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Praphul Mishra- The Founder of PM Networking
Welcome to my networking world! I am Praphul Mishra, and…
OSPF Neighbour Stuck in EXSTART? A Troubleshooting Checklist
OSPF neighbour stuck in EXSTART? Check MTU and DBD exchange…
VLAN Trunk Troubleshooting: Fix Native VLAN and Allowed VLAN Issues
Troubleshoot Cisco VLAN trunks with a two-switch lab. Fix native…
CCNA Subnetting Practice: 8 IPv4 Problems with Worked Answers
A /26 IPv4 subnet contains 64 addresses. On a conventional…
CCNP ENARSI Lab Checklist: Practise Routing and Troubleshooting
A useful CCNP ENARSI lab is more than a working…
OSPF Neighbour Stuck in EXSTART? A Troubleshooting Checklist
OSPF neighbour stuck in EXSTART? Check MTU and DBD exchange with a two-router lab, sample outputs, fixes, FULL-state verification and route tests.
VLAN Trunk Troubleshooting: Fix Native VLAN and Allowed VLAN Issues
Troubleshoot Cisco VLAN trunks with a two-switch lab. Fix native VLAN mismatches and missing allowed VLANs using commands, sample output and verification.
CCNA Subnetting Practice: 8 IPv4 Problems with Worked Answers
A /26 IPv4 subnet contains 64 addresses. On a conventional LAN, 62 are usable host addresses. For example, 192.168.10.77/26 belongs to the subnet that.
CCNP ENARSI Lab Checklist: Practise Routing and Troubleshooting
A useful CCNP ENARSI lab is more than a working configuration. You should be able to explain why a route exists, predict what happens.
Top 50 CCNA Interview Questions and Answers (2026 Update)
50 CCNA interview questions with short answers on switching, VLANs, OSPF, NAT, ACLs and security. Great for freshers and job seekers.