Unable to assign the ip address

General
1

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Hello Atul sir,

I have created this topology for ospf stub but I am unable to assign the ip address for R1 router. only I can configure Ip address for 2 interfaces. remaining interface i unable configure, what is the issue?

Please clarify.

2

You have added the wrong network module in the Router.
Use 2811 Router in Packet Tracer