How to - Ping, traceroute, ifconfig and Renew DHCP on a Mac

macOS: Mastering Pro Network Tools (Ping, Traceroute, and DHCP)

In the high-stakes world of technical support and remote management, your Mac is a powerhouse of networking diagnostics. While macOS has moved toward a sleek, user-friendly interface, the "under the hood" tools—Ping, Traceroute, ifconfig, and DHCP Renewal—remain the essential toolkit for identifying bottlenecks and fixing connection drops in seconds.

Whether you're troubleshooting a laggy video call or a server that won't respond, here is your 2026 guide to network mastery on a Mac.

1. The Diagnostic Duo: Ping & Traceroute

These are your "digital sonar." They tell you if a destination is alive and exactly where the signal is getting stuck.

• How to Ping: Open Terminal (Cmd + Space, type "Terminal") and type ping google.com. You want to see consistent response times (ms). Press Ctrl + C to stop.

• How to Traceroute: Type traceroute google.com in Terminal. This shows every "hop" (router) your data hits. If it hangs at Hop 1, the problem is your local router; if it hangs at Hop 10, the issue is on the ISP or server side.

2. ifconfig: The Network Blueprint

While Windows users use ipconfig, Mac users (and Linux pros) use ifconfig.

• The Command: Type ifconfig to see every network interface on your Mac.

• What to look for: Look for en0 (usually your Wi-Fi) or en1 (Ethernet). Under these headers, your inet address is your current local IP, and the ether address is your hardware MAC address.

3. Renewing Your DHCP Lease (Refreshing Your IP)

When your Mac has a "self-assigned IP" or "Limited Connectivity," renewing the DHCP lease is the fastest fix.

• The Modern Way (System Settings): Go to Apple Menu > System Settings > Network. Click your active connection (Wi-Fi/Ethernet) > Details... > TCP/IP and click Renew DHCP Lease.

• The Pro Way (Terminal): Type sudo ipconfig set en0 DHCP. This forces the system to drop its current lease and request a fresh one from the router immediately.