Storm Control for Multicast & Unicast

Bundle lab · $29.99

Harden the Layer-2 access edge by limiting multicast and unknown-unicast floods on host-facing ports with a non-disruptive trap action. You will apply storm-control multicast and unicast thresholds to SW1 access interfaces while leaving the uplink trusted and unrestricted for gateway/DHCP. Verify the configuration with show commands and end-to-end host reachability.

Learning objectives

• Differentiate broadcast, multicast, and unknown-unicast flooding at Layer-2
• Apply storm-control multicast and unicast thresholds on access ports only
• Choose a non-disruptive storm-control action (trap) instead of shutdown
• Verify storm-control status with CLI and confirm host reachability remains unaffected

Troubleshooting focus

• Storm control configured on the uplink instead of access ports, throttling gateway-bound traffic
• Forgetting storm-control action trap, leaving the default behavior or using shutdown unexpectedly
• Mis-typing levels or using integer levels without decimals on platforms that expect XX.XX format
• Assuming unicast storm control limits all unicast (it limits unknown-unicast flooding only)
• Interpreting zero counters as misconfiguration instead of normal low-traffic conditions