Kerry CorderoPractical Network Engineering Notes
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Routing & Switching

CloudData CenterLoad BalancingRouting & SwitchingSecurityServersVOIPWireless

SD-WAN Requirement Questions for Vendor Evaluation

Below are some good questions you should be asking when looking into SD-WAN....
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Routing & Switching

Palo Alto Out of Sync Packets (Legacy Devices)

If you’re working with a vWire configuration, there’s a crucial consideration you need to take into account, especially if you...
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Data CenterLaptops & DesktopsRouting & SwitchingSecurityWireless

Wireshark Filters

URL http.host == “api.cordero.me” DNS dns.qry.name == “www.cordero.me” dns.qry.name matches “.cordero.me” dns.qry.name contains “cordero.me” TCP Flags tcp.flags.reset == 1 tcp.flags.push...
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Routing & Switching

Cisco CLI Cable Testing Command

Cisco has a command that can run TDR tests on an interface. A TDR (time-domain reflectometer) is an electronic instrument...
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Routing & Switching

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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Routing & Switching

IP SLA “AND OR” Boolean Options

If you’re trying to monitor multiple IP’s and you want the IP SLA to trigger when ALL IP’s are down,...
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Routing & Switching

IP SLA

Routing & Switching

Solarwinds Orion SNMP & Netflow (Cisco)

Below are some configs that work with Solarwinds Orion....
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Data CenterRouting & Switching

Cisco LACP Individual State with 3rd Party Devices

I work a lot with other products like HP Dell-Brocade, and EMC. Sometimes I need to port-channel to them, but...
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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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  • 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
    • RouteAgg
    • IP Calculator
    • 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) AWS 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 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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