Kerry CorderoPractical Network Engineering Notes
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BGP

Data CenterRouting & Switching

Cisco BGP Multipath Relax Explained: When Different AS Paths Can Qualify for ECMP

Cisco BGP normally selects one best path for each prefix. Even when multiple routes have the same local preference, AS-path...
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Routing & Switching

From Peer-Groups to Update-Groups: A Look at BGP Efficiency

Border Gateway Protocol (BGP) plays a pivotal role in the networking world, governing how routers share information about the paths...
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Data CenterRouting & Switching

Microsoft – Experiences with BGP in Large Scale Data Centers

Routing & Switching

BGP 101

Introduction The Border Gateway Protocol (BGP) uses a path-vector routing algorithm to exchange routing information between BGP speakers. The routing...
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Routing & Switching

Route Leaking in VRF Lite – Enabling Communication between VRFs

Virtual Routing and Forwarding (VRF) Lite is a technology used to achieve routing separation in IP networks without MPLS support....
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Routing & Switching

Understanding BGP Routing Tables: Adj-RIBs-In, Loc-RIB, and Adj-RIBs-Out

The Border Gateway Protocol (BGP) is one of the most essential and complex protocols in network routing. Despite its complexity,...
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Routing & Switching

BFD – Bidirectional Forwarding Detection

BFD, which stands for Bidirectional Forwarding Detection, is a protocol used to detect faults within a network. Specifically, it is...
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Routing & Switching

Understanding the BGP Finite State Machine: From IDLE to ESTABLISHED

The Border Gateway Protocol (BGP) is the backbone routing protocol of the internet, allowing different autonomous systems (AS) to exchange...
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Routing & Switching

Checking the RIB for RIP, OSPF, EIGRP, BGP, & IS-IS

RIP – “sh ip rip database” OSPF – OLD > “sh ip ospf database” NEW > “sh ip ospf rib...
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Routing & Switching

Advertising Routes in BGP: Network vs Redistribute Connected

In Border Gateway Protocol (BGP), managing how routes are advertised is critical for network stability and efficiency. Two common methods...
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  • Home
  • About
  • Disclaimer
  • Guides and Slides
    • AWS Well-Architected Framework
    • Facebook – Running BGP in the Data Center at Scale
    • Microsoft – Experiences with BGP in Large Scale Data Centers
    • Palo Alto PCNSE Study Guide
  • Tools
    • Car Calculator
    • IP Calculator
    • RouteAgg
    • Subnet Breakout
    • Time Zone Converter
    • VSLM
  • Links
  • Contact

Categories

  • AI
  • Business Management
  • Cloud
  • Code
  • Data Center
  • Laptops & Desktops
  • Load Balancing
  • Routing & Switching
  • Security
  • Servers
  • Uncategorized
  • VOIP
  • Wireless

Tags

Active Directory (AD) AI AWS Azure Best Practices BGP Certificates Cisco Cisco ACI Cisco ASA Cisco ASR Cisco Catalyst Cisco CLI Cisco ISE Cisco Nexus Design DNS EIGRP F5 HTTP(S) IP Addressing and Subnetting Microsoft IIS Microsoft SQL Microsoft Windows Netflow OSPF Packet Capture Palo Alto Palo Alto CLI PDF Planning Ports PowerShell python QOS snmp Spanning-Tree Splunk SSL Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
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