H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – ARP
H3C S7500E Series Ethernet Switches Table of Contents
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Table of Contents
Chapter 1 ARP Configuration....................................................................................................... 1-1
1.1 ARP Overview.................................................................................................................... 1-1
1.1.1 ARP Function .......................................................................................................... 1-1
1.1.2 ARP Message Format............................................................................................. 1-2
1.1.3 ARP Address Resolution Process........................................................................... 1-2
1.1.4 ARP Mapping Table ................................................................................................ 1-3
1.2 Configuring ARP ................................................................................................................ 1-4
1.2.1 Configuring a Static ARP Entry ............................................................................... 1-4
1.2.2 Configuring the Maximum Number of ARP Entries for a VLAN Interface............... 1-5
1.2.3 Setting Aging Time for Dynamic ARP Entries......................................................... 1-5
1.2.4 Enabling the Support for ARP Requests from a Natural Network .......................... 1-6
1.2.5 ARP Configuration Example ................................................................................... 1-6
1.3 Configuring Gratuitous ARP .............................................................................................. 1-7
1.3.1 Introduction to Gratuitous ARP ............................................................................... 1-7
1.3.2 Configuring Gratuitous ARP.................................................................................... 1-7
1.4 Configuring ARP Source Suppression .............................................................................. 1-7
1.4.1 Introduction to ARP Source Suppression ............................................................... 1-7
1.4.2 Configuring ARP Source Suppression.................................................................... 1-8
1.5 Configuring ARP Defense Against IP Packet Attack......................................................... 1-8
1.5.1 Introduction to ARP Defense Against IP Packet Attack.......................................... 1-8
1.5.2 Enabling ARP Defense Against IP Packet Attack................................................... 1-9
1.6 Displaying and Maintaining ARP ....................................................................................... 1-9
Chapter 2 Proxy ARP Configuration............................................................................................ 2-1
2.1 Proxy ARP Overview ......................................................................................................... 2-1
2.2 Enabling Proxy ARP .......................................................................................................... 2-1
2.3 Displaying and Maintaining Proxy ARP ............................................................................. 2-2
2.4 Proxy ARP Configuration Examples.................................................................................. 2-2
2.4.1 Proxy ARP Configuration Example ......................................................................... 2-2
2.4.2 Local Proxy ARP Configuration Example in Case of Port Isolation ........................ 2-3
2.4.3 Local Proxy ARP Configuration Example in Isolate-user-vlan................................ 2-4