What is the metric for BGP?
BGP MED attribute
The BGP MED attribute, commonly referred to as the BGP metric, provides a means to convey to a neighboring Autonomous System (AS) a preferred entry point into the local AS. BGP MED is a non-transitive optional attribute and thus the receiving AS cannot propagate it across its AS borders.
What is the default MED value in BGP?
If BGP Best Path is selected via MED (metric) attribute, the Lowest MED (metric) value is better and it is selected as BGP path. The default MED value is 0.
How do you set BGP to metric?
MED (or metric) is the sixth BGP attribute:
- MED can be used to advertise to your neighbors how they should enter your AS.
- MED is exchanged between autonomous systems.
- The lowest MED is the preferred path.
- MED is propagated to all routers within the neighbor AS but not passed along any other autonomous systems.
What are three well-known mandatory BGP attributes?
BGP Path Attributes
- Well-Known Mandatory (for example: Origin, AS Path, and Next Hop)
- Well-Known Discretionary (for example: Local Preference)
- Optional Transitive (for example: Community)
- Optional Non-Transitive (for example: Cluster List)
What is BGP path selection criteria?
BGP Path Selection Criteria If weight is not set, choose the route with the highest local preference. Choose routes that this router originated. Choose the path with the shortest Autonomous System path. Choose the path with the lowest origin code (i is lowest, e is next,? is last).
What are the major features of BGP?
BGP Features BGP Routing as a role service of Remote Access. BGP Statistics (Message counters, Route counters) The BGP Router supports displaying the message and route statistics, if required, by using the Get-BgpStatistics Windows PowerShell command. Equal Cost Multi Path Routing (ECMP) support. Internal BGP and External BGP support.
What is the concept of BGP?
Border Gateway Protocol ( BGP) is a standardized exterior gateway protocol designed to exchange routing and reachability information among autonomous systems (AS) on the Internet. BGP is classified as a path-vector routing protocol, and it makes routing decisions based on paths, network policies, or rule-sets configured by a network administrator .
What is BGP redistribute internal?
The command “bgp redistribute-internal” allow sthe redistribution of iBGP routes into an interior gateway protocol such as IS-IS or OSPF non in to other iBGP peer. By default, iBGP does not propagate to other
What is BGP med?
The BGP MED attribute, commonly referred to as the BGP metric, provides a means to convey to a neighboring Autonomous System (AS) a preferred entry point into the local AS. BGP MED is a non-transitive optional attribute and thus the receiving AS cannot propagate it across its AS borders. However,…