1. Write router configurations using Packet Tracer or GNS3 software according to all the following requirements:

a) Perform IP addressing of all segments between routers, as well as IP addresses of interfaces between routers. Information on IP addressing of segments and router interfaces should be placed in a summary table. IP address of segments between routers R1, R2, R3, and R4 must be performed using Private IP addresses. IP addressing of segments between routers R3-R5 (ISP A connection) and R4-R6 (ISP connection B) must be performed using Public IP address. IP addressing of segments between routers R5-R7 and R6-R7 must be performed using Private IP addresses

b) In the LAN of the Head Office and the LAN of the Company Branch, you must perform DHCP configurations, taking into account that the first 10 addresses in the range of DHCP addresses are reserved by servers and printers. Show configurations for DHCP reservations and the right information for PCs on the LAN to get the IP configuration in Automatic mode. Indicate the range and number of IP addresses available for PCs on any LAN. 

c) Router configurations should be performed so that all traffic from the Central Office's LAN in the direction of the Company Branch LAN and vice versa, should use ISP A connection and not ISP B connection (ISP B will only be used for Backup). Tell all commands used during routing testing. 

d) Router configurations should be performed so that all traffic from the Central Office's LAN in the direction of the Company Branch LAN and vice versa, should use ISP B connection and not ISP A connection (ISP A will only be used for Backup). Tell all commands used during routing testing.

R1 R3 R1 R3 RS R5 12/0 5 f10 5 12/1 11/1 10 Company Branch Switch2 8 5 R7 VO Central Office 5 co 5 LAN B LAN A 5 R2 8 R6 Switch VFCS SPB R4 12/1 foo 270 OSPFARIA O 1 -40 Vi 25 HO R1 R3 R1 R3 RS R5 12/0 5 f10 5 12/1 11/1 10 Company Branch Switch2 8 5 R7 VO Central Office 5 co 5 LAN B LAN A 5 R2 8 R6 Switch VFCS SPB R4 12/1 foo 270 OSPFARIA O 1 -40 Vi 25 HO