Cisco ASA 5505 - Manual (Page 435)

C H A P T E R
21-1
Cisco ASA 5500 Series Configuration Guide using the CLI
21
Routing Overview
This chapter describes underlying concepts of how routing behaves within the ASA, and the routing
protocols that are supported.
This chapter includes the following sections:
• Information About Routing, page 21-1
• How Routing Behaves Within the ASA, page 21-4
• Supported Internet Protocols for Routing, page 21-5
• Information About the Routing Table, page 21-6
• Information About IPv6 Support, page 21-9
• Disabling Proxy ARPs, page 21-11
Information About Routing
Routing is the act of moving information across an internetwork from a source to a destination. Along
the way, at least one intermediate node typically is encountered. Routing involves two basic activities:
determining optimal routing paths and transporting information groups (typically called packets)
through an internetwork. In the context of the routing process, the latter of these is referred to as packet
switching. Although packet switching is relatively straightforward, path determination can be very
complex.
This section includes the following topics:
• Switching, page 21-2
• Path Determination, page 21-2
• Supported Route Types, page 21-2