Lesson 2 of 10

Config Generation on Demand

The Scenario

You need to configure OSPF on a new IOS-XE router with 3 interfaces in area 0, MD5 authentication, and passive-interface default. Normally you would dig through old configs or documentation. Instead, you describe exactly what you need and AI generates it instantly.


The Prompt

Generate a Cisco IOS-XE configuration for:
- OSPF process 1, router-id 1.1.1.1
- Area 0 with these interfaces:
  - GigabitEthernet0/0: 10.0.1.1/24
  - GigabitEthernet0/1: 10.0.2.1/24
  - Loopback0: 1.1.1.1/32
- MD5 authentication on all interfaces (key 1, password "0spfS3cure")
- Passive-interface default, only Gi0/0 and Gi0/1 active
- Redistribute connected subnets
- Add comments explaining each section

What AI Gives You

A clean, commented configuration block ready to paste:

! OSPF Configuration
router ospf 1
 router-id 1.1.1.1
 passive-interface default
 no passive-interface GigabitEthernet0/0
 no passive-interface GigabitEthernet0/1
 network 10.0.1.0 0.0.0.255 area 0
 network 10.0.2.0 0.0.0.255 area 0
 network 1.1.1.1 0.0.0.0 area 0
 redistribute connected subnets

! MD5 Authentication on OSPF interfaces
interface GigabitEthernet0/0
 ip ospf authentication message-digest
 ip ospf message-digest-key 1 md5 0spfS3cure

interface GigabitEthernet0/1
 ip ospf authentication message-digest
 ip ospf message-digest-key 1 md5 0spfS3cure

Review and Validate

  • Does the wildcard mask match your subnet? AI sometimes flips /24 and 0.0.0.255
  • Is redistribute connected subnets what you actually want? Could cause routing loops
  • Check the MD5 key ID matches on both sides of each adjacency

Try It Yourself

Think of the next config you need to write — a VLAN setup, an ACL, a NAT rule. Describe it in plain English with all the specific values, and let AI generate it. Compare the output against what you would have written manually.