Cisco – %Invalid interface type and number

I am trying to apply a scenario from the Cisco CCENT book where a 2811 Router uses VLANs. I have applied the network as is in the book inside my Packet Tracer.

Here is the section in the book and next is my implementation and the error I am getting.

//book example

Router#config t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname Corp
Corp(config)#enable secret myPassword
Corp(config)#interface vlan 1
Corp(config-if)#description myDescriptionIsAwesome1
Corp(config-if)#ip address 10.1.1.1 255.255.255.0
Corp(config-if)#no shutdown
Corp(config-if)#int f1/0
Corp(config-if)#description myDescriptionIsAwesome2
Corp(config-if)#no shutdown
Corp(config-if)#int f1/1
Corp(config-if)#description myDescriptionIsAwesome3
Corp(config-if)#no shut


//my implementation in Packet Tracer

Router#config t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#hostname Corp
Corp(config)#enable secret myPassword
Corp(config)#interface vlan 1
Corp(config-if)#description myDescriptionIsAwesome1
Corp(config-if)#ip address 10.1.1.1 255.255.255.0
Corp(config-if)#no shutdown
Corp(config-if)#
%LINK-5-CHANGED: Interface Vlan1, changed state to up
int f1/0
%Invalid interface type and number
Corp(config)#

I get the %Invalid interface type and number error.
What can be the reason? Is there anything I should add to the router after adding it in the packet tracer works space? Moreover, how do I create the Virtual Switch once I have set the router? Is it through the GUI or it is automatically done?