Deploying DHCP Superscope

Topology:

R1-3725 image
PC1 - PC4 - 3725
DHCP Server- Virtual Box Guest

DHCP configuration: (under super scope)
 scope #1: 172.16.1.0 /24 reserved 172.16.1.1-253 leaving only 1 IP address free.
 scope #2: 172.16.2.0 /24 reserved 172.16.2.0-250 (optional)
 

Target: 3 hosts should acquire an IP Address from 172.16.2.0 /24 scope#2 as scope#1 has only 1 IP address free.  

 

 

Scope#1 172.16.1.0/24

Last free address 172.16.1.254 leased to PC4 

Scope#2 172.16.2.0 /24

3 host lease IP Addresses from scope #2

PC1#show ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            172.16.2.252    YES DHCP   up                    up     
FastEthernet0/1            unassigned      YES unset  administratively down down   
PC1#ping 172.16.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
!!!!

PC1#traceroute 172.16.1.1

Type escape sequence to abort.
Tracing the route to 172.16.1.1

  1 172.16.1.1 32 msec 40 msec 12 msec
PC1#traceroute 172.16.2.1

Type escape sequence to abort.
Tracing the route to 172.16.2.1

  1 172.16.1.1 36 msec 40 msec 20 msec
PC1#ping 172.16.2.1                                                         

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/29/56 ms