Restoring the topology

It is important to normalize the metric on the P2–P6 and P2–P7 links back from 100 to 10 so that the topology in Figure 6.1 can be prepared for the next chapter. This is shown as follows:

• On the router P2, increase the metric from 100 to 10 on the GigabitEthernet0/0/0/1 and GigabitEthernet0/0/0/3 interfaces toward the P6 and P7 routers, respectively:

  P2

  router isis IGP
  interface GigabitEthernet0/0/0/1
    address-family ipv4 unicast
     metric 10
    !
  !
  interface GigabitEthernet0/0/0/3
    address-family ipv4 unicast
     metric 10

• On the P6 router, increase the metric from 100 to 10 on the GigabitEthernet0/0/0/1 interface toward P2:

  P6

  router isis IGP
  interface GigabitEthernet0/0/0/1
    address-family ipv4 unicast
     metric 10

• On the P7 router, increase the metric from 100 to 10 on the GigabitEthernet0/0/0/3 interface toward P2:

  P7

  router isis IGP
  interface GigabitEthernet0...