CHAPTER
17-1
Cisco 7600 Series Router Cisco IOS Software Configuration Guide—12.1E
78-14064-04
17
Configuring IP Unicast Layer 3 Switching on
Supervisor Engine 2
This chapter describes how to configure IP unicast Layer 3 switching for Policy Feature Card 2 (PFC2),
Distributed Forwarding Cards (DFCs), and Multilayer Switch Feature Card 2 (MSFC2).
Note For complete syntax and usage information for the commands used in this chapter, refer to the
Cisco 7600 Series Router Cisco IOS Command Reference publication and the publications at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/index.htm
This chapter consists of these sections:
• Understanding How Layer 3 Switching Works, page 17-1
• Default Hardware Layer 3 Switching Configuration, page 17-4
• Layer 3 Switching Configuration Guidelines and Restrictions, page 17-4
• Configuring Hardware Layer 3 Switching, page 17-5
• Displaying Hardware Layer 3 Switching Statistics, page 17-6
Note • Supervisor Engine 2, PFC2, and MSFC2 support IPX with fast switching on the MSFC2. For more
information, refer to this URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/switch_c/xcprt1/xcdips
p.htm
• For information about IP multicast Layer 3 switching, see Chapter 18, “Configuring IP Multicast
Layer 3 Switching.”
Understanding How Layer 3 Switching Works
These sections describe Layer 3 switching with PFC2 and DFCs:
• Understanding Hardware Layer 3 Switching on PFC2 and DFCs, page 17-2
• Understanding Layer 3-Switched Packet Rewrite, page 17-2
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