CDP
CDP (Cisco Discovery Protocol) is a tool that helps network professionals map and understand how devices are connected in a computer network. Think of it like a mapping system that shows which computers, phones, and network equipment are connected to each other. While CDP is Cisco's version, there are similar tools like LLDP (Link Layer Discovery Protocol) that do the same job for other brands. Network administrators use CDP to troubleshoot connection problems and document network layouts, much like how a building manager might use a floor plan to understand where everything is located.
Examples in Resumes
Implemented CDP monitoring to improve network visibility across multiple office locations
Used CDP and Cisco Discovery Protocol for network mapping and documentation
Troubleshot connectivity issues using CDP neighbor detection
Typical job title: "Network Engineers"
Also try searching for:
Where to Find Network Engineers
Online Communities
Professional Networks
Training Resources
Example Interview Questions
Senior Level Questions
Q: How would you use CDP in a large enterprise network to improve security and management?
Expected Answer: A senior engineer should discuss using CDP for network documentation, security assessments, and troubleshooting. They should explain how to safely disable CDP on public-facing interfaces while maintaining it internally for network management.
Q: How would you integrate CDP data with network monitoring tools?
Expected Answer: Should explain how to collect CDP information into network management systems, use it for automated documentation, and integrate with monitoring tools for better network visibility.
Mid Level Questions
Q: What are the key differences between CDP and LLDP?
Expected Answer: Should explain that CDP is Cisco's proprietary protocol while LLDP is industry-standard, and discuss when to use each one in a mixed-vendor network environment.
Q: How do you troubleshoot network issues using CDP?
Expected Answer: Should describe how to use CDP to verify connections, identify misconfigurations, and locate devices in the network.
Junior Level Questions
Q: What basic information does CDP provide about network devices?
Expected Answer: Should be able to list basic CDP information like device names, model numbers, IP addresses, and connected interfaces.
Q: How do you enable and disable CDP on a network device?
Expected Answer: Should know basic CDP commands for enabling/disabling the protocol globally and on specific interfaces.
Experience Level Indicators
Junior (0-2 years)
- Basic CDP configuration and monitoring
- Understanding network device connections
- Basic network troubleshooting
- Reading network diagrams
Mid (2-5 years)
- Network documentation using CDP
- Mixed vendor environment management
- Security considerations for discovery protocols
- Integration with monitoring tools
Senior (5+ years)
- Enterprise network design
- Advanced network security
- Automation and tool integration
- Team leadership and project management
Red Flags to Watch For
- No understanding of basic network protocols
- Inability to read network diagrams
- Lack of experience with Cisco equipment
- No knowledge of network security basics
Related Terms
Need more hiring wisdom? Check these out...
Cutting HR Costs Without Sacrificing Quality: A How-To for Savvy Executives
Human Capital Operational Excellence: Unlocking Your Organization's Potential
7 Ways to Maximize Your Candidate Database ROI
