1. Connecting an Enterprise Network to an ISP Network
Lab 6-1 Debrief
Connecting an Enterprise Network to an ISP Network

2. Lab Topology

3. Lab Review: What did you accomplish?
Task 1 – Cleaning Up
What steps did you take to remove unnecessary configuration?
How did you create the initial configuration?
Task 2 – Configuring BGP
What is needed to configure basic BGP?
What steps did you take to configure neighbors, advertise networks, and verify the configuration?
Task 3 – Configuring BGP authentication
Which authentication type did you select?
How can you verify MD5 authentication?

4. Verification Is your solution working?
What method did you follow to verify the status of all BGP connections?
Which commands did you use to verify the following information?
Display information about BGP and TCP connections to neighbors
Display the parameters and current state of the active routing protocol process
Display entries in the BGP routing table

5. Check Points BGP process and AS number Neighbor relationship status
Advertise networks
BGP routing information base
BGP routes
BGP protocol
Default route
Authentication

6. Sample Solution Configure BGP process Define neighbors
Advertise networks
Define default route
Configure authentication

7. Alternative Solutions
BGP process
Different AS numbers and connectivity options
EBGP/IBGP neighbors
update-source command
Advertise networks
next-hop-self, synchronization

8. Q and A Why is the AS number important?
Why is the neighbor IP address important?
Why is authentication necessary?

9. Summary
Create a good implementation plan and define the BGP requirements before configuring BGP operations.
Several solutions exist and alternative solutions give similar or very different results.