Cisco 7604 User Manual

CHAPTER
37-1
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
37
Configuring DHCP Snooping
This chapter describes how to configure Dynamic Host Configuration Protocol (DHCP) snooping on
Cisco 7600 series routers.
Note • The DHCP snooping feature requires PFC3 and Release 12.2(18)SXE and later releases. The PFC2
does not support DHCP snooping.
• For complete syntax and usage information for the commands used in this chapter, refer to the Cisco
IOS Master Command List, Release 12.2SX at this URL:
http://www.cisco.com/en/US/docs/ios/mcl/122sxmcl/12_2sx_mcl_book.html
This chapter consists of the following major sections:
• Understanding DHCP Snooping, page 37-1
• Default Configuration for DHCP Snooping, page 37-6
• DHCP Snooping Configuration Restrictions and Guidelines, page 37-7
• Configuring DHCP Snooping, page 37-9
Tip For additional information (including configuration examples and troubleshooting information), see the
documents listed on this page:
http://www.cisco.com/en/US/products/hw/routers/ps368/tsd_products_support_series_home.html
Understanding DHCP Snooping
These sections describe the DHCP snooping feature:
• Overview of DHCP Snooping, page 37-2
• Trusted and Untrusted Sources, page 37-2
• DHCP Snooping Binding Database, page 37-2
• Packet Validation, page 37-3
• DHCP Snooping Option-82 Data Insertion, page 37-3
• Overview of the DHCP Snooping Database Agent, page 37-5

Cisco 7604 Specifications

General

Brand	Cisco
Model	7604
Category	Network Router
Language	English