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Routing & Switching

Why some switches show an MTU of 1522 and some like Cisco show 1500

There’s no issue here. Cisco is just showing Ethernet MTU, which is 1500. There are 18 header bytes and 4...
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Routing & Switching

Cisco and VLAN 1

In Cisco switches, VLAN 1 refers to the default VLAN that is created automatically when the switch is initialized or...
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Data CenterRouting & Switching

Cisco SSO vs NSF Operations

Stateful Switchover (SSO) Operation SSO makes one of the supervisor engines active while the other is on standby. SSO then...
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Data CenterRouting & Switching

Cisco ACI Control Plane vs Data Plane

Data Plane — Handles all the data traffic. The basic functionality of a Cisco NX-OS device is to forward packets...
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Routing & Switching

Cisco Nexus – Upgrading with In-Service Software Upgrade (ISSU)

In the fast-paced world of networking, system uptime is a top priority. When upgrading network infrastructure, minimizing downtime is essential....
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Routing & Switching

Cisco Stacks – Network Upgrades with ISSU and Cisco StackWise Virtual

In today’s fast-paced world, network reliability and uptime are critical for any business. However, network administrators often face a daunting...
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Data CenterRouting & SwitchingSecurity

PCI – Cisco Recommendation and Best Practices

Cisco offers a broad range of networking devices, including routers and switches, that are used in various environments, from small...
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Data CenterRouting & Switching

Underlay vs Overlay Networks

In IT networking, overlay networks and underlay networks refer to different layers or perspectives of network architecture. Here’s an explanation...
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Data Center

Cisco ACI Auto-Negotiation and Forward Error Correction

New and Changed Information The following table provides an overview of the significant changes up to the current release. The...
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Routing & SwitchingServers

Network Speed and Throughput Issues – Some Things to Look For

I wrote a post about using iperf, a tool to test network speed and throughput. I just want to quickly...
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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
  • IP Calculator
  • Links
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Categories

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

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