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BGP Communities: Well-Known Values and Cisco Configuration

BGP Communities: Well-Known Values and Cisco Configuration

BGP communities on Cisco IOS: well-known values, standard vs extended vs large, send-community, route-map set and match, verification and common mista

admin admin 2026-09-06
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Cisco Prefix-List and Route-Map Filtering for BGP

Cisco Prefix-List and Route-Map Filtering for BGP

Filter BGP routes with Cisco prefix-lists and route-maps: ge/le prefix matching, sequence logic, bogon filters and safe deny/permit patterns.

admin admin 2026-09-05
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BGP Best Path Selection: The 13-Step Algorithm Explained

BGP Best Path Selection: The 13-Step Algorithm Explained

BGP best path selection explained: the full 13-step Cisco order from weight and local preference through AS-path, MED and tie-breakers, with a worked

admin admin 2026-09-05
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Cisco IOS XR BGP Configuration: iBGP and eBGP Step by Step

Cisco IOS XR BGP Configuration: iBGP and eBGP Step by Step

Configure BGP on Cisco IOS XR step by step: the mandatory address-family requirement, iBGP and eBGP examples, route policies, neighbor groups and veri

admin admin 2026-09-04
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BGP Route Dampening: Penalty, Half-Life and Reuse Limits

BGP Route Dampening: Penalty, Half-Life and Reuse Limits

BGP route dampening attributes explained - penalty, suppress-limit, half-life and reuse-limit - with Cisco IOS and Junos config and tuning advice.

admin admin 2026-09-03
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BGP Route Dampening Configuration: Penalty and Reuse Limits

BGP Route Dampening Configuration: Penalty and Reuse Limits

BGP route dampening maths: how the 1000-point penalty decays, how reuse times derive from the half-life, and how to size suppress limit and max-suppre

admin admin 2026-09-02
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BGP Route Dampening: Penalty, Suppress and Reuse

BGP Route Dampening: Penalty, Suppress and Reuse

BGP route dampening configuration compared across Cisco IOS, IOS-XR, NX-OS, Junos and Huawei VRP, with verification commands and production tuning adv

admin admin 2026-09-01
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BGP Timers Explained: Hold, Keepalive, MRAI and More

BGP Timers Explained: Hold, Keepalive, MRAI and More

BGP timer reference: holddown and keepalive negotiation, ConnectRetry, MRAI for eBGP and iBGP, route refresh, flap damping, graceful restart, with IOS

admin admin 2026-08-31
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Junos BGP Flap Damping: Parameters and Configuration Guide

Junos BGP Flap Damping: Parameters and Configuration Guide

Junos BGP flap damping parameters: half-life, max-suppress, reuse and suppress defaults, the figure of merit, and how to verify damped routes.

admin admin 2026-08-31
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BGP Route Flap Damping Explained: How It Works and How to Configure It

BGP Route Flap Damping Explained: How It Works and How to Configure It

BGP route flap damping explained with a state-machine diagram and worked penalty math: half-life decay, suppress and reuse timers, and RIPE-580 tuning

admin admin 2026-08-30
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