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Border Gateway Protocol IPv4 (BGPv4)
Border gateway protocol IPv4 (BGPv4) version 4 (BGPv4) is supported on Dell Networking OS
This chapter provides a general description of BGPv4 as it is supported in the Dell Networking operating system (OS).
BGP is an external gateway protocol that transmits interdomain routing information within and between autonomous systems
(AS). The primary function of the BGP is to exchange network reachability information with other BGP systems. BGP generally
operates with an internal gateway protocol (IGP) such as open shortest path first (OSPF) or router information protocol (RIP),
allowing you to communicate to external ASs smoothly. BGP adds reliability to network connections by having multiple paths
from one router to another.
Topics:
Autonomous Systems (AS)
Sessions and Peers
Route Reflectors
Communities
BGP Attributes
Weight
Local Preference
Origin
AS Path
Next Hop
Multiprotocol BGP
Implement BGP with Dell Networking OS
AS Number Migration
BGP4 Management Information Base (MIB)
Configuration Information
Enabling BGP
Configuring AS4 Number Representations
Configuring Peer Groups
Configuring BGP Fast Fall-Over
Configuring Passive Peering
Maintaining Existing AS Numbers During an AS Migration
Allowing an AS Number to Appear in its Own AS Path
Enabling Graceful Restart
Enabling Neighbor Graceful Restart
Filtering on an AS-Path Attribute
Filtering BGP Routes Using AS-PATH Information
Redistributing Routes
Enabling Additional Paths
Configuring IP Community Lists
Filtering Routes with Community Lists
Manipulating the COMMUNITY Attribute
Changing MED Attributes
Changing the LOCAL_PREFERENCE Attribute
Configuring the local System or a Different System to be the Next Hop for BGP-Learned Routes
Changing the WEIGHT Attribute
Enabling Multipath
Filtering BGP Routes Using Route Maps
Filtering BGP Routes Using AS-PATH Information
Filtering BGP Routes
Configuring BGP Route Reflectors
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