Asus GigaX 7.1.2 nslookup

120

7.1.2 nslookup

You can use the nslookup command to determine the IP address associated

with an Internet site name. You specify the common name, and the nslookup

command looks up the name on your DNS server (usually located with your

ISP). If that name is not an entry in your ISP’s DNS table, the request is then

referred to another higher-level server, and so on, until the entry is found. The

server then returns the associated IP address.

On Windows-based computers, you can execute the nslookup command from

the Start menu. Click the Start button, then click Run. In the Open text box,

type the following:

nslookup

Click . A Command Prompt window displays with a bracket prompt

(>). At the prompt, type the name of the Internet address you are interested in,

such as www.absnews.com.

The window displays the associate IP address, if known. See Figure 53.

Figure 53. Using the nslookup utility

There may be several addresses associated with an Internet name. This is

common for web sites that receive heavy traffic; they use multiple, redundant

servers to carry the same information.

To exit from the nslookup utility, type exit and press <Enter> at the command

prompt.

Contents

Main 2 Exxxx First Edition V1 March 2005 GigaX Series L3 Managed Switch User Guide Federal Communications Commission Statement Canadian Department of Communications Statement ASUS contact information Table of Contents Page Page Page List of Figures Page List of Tables 1 Introduction 1.1 L3 managed features Page 1.2 Conventions used in this document 1.2.1 Notations 1.2.2 Typography 1.2.3 Symbols 2 Getting to know the GigaX 2.1 Package contents Page 17 Table 1. Front panel labels and LEDs 2.3 Rear Panel 2.4 Technical specifications 3 Quick start guide 3.1 Part 1 Installing the hardware 3.1.1 Installing the switch on a flat surface 3.1.2 Mounting the switch on a rack 3.2 Part 2 Setting up the switch 3.2.1 Connect the console port 3.2.2 Connect to the computers or a LAN 3.2.3 Attach the RPS module 3.2.4 Attach the power adapter Page 3.3 Part 3 Basic switch setting for management 3.3.1 Setting up through the console port Page Page 3.3.2 Setting up through the Web interface Page 4 Management with the Web Interface 4.1 Log into Web user interface 4.2 Functional layout Page Page 4.2.1 Menu navigation tips 4.2.2 Commonly used buttons and icons 4.3 System Pages 4.3.1 Management 4.3.2 IP Setup 4.3.3 Administration 4.3.4 Reboot 4.3.5 Firmware Upgrade 4.4 Physical Interface Page 4.5 Route 4.5.1 Interfaces Page 4.5.2 Static Route 4.5.3 RIP 4.6 Bridge 4.6.1 Spanning Tree/Rapid Spanning Tree 4.6.2 Link Aggregation Page 4.6.3 Mirroring Page 4.6.4 Static Multicast 4.6.5 IGMP Snooping 4.6.6 Traffic Control 4.6.7 Dynamic Addresses Page 4.6.8 Static Addresses 4.6.9 Tagged VLAN Page 4.6.10 Default Port VLAN and CoS 4.6.11 CoS Queue Mapping 4.6.12 DHCP Snooping Page 4.7 SNMP 4.7.1 Community Table Page 4.7.3 Trap Setting 4.7.4 VACM Group 4.7.5 VACM View Page 4.7.6 USM User Page 4.8 Filters 4.8.1 Filter Set Page Page 4.8.2 Filter Attach Page 4.9 Security 4.9.1 Port Access Control Page 4.9.2 Dial-In User 4.9.3 RADIUS 4.10 Statistics Chart 4.10.1 Traffic Comparison Page Page 4.11 Save Configuration 5 Console Interface Page 5.1.1 Boot ROM Command Mode 81 5.1.2 Boot ROM Commands Type ? in the boot mode to display the valid commands list. Table 7. Boot ROM commands 5.2 Login and Logout 5.3 CLI Commands 5.3.1 System Commands Page Page 5.3.2 Physical Interface Commands 5.3.3 Route Commands Page 5.3.4 Bridge Commands Page Page Page Page Page Page Page 5.3.5 SNMP Page Page Page Page Page Page 5.3.5 Filters Commands Page Page Page 5.3.6 Security Commands Page Page Page Page Page 6 IP Addresses, Network Masks, and Subnets 6.1 IP Addresses 6.1.1 Structure of an IP address Page 6.1.2 Network classes 6.2 Subnet masks Page 7 Troubleshooting 7.1 Diagnosing problems using IP utilities 7.1.1 ping Page 7.1.2 nslookup 7.2 Replacing defective fans Page 123 7.3 Simple fixes Page 8 Glossary Page Page Page Page Page Page Page Page 9 Index