eu refiz o processo e deu certo. seguem os comando que utilizei
Router(config)#interface gi
Router(config)#interface gigabitEthernet 0/1
Router(config-if)#no shut
Router(config-if)#no shutdown
Router(config-if)#
%LINK-5-CHANGED: Interface GigabitEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to up
Router(config-if)#ip
Router(config-if)#ip ad
Router(config-if)#ip address 191.168.1.90
% Incomplete command.
Router(config-if)#ip address 191.168.1.90 255.255.255.0
Router(config-if)#^Z
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#pin
Router#ping 191.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 191.168.1.1, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 0/0/0 ms
Router#configur
Router#configure ter
Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#inter
Router(config)#interface giga
Router(config)#interface gigabitEthernet 0/0
Router(config-if)#no sh
Router(config-if)#no shutdown
Router(config-if)#
%LINK-5-CHANGED: Interface GigabitEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to up
Router(config-if)#ip ad
Router(config-if)#ip address 192.168.1.90 255.255.255.0
Router(config-if)#^Z
Router#
%SYS-5-CONFIG_I: Configured from console by console
^Z
Router#ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 0/0/0 ms
Router#ping 191.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 191.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/1 ms
Router#ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/1 ms