Complete Teaching of BGP by ArashDeljoo

Border Gateway Protocol (BGP) Concepts and Configurations

Ratings 4.77 / 5.00

What You Will Learn!

BGP Fundamentals
eBGP Neighborship
BGP Keep Alive
BGP Messages and Neighborship States
Injecting Routes into BGP Table
BGP Automatic Summarization
BGP Basic Aggregation
BGP Atomic Aggregate , Aggregator Attribute
BGP Advanced Aggregation
BGP Origin Code Path Attribute
BGP Advanced Aggregation
BGP Backdoor
BGP Next-Hop Path Attribute
Internal BGP [iBGP]
BGP Peer Group
iBGP Neighborship with Loopback Interfaces
BGP Confederation
BGP Route Reflector
BGP Route Reflector Redundancy
BGP Route Reflection with Multiple Clusters
BGP Hierarchical Route Reflection
BGP Default Route Advertisement
BGP Best Path Selection - Weight
BGP Best Path Selection - Weight
BGP Best Path Selection - Weight
BGP Best Path Selection - Local Weight
BGP Best Path Selection - Local Preference
BGP Best Path Selection - Preference of Locally Injected Path
BGP Best Path Selection - Accumulated IGP [AIGP]
BGP Best Path Selection - AS-Path
BGP Best Path Selection - Origin Code
BGP Best Path Selection - Multi Exit Discriminator [MED]
BGP Advanced MED - Always Compare MED
BGP Advanced MED - Missing-as-worst
BGP Best Path Selection - Prefer eBGP to iBGP Path
BGP Best Path Selection - Lowest IGP Metric to Next-Hop
BGP Best Path Selection - Oldest eBGP Route
BGP Best Path Selection - Lower BGP Router-ID
BGP Best Path Selection - Minimum Cluster-List Length
BGP Best Path Selection - Lowest Neighbor IP
MultiPath Equal Cost Load Balancing [ECLB]
MultiPath Unequal Cost Load Balancing [UCLB]
Route Filtering with ACL
Route Filtering with IP Prefix-List
Route Filtering with Route-Map
Route Filtering with AS-Path ACL
BGP Regular Expressions - REGEXPs
BGP Hard Clearing , Soft Clearing
BGP Outbound Route Filtering [ORF]
BGP Community
BGP Maximum Prefix
BGP Remove Private AS Number
BGP Allow AS
Dynamic iBGP Peer Group
Dynamic eBGP Peer Group
BGP Path Attributes
BGP Fast Neighbor Loss Detection
BGP Route-Reflector with Full Mesh Client
BGP Multi Cluster ID [ MCID ]
BGP Selective Route Download
BGP Diverse Path with Shadow Co-located RR
BGP Diverse Path with Shadow Co-located RR
BGP Diverse Path with Shadow Session
BGP Single Homed Connection
BGP Floating Static Route
BGP Multiprotocol BGP [ MBGP ]
BGP TTL Security
BGP Dynamic Update Peer-Group
BGP Max AS
BGP Multi Session Capability
BGP Route Server
BGP Route Server Context
BGP Router-ID in IOS-XR
BGP Neighborship in IOS-XR
BGP Prefix Advertisement in IOS-XR
BGP Peering via Loopback Addresses in IOS-XR
BGP Next-hop Modification in IOS-XR
BGP Route Reflector in IOS-XR
BGP Router-ID in NX-OS
BGP Neighborship in NX-OS
BGP Prefix Advertisement in NX-OS
BGP Peering via Loopback Addresses in NX-OS
BGP Next-hop Modification in NX-OS
BGP Route Reflector in NX-OS

Description

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.

BGP used for routing within an autonomous system is called Interior Border Gateway Protocol, Internal BGP (iBGP). In contrast, the Internet application of the protocol is called Exterior Border Gateway Protocol, External BGP (eBGP).

It was first described in 1989 in RFC 1105, and has been in use on the Internet since 1994. IPv6 BGP was first defined in RFC 1654 in 1994, and it was improved to RFC 2283 in 1998.

The current version of BGP is version 4 (BGP4), which was published as RFC 4271 in 2006. RFC 4271 corrected errors, clarified ambiguities and updated the specification with common industry practices. The major enhancement was the support for Classless Inter-Domain Routing (CIDR) and use of route aggregation to decrease the size of routing tables. The new RFC allows BGP4 to carry a wide range of IPv4 and IPv6 "address families". It is also called the Multiprotocol Extensions which is Multiprotocol BGP (MP-BGP).