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WAN Configuration 4-3
4. If the DHCP setting is not checked, fill in the information in this area. To find out the information to enter into these
fields, contact the network administrator or the ISP that provided the cable modem or DSL router. All the fields below
take standard IP addresses of the form xxx.xxx.xxx.xxx.
•The IP Address refers to the IP address that the outside world will use to address the WS 2000 Wireless Switch.
• Click the More IP Addresses button to specify additional static IP addresses for the switch. Additional IP
addresses are required when users within the LAN need dedicated IP addresses, or when servers in the LAN need
to be accessed (addressed) by the outside world. The pop-up window allows the administrator to enter up to eight
WAN IP addresses for the switch.
• The Subnet Mask is the mask used for the WAN.
• The Default Gateway is the address of the device that provides the connection to the WAN (often a cable modem
or DSL router).
• The two DNS Server fields specify DNS addresses of servers that can translate domain names, such as
www.symbol.com, into IP addresses that the network uses when passing information. The Secondary DNS Server
acts as a backup to the Primary DNS Server, when the primary server is not responding.
Setting Up Point-to-Point over Ethernet (PPPoE) Communication
PPPoE provides the ability to connect a network of hosts through a simple device to a remote access concentrator. Many DSL
providers require that their clients communicate using this protocol. The facility allows the ISP to control access, billing, and
type of service provided to clients on a per-user or per-site basis. Check with the network administrator or ISP to determine
whether to enable this feature, and, if so, find out the username and password required for authentication.
1. Check Enable in the PPP over Ethernet area to enable the PPPoE protocol for high-speed connections.
2. Enter the Username and Password required for authentication. The username and password is for the switch’s router
to use when connecting to the ISP. When the Internet session starts, the ISP authenticates the username.
3. Set the Idle Time to an appropriate number. This number is the amount of time the PPPoE connection will be idle before
it disconnects. The 10000 second (default idle time is appropriate for most situations).
4. Check Keep Alive to instruct the switch to continue occasional communications over the WAN even when client
communications to the WAN are idle. Some ISPs terminate inactive connections, while others do not. In either case,
enabling Keep-Alive mode keeps the switch’s WAN connection alive, even when there is no traffic. If the ISP drops the
connection after so much idle time, the switch automatically reestablishes the connection to the ISP.
5. Select the appropriate WAN authentication method from the drop-down menu. Collect this information from the
network administrator. Select between None, PAP, CHAP, or PAP or CHAP.
6. Click the Apply button to save changes.
CHAP A type of authentication in which the person logging in uses secret information and some special math-
ematical operations to come up with a number value. The server he or she is logging into knows the
same secret value and performs the same mathematical operations. If the results match, the person is
authorized to access the server. One of the numbers in the mathematical operation is changed after
every login, to protect against an intruder secretly copying a valid authentication session and replaying
it later to log in.
PAP An identity verification method used to send a user name and password over a network to a computer
that compares the user name and password to a table listing authorized users. This method of authen-
tication is less secure, because the user name and password travel as clear text that a hacker could
read.