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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 rst (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 Reectors
• 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)
• Conguration Information
• Enabling BGP
• Conguring AS4 Number Representations
• Conguring Peer Groups
• Conguring BGP Fast Fall-Over
• Conguring 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
• Conguring IP Community Lists
• Filtering Routes with Community Lists
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