% IP addresses may not be configured on L2 links.

[REGOLAZ]

Hi,

Have a great day!

I'm Heshan Yasas Kavinda and I am studying CCNA, I Have a CISCO 1905 k9 Router with an EHWIC 4ESG 4 Port Card.

when I assign their IP address for the port it says "% IP addresses may not be configured on L2 links."

TesTR1#show ip Interface Brief
Interface IP address OK? Method Status Protocol
Embedded-Service-Engine0/0 unassigned YES unset administratively down down
GigabitEthernet0/0 192.168.2.254 YES manual down down
GigabitEthernet0/1 192.168.1.100 YES DHCP up up
Serial0/0/0 unassigned YES unset administratively down down
GigabitEthernet0/1/0 unassigned YES unset down down
GigabitEthernet0/1/1 unassigned YES unset down down
GigabitEthernet0/1/2 unassigned YES unset down down
GigabitEthernet0/1/3 unassigned YES unset down down
NVI0 192.168.1.100 YES unset up up
Vlan1 unassigned YES unset down down
TesTR1#
above mentioned in red color ports are the EHWIC 4ESG pors these are the ports that I want to assign the IPs.

TesTR1(config)#interface gig
TesTR1(config)#interface gigabitEthernet 0/1/0
TesTR1(config-if)#ip add
TesTR1(config-if)#ip address 192.168.5.10 255.255.255.0

% IP addresses may not be configured on L2 links.

TesTR1(config-if)#

It says Can not able please help me to solve this matter.

best regards 

Heshan Yasas Kavinda

[MHM Cisco World]

TesTR1(config)#interface gig
TesTR1(config)#interface gigabitEthernet 0/1/0
TesTR1(config-if)#no switchport 
TesTR1(config-if)#ip address 192.168.5.10 255.255.255.0

[mohamedlamine]

you have to add the commande "no switchport" under the interface before assigning ip addresse  

[Richard Burts]

Heshan Yasas Kavinda

While  gigabitEthernet 0/0 and  gigabitEthernet 0/1 are layer 3 interfaces and can successfully be configured with IP addresses,  gigabitEthernet 0/1/0 is part of a switch module. And as such it functions as a layer 2 interface. As such attempts to configure IP address on the interface will fail. As other have pointed out configuring the interface with no switchport is one way to assign an IP address.