Need Help with a Packet Tracer Problem

v1ral

Hi guys

I've been stuck on this problem for quite awhile now. I have 2 PCs on the network, both on separate vlans, they can ping each other just fine. I have given all of the switches and router ip address in vlan 99 for their subinterfaces. However I can only ping the core switch and access-sw2. The rest are unpingable from both of the PCs.

Can anyone give me a hand with this or point me in the right direction?

Link to my PT file.
https://drive.google.com/open?id=0Bz4YKhyjqVQNVlNwZDFqdXROazQ
Con PW: cisco
Enable PW: class

Ltat42a

I saw that you had a config of "ip default-gateway 172.16.99.1" on Access-SW2, but not on Access-SW1, DIST-SW1, and DIST-SW2. I added that config to those three, and pings are now successful.