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User Guide for the Catalyst Express 500 Switches
OL-8122-01
Chapter 3 Customization
Isolate Traffic and Users through VLANs
After creating VLANs, you can then assign the appropriate ports to those VLANs.
Before assigning ports to VLANs, make sure that each port is applied with the
appropriate port role. For more information, see the “Optimize Ports through
Smartports Port Roles” section on page 3-2 and the “Change VLAN
Memberships” section on page 3-7.
Use the VLANs window (Figure 3-7) to create, modify, and delete VLANs. To
display this window, choose Configure > VLANs from the device manager menu.
See the device manager online help for additional guidelines and procedures.
Figure 3-7 VLANs Window
Advanced VLAN Configuration
The advanced VLAN options are the Spanning Tree Protocol (STP) and Internet
Group Management Protocol (IGMP) snooping features on the switch ports.
These options are enabled by default.
We recommend that you leave these options enabled for the benefits that they
provide:
• STP prevents network loops by enabling only one active path for traffic to
use. STP also provides a redundant path if the active path becomes
unavailable.
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