Your First AI-Powered Troubleshooting Session
The Scenario
You are staring at a BGP neighbor that refuses to come up. You have run show ip bgp summary and see the neighbor stuck in Active state. You have checked the basics — IP reachability, ASN config — but something is off and you are burning time.
Instead of scrolling through Cisco documentation for 30 minutes, you paste the output into AI and get your answer in 30 seconds.
The Prompt
Copy this into ChatGPT or Claude and replace the output with your own:
I have a BGP neighbor stuck in Active state on a Cisco IOS-XE router. Here is my config and show output:
router bgp 65001
neighbor 10.1.1.2 remote-as 65002
neighbor 10.1.1.2 update-source Loopback0
neighbor 10.1.1.2 ebgp-multihop 2
show ip bgp summary:
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.1.1.2 4 65002 0 0 1 0 0 never Active
show ip route 10.1.1.2:
10.1.1.2/32 is directly connected via GigabitEthernet0/1
What is wrong and how do I fix it?
What AI Gives You
The AI will identify that you configured update-source Loopback0 but the route to 10.1.1.2 shows it is directly connected on Gi0/1 — meaning the neighbor expects traffic from your Loopback IP, but eBGP by default uses the outgoing interface. The fix:
- Either remove
update-source Loopback0(if peering over a direct link) - Or ensure the remote side has
ebgp-multihopconfigured and a route back to your Loopback
AI will also flag that ebgp-multihop 2 might need to be increased depending on the topology.
Review and Validate
Before applying any AI suggestion:
- Does the logic make sense? Read the explanation, not just the command
- Is this my exact IOS version? Syntax can vary between IOS, IOS-XE, NX-OS
- Test in lab first if possible, or during a maintenance window
Try It Yourself
Grab any show output from a real device where something is not working as expected. Paste it into ChatGPT or Claude with the question: "What is wrong and how do I fix it?"
You will be surprised how fast it narrows down the issue.