Chapter 3 Planning For A Vlan Configuration; Understanding Vlans On The Asa 5505 - Cisco ASA 5505 Getting Started Manual

Understanding VLANs on the ASA 5505

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Planning for a VLAN Configuration
Grouping ports into logical VLANs on the ASA 5505 enables you to segment
large private networks and provide additional protection to critical network
segments that may host resources such as servers, corporate computers, and IP
phones.
This chapter describes the options of deploying the ASA 5505 in a VLAN
configuration and how to determine how many VLANs you need. It also describes
allocating ports for each of the VLANs.
This chapter includes the following sections:
Understanding VLANs on the ASA 5505, page 3-1
•
Deployment Scenarios Using VLANs, page 3-4
•
What to Do Next, page 3-9
•
After you have made a decision about how to deploy the ASA 5505 in your
network, you must decide how many VLANs you need to support that deployment
and how many ports to allocate to each VLAN.
This section describes how VLANs work on the ASA 5505 to help you make those
decisions.
This section includes the following topics:
• About Physical Ports on the ASA 5505, page 3-2
About VLANs, page 3-2
•
C H A P T E R
Cisco ASA 5505 Getting Started Guide
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3-1