show connectivity
root@Brach-1> show configuration | display set | match ge-0/0/1
set security ike gateway PALO-GW external-interface ge-0/0/1.0
set security zones security-zone untrust interfaces ge-0/0/1.0
set interfaces ge-0/0/1 description GW
set interfaces ge-0/0/1 unit 0 family inet address 192.168.200.2/24
root@Brach-1> show route 192.168.100.2
inet.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
0.0.0.0/0 *[Static/5] 3d 17:05:49
> to 192.168.200.1 via ge-0/0/1.0
root@Brach-1> show arp no-resolve | match ge-0/0/1
00:0c:29:d2:1d:35 192.168.200.1 ge-0/0/1.0 none
root@Brach-1# show routing-options
static {
route 0.0.0.0/0 next-hop 192.168.200.1;
route 192.168.10.0/24 next-hop st0.0;
root@Brach-1# run ping 192.168.100.2 source 192.168.200.2
PING 192.168.100.2 (192.168.100.2): 56 data bytes
64 bytes from 192.168.100.2: icmp_seq=0 ttl=63 time=2.085 ms
64 bytes from 192.168.100.2: icmp_seq=1 ttl=63 time=1.207 ms
64 bytes from 192.168.100.2: icmp_seq=2 ttl=63 time=1.316 ms
^C
--- 192.168.100.2 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 1.207/1.536/2.085/0.391 ms