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Cisco Troubleshooting Interface Issues

In my case I was troubleshooting an interface that had to be 100Mb. But these commands can be used on...
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Laptops & DesktopsRouting & SwitchingVOIP

iperf and QOS/TOS Settings

iPerf is a tool for active measurements of the maximum achievable bandwidth on IP networks. It supports tuning of various...
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Routing & SwitchingSecurity

Cisco SNMPv3 Config

Below is a working config:...
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Routing & Switching

Cisco 3850 Upgrade IOS (Includes Stacking)

Step 1 – Copy the new image to the 3850...
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Routing & SwitchingWireless

Copy Configs via TFTP

Routing & Switching

Cisco Nexus IOS Upgrade (Disruptive/Non-ISSU)

This will upgrade from 5.1 to 7.3. Unfortunately because the IOS is so far back, you can’t use ISSU....
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Routing & Switching

BGP Address-Family and Peer Groups

BGP can use multiple protocols like IPv4 Unicast, IPv4 Multicast, IPv6 Unicast, IPv6 Multicast, etc..… This means you need to...
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Routing & SwitchingSecurity

Packet Capture – Cisco IOS

Certainly, here’s the packet capture procedure on Cisco IOS with specific source IPs, destination IPs, and ports incorporated into the...
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Routing & SwitchingSecurity

Palo Alto – Incomplete , Not-Applicable, Unknown-tcp/udp , Insufficient Data , tcp-rst-from-client , tcp-rst-from-server

Incomplete = The three-way TCP handshake didn’t complete. (Routing issue or destination server not listening on the port) Not-applicable =...
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Routing & Switching

Control Plane vs Data Plane

Let’s say you and I are in charge of public transportation for a small city....
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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
  • Contact

Categories

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

Tags

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 LAG Microsoft IIS Microsoft SQL Microsoft Windows OSPF Packet Capture Palo Alto Palo Alto CLI PDF Planning Ports PowerShell python QOS Splunk SSL Storage Structured Cabling TCP TLS Troubleshooting Upgrade VMWare
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