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Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint
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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 Firewall Router with 4-Port 10/100 Switch/VPN
Endpoint 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 Firewall Router with 4-Port Switch/VPN Endpoint is compatible
with all HP Openview compliant software.
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Appendix E: How to Ping Your ISP’s
E-mail & Web Addresses
Virtually all Internet addresses are configured with words or characters (e.g.,
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 216.23.162.142. Type it into
your web browser and you will wind up at the Linksys home page every time.
There are servers that translate the URL to an IP address; this is called Domain
Name System (DNS).
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 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.
Important: 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 your Router to your network.