Configured all interface IP address with description.
As we have 2 small LAN network’s in SF and LA , why not just use DHCP on CORP router and let SF,LA forward DHCP request to CORP and get IP from here.

DHCP Configuration

Corp:

Corp(config)#ip dhcp excluded-address 192.168.10.1
Corp(config)#ip dhcp excluded-address 192.168.20.1
Corp(config)#ip dhcp pool SF_LAN
Corp(dhcp-config)#network 192.168.10.0 255.255.255.0

Corp(dhcp-config)#default-router 192.168.10.1
Corp(dhcp-config)#dns-server 4.4.4.4
Corp(dhcp-config)#exit
Corp(config)#ip dhcp pool LA_LAN
Corp(dhcp-config)#network 192.168.20.0 255.255.255.0

Corp(dhcp-config)#default-router 192.168.20.1
Corp(dhcp-config)#dns-server 4.4.4.4

SF:

SF(config)#int ethernet 2/0
SF(config-if)#ip helper-address 172.16.10.1

LA:

LA(config)#int ethernet 2/0
LA(config-if)#ip helper-address 172.16.10.5

After above configuration PC1 can not receive IP address , because there is no routing enabled in this network

VPCS> ip dhcp
DDD
Can’t find dhcp server