Cisco Systems OL-6426-02 manual Per-Port Storm Control, Fallback Bridging, Igmp Snooping

Chapter 5 Configuring a LAN with DHCP and VLANs

Switch Port Configurations

Note Per-Port enabling and disabling of unknown multicast and unicast packets is not supported on the Cisco 1800 (Fixed) configuration router.

Per-Port Storm Control

You can use these per-port storm control techniques to block the forwarding of unnecessary, flooded traffic.

Fallback Bridging

With Fallback Bridging, the switch bridges together two or more VLANs or routed ports, essentially connecting multiple VLANs within one bridge domain.

To configure Fallback Bridging for a set of SVIs, the SVIs must be assigned to bridge groups. All bridges in the same group belong to the same bridge domain. Each SVI can be assigned to only one bridge group.

Separate Voice and Data Subnets

For ease of network administration and increased scalability, network managers can configure the switch ports to support Cisco IP phones such that the voice and data traffic reside on separate subnets.

IGMP Snooping

By default, IGMP Snooping is globally enabled on the switch ports. When globally enabled or disabled, it is also enabled or disabled on all VLAN interfaces. It can be enabled and disabled on a per-VLAN basis.

Note All of the procedures for configuring the switch ports, including configuration examples and information on the features and interfaces are in the Cisco HWIC-4ESW and HWIC-9ESW EtherSwitch Interface Cards document on Cisco.com. See this document to configure the switch ports.

	Book Title
5-10	OL-xxxxx-xx