Operation Manual – NAT, Netstream, Policy RoutingH3C S7500 Series Ethernet Switches Table of ContentsiTable of ContentsChapter 1 NAT Configuration....................................................................................................... 1-11.1 NAT Overview.................................................................................................................... 1-11.2 NAT Features..................................................................................................................... 1-31.2.1 NAT and NAT Control ............................................................................................. 1-31.2.2 NAPT....................................................................................................................... 1-41.2.3 Easy IP .................................................................................................................... 1-51.2.4 Internal Server......................................................................................................... 1-51.2.5 Special Protocols Supported by NAT...................................................................... 1-51.3 Configuring NAT ................................................................................................................ 1-51.3.1 NAT Configuration Task List ................................................................................... 1-51.3.2 Configuring a NAT Address Pool ............................................................................ 1-61.3.3 Configuring NAT...................................................................................................... 1-61.3.4 Configuring Internal Server ..................................................................................... 1-81.3.5 Configuring Non-Standard Internal FTP Server.................................................... 1-101.3.6 Configuring NAT Blacklist ..................................................................................... 1-111.3.7 Configuring NAT Connection Aging Time ............................................................. 1-121.3.8 Configuring NAT Security Logging........................................................................ 1-121.4 Displaying NAT Configuration.......................................................................................... 1-151.5 NAT Configuration Example ............................................................................................ 1-15Chapter 2 Netstream Configuration............................................................................................. 2-12.1 Netstream Overview .......................................................................................................... 2-12.1.1 Introduction to Netstream........................................................................................ 2-12.1.2 Implementation of Netstream .................................................................................. 2-22.2 Configuring Netstream....................................................................................................... 2-22.2.1 Netstream Configuration Task List.......................................................................... 2-22.2.2 Enabling Netstream................................................................................................. 2-32.2.3 Entering Netstream Aggregation View.................................................................... 2-32.2.4 Enabling the Corresponding Aggregation Mode ..................................................... 2-42.2.5 Configuring the Address Information for Netstream Export Packets ...................... 2-52.2.6 Configuring the Version and AS Option for Netstream Export Packets.................. 2-52.2.7 Configuring the DSCP Value for Netstream Export Packets .................................. 2-62.2.8 Configuring Netstream Entry Aging Time ............................................................... 2-62.2.9 Configuring the Ways to Update the Template for Version 9 Netstream Packets........ 2-72.3 Displaying Netstream Configuration .................................................................................. 2-82.4 Netstream Configuration Example..................................................................................... 2-8Chapter 3 Policy Routing Configuration ..................................................................................... 3-13.1 Overview ............................................................................................................................ 3-1