Appendix D: Snmp Functions; Appendix E: How To Ping Your Isp's E-Mail & Web Addresses - Linksys BEFVP41 User Manual

Appendix D: 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 VPN Router with 4-Port 10/100 Switch to the work-
station console used to oversee the network. The Router then returns informa-
tion contained in a MIB (Management Information Base), which is a data struc-
ture 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 VPN Router with 4-Port 10/100 Switch is compatible with all HP
Openview compliant software.
Appendix E: 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 remember.
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 receiving mail and
accessing the Internet. This happens because the Router has not been config-
ured 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
VPN Router to your network.
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Instant Broadband™ Series EtherFast ® Cable/DSL VPN Router with 4-Port 10/100 Switch
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, select Run, and type command. This will bring up the DOS
Window.
3. At the DOS command prompt, type ping mail (assuming that the loca-
tion for which you're trying to find an IP address is configured as "mail").
Press the Enter key. 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 =
Figure E-1
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.
0ms, Average = 0ms
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