Hello,
I am trying to configure on a Catalyst 1000 switch a DHCP Server on network 192.168.1.0/24 with a fixed IP address of 192.168.1.10 for a PC Network with a specific MAC address.
Here is the steps I followed :
1) Type commands on Switch
conf t
ip dhcp pool 192.168.1.0
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
exit
int vlan 1
ip address pool 192.168.1.0
exit
ip dhcp pool PC
host 192.168.1.10
hardware-address 01xx.xxxx.xxxx.xx
exit
do sh ip dhcp pool
2) Check on Switch
Pool 192.168.1.0 :
Utilization mark (high/low) : 100 / 0
Subnet size (first/next) : 0 / 0
Total addresses : 254
Leased addresses : 0
Excluded addresses : 1
Pending event : none
1 subnet is currently in the pool :
Current index IP address range Leased/Excluded/Total
192.168.1.1 192.168.1.1 - 192.168.1.254 0 / 1 / 254
Pool PC :
Utilization mark (high/low) : 100 / 0
Subnet size (first/next) : 0 / 0
Total addresses : 1
Leased addresses : 1
Excluded addresses : 1
Pending event : none
0 subnet is currently in the pool :
Current index IP address range Leased/Excluded/Total
192.168.1.10 192.168.1.10 - 192.168.1.10 1 / 1 / 1
3) Type commands on Switch
do clear ip dhcp binding *
4) Type commands on PC
ipconfig /release && ipconfig /renew
No IP delivered
5) Type commands on Switch
do sh interfaces
6) Check
Vlan1 is up, line protocol is up
Hardware is EtherSVI, address is XXXX.XXXX.XXXX (bia XXXX.XXXX.XXXX)
Internet address will be autoconfigured from local DHCP pool
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not supported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:22:34, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 packets output, 0 bytes, 0 underruns
0 output errors, 2 interface resets
1704 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
GigabitEthernet1/0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is XXXX.XXXX.XXXX (bia XXXX.XXXX.XXXX)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:01:18, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 3000 bits/sec, 3 packets/sec
34620 packets input, 8502653 bytes, 0 no buffer
Received 4427 broadcasts (3590 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 3590 multicast, 0 pause input
0 input packets with dribble condition detected
62613 packets output, 37744232 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
7) Type commands on Switch
int gigabitEthernet 1/0/1
shutdown
no shutdown
exit
do sh ip dhcp binding
Check
Bindings from all pools not associated with VRF:
IP address Client-ID/ Lease expiration Type State Interface
Hardware address/
User name
192.168.1.10 01xx.xxxx.xxxx.xx Infinite Manual Selecting Unknown
9) Type commands on PC
ipconfig /renew
No IP delivered
10) Type commands on Switch
ip dhcp pool 192.168.1.0
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
address 192.168.1.10 hardware-address 01xx.xxxx.xxxx.xx
% Address 192.168.1.10 is not valid in this pool.
exit
int vlan 1
ip address 192.168.1.2 255.255.255.0
exit
11) Type commands on PC
ipconfig /renew
=> Got 192.168.1.3
12) Type commands on Switch and Check
(config)#do sh ip dhcp binding
Bindings from all pools not associated with VRF:
IP address Client-ID/ Lease expiration Type State Interface
Hardware address/
User name
192.168.1.1 XXXX.XXXX.XXXX Apr 22 2021 12:57 AM Automatic Active Vlan1
192.168.1.3 01xx.xxxx.xxxx.xx Apr 22 2021 12:58 AM Automatic Active Vlan1
192.168.1.10 01xx.xxxx.xxxx.xx Infinite Manual Selecting Unknown
(config)#do sh ip dhcp pool
Pool 192.168.1.0 :
Utilization mark (high/low) : 100 / 0
Subnet size (first/next) : 0 / 0
Total addresses : 254
Leased addresses : 2
Excluded addresses : 1
Pending event : none
1 subnet is currently in the pool :
Current index IP address range Leased/Excluded/Total
192.168.1.4 192.168.1.1 - 192.168.1.254 4 / 3 / 254
Pool PC :
Utilization mark (high/low) : 100 / 0
Subnet size (first/next) : 0 / 0
Total addresses : 1
Leased addresses : 1
Excluded addresses : 1
Pending event : none
0 subnet is currently in the pool :
Current index IP address range Leased/Excluded/Total
192.168.1.10 192.168.1.10 - 192.168.1.10 1 / 1 / 1
So I have an IP address but not using the one that is matching to the correct fixed pool.
