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

Lab Topology

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?

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

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

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

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

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

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.