BGP
Day 37 — Why iBGP Full Mesh Does Not Scale
1. Opening iBGP does not automatically relay every route learned from another iBGP peer. That behavior prevents simple internal loops but c...
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BGP
RETICUX BGP Mastery — Day 36 --- Dual-Provider Traffic-Engineering Capstone
1. Opening A production multihoming design must work as a system. Outbound and inbound engineering are different problems, and a design tha...
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BGP
Day 35 --- Hot-Potato vs Cold-Potato Routing
1. Opening Hot-potato routing hands traffic to another AS at the nearest acceptable exit. Cold-potato routing intentionally carries traffic...
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BGP
Day 34 --- Provider Communities for Inbound Traffic Engineering
1. Opening Many providers publish communities that customers can attach to routes to request specific upstream actions. These can be more p...
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BGP
Day 33 --- AS-Path Prepending as Inbound Traffic Engineering
1. Opening AS-path prepending makes one advertisement appear longer by repeating the local ASN. It can influence remote path selection, but...
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BGP
Day 32 --- Selective Advertisement and More-Specific Traffic Engineering
1. Opening Selective advertisement controls which prefixes each provider receives. Advertising a more-specific route can attract traffic be...
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BGP
Day 31 --- Conditional Advertisement with advertise-map, exist-map and non-exist-map
1. Opening Conditional advertisement is useful when a route should be announced only while another BGP condition exists---or only while it ...
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BGP
RETICUX BGP Mastery — Day 30 BGP Policy Changes Without Flapping: Route Refresh, Soft Reset and Safe Rollback
BGP Policy Changes Without Flapping: Route Refresh, Soft Reset and Safe Rollback Opening A policy change should not automatically become a...
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BGP
RETICUX BGP Mastery Day 29- BGP Import and Export Policy: The RFC 8212 Safety Boundary
BGP Import and Export Policy: The RFC 8212 Safety Boundary Opening An EBGP session is a routing boundary between administrative domains. T...
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BGP
RETICUX BGP Mastery Day 28- BGP Policy Match Tools: Prefix Lists, AS-Path ACLs and Community Lists —
BGP Policy Match Tools: Prefix Lists, AS-Path ACLs and Community Lists BGP Policy Match Tools: Prefix Lists, AS-Path ACLs and Community List...
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BGP
RETICUX BGP Mastery -Day 27 - BGP Large Communities: Policy That Survives Four-Byte ASNs —
BGP Large Communities: Policy That Survives Four-Byte ASNs Opening The original community format was designed around two-octet ASNs. Moder...
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