Why does my ping fail even though IP addresses are correct?
22maya2n2 · posted · 89 views
I set up two PCs with IPs on the same subnet and connected them through a router. The IPs are definitely correct but ping times out. What should I check? I feel like I'm missing something obvious. Any troubleshooting checklist would be really helpful.
- 9 times out of 10 it's either a missing default gateway on the PC or the interface is admin-down. Always check show ip interface brief first — look for "administratively down" in the Status column. Also make sure both PCs have gateways pointing to the router. — NivSa,
- Also check if there's an ACL blocking ICMP. I spent an hour once troubleshooting a failed ping before realizing I had an extended ACL on the outbound interface that was denying all traffic. The implicit deny at the end catches everything you didn't explicitly permit. — itayitayy,
- It was the default gateway! Both PCs had IPs but I forgot to set the gateway pointing to the router interface. show ip interface brief showed everything as up/up so I assumed it was fine. Lesson learned — always check the gateway on endpoints. — 22maya2n2,
0 Answers
Your answer
Answering is a Pro feature. Free accounts can read everything and still like, comment, and connect. Upgrade to Pro →