Overlapping error issue

[kevinmcdonough]

You’ve been given the IPv4 network address 172.16.0.0/20 for your internal LAN network. Statically assign the IPv4 addresses to the equipment per the addressing assignment table.

Device	Interface	IP Address	Subnet Mask	Default Gateway
LAN Router	G0/1	172.16.0.1	255.255.240	N/A
	S0/0/0	13.13.13.2	255.255.255.252	N/A
Switch	VLAN 1	172.16.0.2	255.255.240.0	172.16.0.1
Server	Fa0	172.16.0.3	255.255.240.0	172.16.0.1
Printer	Fa0	172.16.0.4	255.255.240.0	172.16.0.1
Wireless LAN Controller	G0	172.16.0.5	255.255.240.0	172.16.0.1
LWAP	G0	172.16.0.6	255.255.240.0	N/A

I am getting an overlapping error when assigning

Interface vlan 1

ip address 172.16.0.2 255.255.240.0

"172.16.0.0 overlaps with GigabitEthernet0/1"

I'm having trouble figuring out how to resolve this, it is a school project done in packet tracer.

[Reza Sharifi]

"172.16.0.0 overlaps with GigabitEthernet0/1"

It appears that g0/1 has an ip address in 172.16.0.0 range.

What is the output of "sh run int g0/1"?

HTH

[kevinmcdonough]

I assumed the 255.255.240 was typo and assigned

interface g0/1

ip address 172.16.0.1 255.255.240.0

[kevinmcdonough]

R1#show interfaces g0/1
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is CN Gigabit Ethernet, address is 0001.c98a.8102 (bia 0001.c98a.8102)
Internet address is 172.16.0.1/20

[Reza Sharifi]

172.16.0.1/20 overlaps with the IP address for vlan 1 (

172.16.0.2

255.255.240.0)

So, change gi interface IP to something else. example: 172.16.20.1/20

and you should be fine.

HTH