Linksys BEFSR81 manual Appendix, Snmp Functions, How to Ping Your ISP’s E-mail & Web Addresses

Instant Broadband Series

Appendix

SNMP Functions

SNMP (Simple Network Management Protocol) is a widely-used network monitoring and control protocol. Data is passed from a SNMP agent, such as the EtherFast Cable/DSL Router to the workstation console used to oversee the network. The Router then returns information contained in a MIB (Management Information Base), which is a data structure that defines what is obtainable from the device and what can be controlled (turned off, on, etc.).

SNMP functions, such as statistics, configuration, and device information, are not available without third-party Management Software. The EtherFast Cable/DSL Router is compatible with all HP Openview compliant software.

How to Ping Your ISP’s E-mail & Web Addresses

Virtually all Internet addresses are configured with words or characters (i.e., www.linksys.com, www.yahoo.com, etc.) In actuality, however, these Internet addresses are assigned to IP addresses, which are the true addresses on the Internet. For example, www.linksys.com is actually 206.135.116.3. Type it into your web browser and you will wind up at the Linksys home page every time.

IP and web addresses, however, can sometimes be long and hard to remem- ber. Because of this, certain ISPs will shorten their server addresses to single words or codes on their users’ web browser or e-mail configurations. If your ISP’s E-mail and Web server addresses are configured with single words (“www”, “e-mail”, “home”, “pop3”, etc.) rather than whole Internet Addresses or IP Addresses, the Router may have problems sending or receiv- ing mail and accessing the Internet. This happens because the Router has not been configured by your ISP to accept their abbreviated server addresses.

The solution is to determine the true web addresses behind your ISPs code words. You can determine the IP and web addresses of your ISP’s servers by “pinging” them.

If you don’t have your ISP’s web and e-mail IP Addresses, you must either get them from your ISP or follow these steps prior to connecting the Cable/DSL Router to your network.

EtherFast Cable/DSL Router

Step One: Pinging for an IP Address

The first step to determining your ISP’s web and e-mail server address is to ping its IP Address.

1.Power on the computer and the cable or DSL modem, and restore the network configuration set by your ISP if you have since changed it.

2.Click Start, then Run, and type "command". This will bring up the DOS Window.

3.At the DOS command prompt, type "ping mail" (assuming that the location for which you’re trying to find an IP address is configured as “mail”). Press Enter. Information such as the following data, taken from a ping of Microsoft Network’s e-mail server, will be displayed.

C:\>ping mail

Pinging mail [24.53.32.4] with 32 bytes of data:

Reply from 24.53.32.4: bytes=32 time<10ms TTL=128

Reply from 24.53.32.4: bytes=32 time<10ms TTL=128

Reply from 24.53.32.4: bytes=32 time<10ms TTL=128

Reply from 24.53.32.4: bytes=32 time<10ms TTL=128

Ping statistics for 24.53.32.4:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms

4.Write down the IP address returned by the ping command. (In the example above: 24.53.32.4.) This IP address is the actual IP address of the server “mail”, or any other word or value you have pinged.

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