Reference Guide

Border Gateway Protocol IPv4 (BGPv4) | 171

Border Gateway Protocol IPv4 (BGPv4)

Border Gateway Protocol IPv4 (BGPv4) version 4 (BGPv4) is supported on the S5000 switch.

This chapter is intended to provide a general description of Border Gateway Protocol version 4 (BGPv4) as

it is supported in the Dell Networking OS.

This chapter includes the following topics:

• Protocol Overview

• Autonomous Systems (AS)

• Sessions and Peers

• Route Reflectors

• Confederations

• BGP Attributes

• Best Path Selection Criteria

• Weight

• Local Preference

• Multi-Exit Discriminators (MEDs)

• Origin

• AS Path

• Next Hop

• Multiprotocol BGP

• Implementing BGP with Dell Networking OS

• Additional Path (Add-Path) support

• Advertising IGP cost as MED for redistributed routes

• Ignoring Router-ID for some best-path calculations

• 4-Byte AS Numbers

• AS4 Number Representation

• AS Number Migration

• BGP4 Management Information Base (MIB)

• Important Points to Remember

• Configuration Information

• BGP Configuration

• Configuration Task List for BGP

• MBGP Configuration