failing to assigning ip address successfully.

[jahedhussein]

i have been tasked with creating an internetwork with different workgroups. i am currently trying to connect a WAN link router to a switch but i am having issues when assigning the switch an ip address. when i try to do so, i get the error message "133.221.192.49 255.255.255.0 overlaps with GigabitEthernet6/0". 

i have sat at this issue for the past almost 2 hours, and cannot get my head around it. i would appreciate any help. 

p.s. my explanation is very brief but i tried to make it as simple as possible.

[Georg Pauwen]

Hello,

post the running configurations (sh run) of both the router and the switch, and indicate which interfaces are used to connect them.

[Martin L]

Every L3 device has simple rule of "each of my interfaces must be connected to a different network/subnet".  This rule is always applied to the same device and same routing instance (as u could have multiple VRFs)

So, error "133.221.192.49 255.255.255.0 overlaps with GigabitEthernet6/0" simply says there is another  IP already configured on subnet 133.221.192.x /24

what is current IP of GigabitEthernet6/0 ? or all your IPs , use show ip interface brief

Regards, ML
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