Day: July 20, 2025

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...

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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...

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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...

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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...

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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...

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