NETWORK ENGINEER TOOLKIT MVP v0.1

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Engineer focusedBuilt around real-world network workflows.
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Always growingNew tools and technical guides added regularly
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Network Guides

In-depth, practical guides for network engineers.

View all guides →
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IPv4 Subnetting Explained

A practical guide to subnetting, hosts, masks and VLSM.

Read guide →
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CIDR Notation Explained

From /8 to /32 — how CIDR works and when to use it.

Read guide →
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MTU Explained

VLAN, GRE, VXLAN and IPsec overhead in detail.

Read guide →
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IP & NETWORK

Subnet Calculator

Calculate IPv4 networks, hosts and split subnets.

CONFIG

Config Generator

Generate a clean Cisco switch access-port configuration from a few inputs.

→ GigabitEthernet1/0/24

Generated config


    

  











TROUBLESHOOTING


MTU Calculator


Calculate effective MTU and payload after common encapsulation overhead.



  

    

    

    

    

    

  

  

  

    Values are estimates. Actual overhead can vary by tunnel mode, encryption, options and implementation.
  









OPTICS


Optical Tools


Quick optical power conversion and fiber link budget calculations.




  
DBM CONVERTER

  
Power conversion

  

    

    

  

  






  
OPTICAL BUDGET

  
Estimate received power

  

    

    

    

    

    

    

    

    

  

  










LOOKUP
MAC Vendor Lookup
Find the registered vendor for a MAC address or OUI. Supports colon, dash, dot and plain formats.






Examples: 00:1A:2B:3C:4D:5E, 001A.2B3C.4D5E, 00-1A-2B or 001A2B.




Vendor registration data is retrieved through our lookup service. A MAC address you submit is sent to that service to perform the lookup.









IP & NETWORK
IP / CIDR Explorer
Browse a parent network and inspect every child subnet.