In this ticket, check the IP on Client1, if it gets 169.x.x.x then use the “show run” command on R4. If you see the “ip dhcp exclude 10.2.1.1-1.10.2.1.253″ then the DHCP range has been misconfigured.
Configuration on R4 was:
!
ip dhcp exclude 10.2.1.1-10.2.1.253
!
Ans1) R4
Ans2) DHCP
Ans3) on R4 delete ip dhcp exclude 10.2.1.1-10.2.1.253 and apply ip dhcp-excluded 10.2.1.1-10.2.1.2
Configuration on R4 was:
!
ip dhcp exclude 10.2.1.1-10.2.1.253
!
Ans1) R4
Ans2) DHCP
Ans3) on R4 delete ip dhcp exclude 10.2.1.1-10.2.1.253 and apply ip dhcp-excluded 10.2.1.1-10.2.1.2