AM335X StarterWare 执行enetEcho.c时分配不到IP

AM335X StarterWare 移植到自己的开发板时出现分配不到IP的情况,提示如下

PHY found at address 1 for Port 2 of Instance 0.
Performing Auto-Negotiation...
Auto-Negotiation Successful.
Transfer Mode : 100 Mbps Full Duplex.
PHY link verified for Port 2 of Instance 0.
DHCP Trial 1...
DHCP Trial 2...
DHCP Trial 3...
DHCP Trial 4...
DHCP Trial 5...
Unable to complete DHCP!

Port 2 IP Address Acquisition Failed.

在TI官方开发板上是能够成功的分配到IP的,但是官方的开发板配置是在

PHY found at address 0 for Port 1 of Instance 0.
Performing Auto-Negotiation...
Auto-Negotiation Successful.
Transfer Mode : 100 Mbps Full Duplex.
PHY link verified for Port 1 of Instance 0.
DHCP Trial 1...

Port 1 IP Address Assigned: 192.168.0.14