What is the best way to remember BGP path selection?

BGP Best Path Algorithm Mnemonic

1. Weight (Highest is better)
2. LOCAL_PREF (Highest is better)
3. Originated Locally.
4. AS_PATH (shortest)
5. ORIGIN Type (IGP is lower than EGP and EGP is lower than Incomplete)
6. MED (lowest is better)
7. Paths (External > Internal)
8. RID (Router ID – lowest is better)

How do I choose a path?

Here are 5 factors for determining how to choose the right path.

1. Faith and Values. As Roy Disney once said, “When your values are clear to you, making decisions becomes easier.” What does your moral foundation and faith say?
2. Experience. Your past matters a lot in these moments.
3. Positives and Negatives.
4. Patience.
5. Courage.

How do I select a path selection on a network?

1. Define your remote sites, associated subnets, uplinks for the local site, the gateway IP address, and peer IP address in the Sites & Network page.
2. Choose Networking > Network Services: Path Selection to display the Path Selection page.
3. Select Enable Path Selection.
4. Under Path Selection Rules, click + Add a Rule.

What is the correct sequence of attributes in BGP?

BGP Update Message Path Attributes: Follows the format of and contains the following two subfields:‍ Attribute Flags: Defines if the attribute is well-known, optional, transitive, or non-transitive.

What are the parameters for path selection in BGP?

The following parameters are followed for BGP’s path selection: Prefer the highest local-preference value. Prefer the shortest AS-path length. Prefer the lowest origin value. Prefer the lowest MED value. Prefer routes learned from an EBGP peer over an IBGP peer. Prefer best exit from AS. For EBGP-received routes, prefer the current active route.

Can a BGP route be associated with the next hop?

Paths for which the NEXT_HOP is inaccessible. Be sure that there is an Interior Gateway Protocol (IGP) route to the NEXT_HOP that is associated with the path. Paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH.

Why is BGP not used for load balancing?

BGP is not designed to perform load balancing and the paths are chosen because of policy, not based on bandwidth. The BGP best path selection algorithm eliminates any multiple paths until a single best path is left.

How does Border Gateway Protocol ( BGP ) work?

Border Gateway Protocol (BGP) routers typically receive multiple paths to the same destination. The BGP best path algorithm decides which is the best path to install in the IP routing table and to use for traffic forwarding.