Ip address overlaps

[Mailson]

Who can help me?

In this small labo, what am i doing wrong?

I cant configure the Ip's on the Vlans its overlaping or badmask. 

[Martin L · Accepted solution]

wrong Mask of /16 -255.255.0.0, aka class B
if use /24 which is 255.255.255.0 -class C, the problem will go away

Overlap happens due to /16 means network id uses octets 1 and 2; and hosts are in 3, 4.  

Use 192.168.10.x /24 on fa0/0 and 192.168.20.x /24 on fa0/1

Regards, ML
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[Mailson · Accepted solution]

Hi Martin,

Yeah, problem solved.

As u said, it was the wrong Mask /16.

Thank you

Kind regards,

Mailson.