Try:
dladm show-dev
dladm show-link
route show 10.18.18.1
netmask 255.255.255.0 for 10.18.18.188 correct ?
is 10.18.18.0/24 a vlan ? -> vlan tagging on the network switch port enabled ?
is the...
Download pca (a script) and patchdiag.xref from the pca site (e.g. use a desktop pc with internet) and transfer them ( you may even use copy + paste ) to the server:/var/tmp
The run