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OSPF Protocol: in-depth Overview & Video Tutorials

Introduction About OSPF Protocol OSPF (Open Shortest Path First) is...

[Day#1c PyATS Series] Why pyATS? Why not just stick to Netmiko / NAPALM / Paramiko which are easier?

Many network engineers ask: “Why should I learn pyATS when...

[Day#1b PyATS Series] Step-by-Step: Install pyATS in PyCharm (Ubuntu)

If you’re exploring Python for Network Engineers, mastering tools like...

Ticket#10 - NAT Overload Failure: Why Users Couldn't Access the Internet – A Real Fix [CCNP ENTERPRISE]

Ticket#10 – NAT Overload Failure: Why Users Couldn’t Access the Internet – A Real Fix [CCNP ENTERPRISE]

Problem Summary In a mid-sized enterprise, users across VLANs suddenly...

Ticket#9 - WAN Flap Detection: DMVPN Phase 2 Tunnel Up/Down Issue Fixed [CCNP Enterprise]

Ticket#9 – WAN Flap Detection: DMVPN Phase 2 Tunnel Up/Down Issue Fixed [CCNP Enterprise]

Problem Summary The enterprise monitoring tool detected flapping tunnels between...

Ticket#8 - VOIP Choppy Audio – DSCP Marking Mismatch Fixed [QoS Real World] [CCNP ENTERPRISE]

Ticket#8 – VOIP Choppy Audio – DSCP Marking Mismatch Fixed [QoS Real World] [CCNP ENTERPRISE]

Problem Summary Users across multiple floors reported choppy VoIP audio...

Ticket#7 - Multicast Video Freezes in Conference Room – Troubleshoot IGMP and PIM [CCNP ENTERPRISE]

Ticket#7 – Multicast Video Freezes in Conference Room – Troubleshoot IGMP and PIM [CCNP ENTERPRISE]

Problem Summary In a conference room, video multicast stream intermittently...

Ticket#6 - DHCP Not Working on Access Layer – Troubleshoot Snooping and Relay [CCNP ENTERPRISE]

Ticket#6 – DHCP Not Working on Access Layer – Troubleshoot Snooping and Relay [CCNP ENTERPRISE]

Problem Summary In a mid-sized enterprise campus network, multiple users...