Cisco Systems OL-6426-02 Benutzerhandbuch

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5-10
Book Title
OL-xxxxx-xx
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.