Preparing the base topology

Implement the provided configuration to establish the desired topology shown in Figure 10.1. This topology will be used to explore TI-LFA node protection and TI-LFA SRLG protection (in the next chapter and onwards):

• Increase the metric on the P6 router for the link connecting to the P7 router from 10 to 100:

  P6

  router isis IGP
  interface GigabitEthernet0/0/0/0
    address-family ipv4 unicast
     metric 100

• Increase the metric on the P7 router for the link connecting to the P6 and P4 routers from 10 to 100:

  P7

  router isis IGP
  interface GigabitEthernet0/0/0/0
    address-family ipv4 unicast
     metric 100
    !
  !
  interface GigabitEthernet0/0/0/4
    address-family ipv4 unicast
     metric 100

• Increase the metric on the P4 router for the link connecting to the P7 router from 10 to 100:

  P4

  router isis IGP
  interface GigabitEthernet0/0/0/4
    address-family ipv4 unicast
  &...