Refer to the exhibit. A network administrator issues the show bgp ipv4 unicast 10.1.1.0 command on router R1 to verify that the network 10.1.1.0 is in the BGP table. The administrator notices that there are two routes to reach the network. Which BGP path attribute is used to determine the best-path?

Refer to the exhibit. A network administrator issues the show bgp ipv4 unicast 10.1.1.0 command on router R1 to verify that the network 10.1.1.0 is in the BGP table. The administrator notices that there are two routes to reach the network. Which BGP path attribute is used to determine the best-path?

• AIGP
• weight
• BGP RID
• origin code

Explanation: Cisco routers review BGP attributes in the following ranked order when deciding which path is the best-path:

1. Prefer the highest weight.
2. Prefer the highest local preference.
3. Prefer the route originated by the local router.
4. Prefer the path with the shorter Accumulated Interior Gateway Protocol (AIGP) metric attribute.
5. Prefer the shortest AS_Path.
6. Prefer the lowest origin code.
7. Prefer the lowest multi-exit discriminator (MED).
8. Prefer an external path over an internal path.
9. Prefer the path through the closest IGP neighbor.
10. Prefer the oldest route for EBGP paths.
11. Prefer the path with the lowest neighbor BGP RID.
12. Prefer the path with the lowest neighbor IP address.

In this case, since path attributes 1-9 are either not configured, not used, or equal, BGP RID is used to determine the best-path.

Exam with this question: Chapter 14: Quiz - Troubleshooting BGP CCNPv8 ENARSI