ZyXEL Communications ZyWALL 35 Series, User Manual

Page: 215 / 872

Chapter 10 WLAN
ZyWALL 5/35/70 Series User’s Guide
215
The following table describes the labels in this screen.
Table 53 NETWORK > WLAN
LABEL DESCRIPTION
WLAN TCP/IP
IP Address Type the IP address of your ZyWALL’s WLAN interface in dotted decimal notation.
Alternatively, click the right mouse button to copy and/or paste the IP address.
Note: Make sure the IP addresses of the LAN, WAN, WLAN and
DMZ are on separate subnets.
IP Subnet Mask The subnet mask specifies the network number portion of an IP address. Your
ZyWALL automatically calculates the subnet mask based on the IP address that
you assign. Unless you are implementing subnetting, use the subnet mask
computed by the ZyWALL.
RIP Direction RIP (Routing Information Protocol, RFC1058 and RFC 1389) allows a router to
exchange routing information with other routers. The
RIP Direction field controls
the sending and receiving of RIP packets. Select the RIP direction from Both / In
Only / Out Only / None . When set to Both or Out Only , the ZyWALL will broadcast
its routing table periodically. When set to Both or In Only , it will incorporate the
RIP information that it receives; when set to None , it will not send any RIP packets
and will ignore any RIP packets received. Both is the default.
RIP Version The RIP Version field controls the format and the broadcasting method of the RIP
packets that the ZyWALL sends (it recognizes both formats when receiving). RIP-1
is universally supported but RIP-2 carries more information. RIP-1 is probably
adequate for most networks, unless you have an unusual network topology. Both
RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being
that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting.
Multicasting can reduce the load on non-router machines since they generally do
not listen to the RIP multicast address and so will not receive the RIP packets.
However, if one router uses multicasting, then all routers on your network must use
multicasting, also. By default, RIP direction is set to
Both and the Version set to
RIP-1 .
Multicast Select IGMP V-1 or IGMP V-2 or None . IGMP (Internet Group Management
Protocol) is a network-layer protocol used to establish membership in a Multicast
group - it is not used to carry user data. IGMP version 2 (RFC 2236) is an
improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If
you would like to read more detailed information about inter-operability between
IGMP version 2 and version 1, please see
sections 4 and 5 of RFC 2236 .
DHCP Setup
DHCP DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows
individual clients (workstations) to obtain TCP/IP configuration at startup from a
server. Unless you are instructed by your ISP, leave this field set to
Server . When
configured as a server, the ZyWALL provides TCP/IP configuration for the clients.
When set as a server, fill in the
IP Pool Starting Address and Pool Size fields.
Select Relay to have the ZyWALL forward DHCP requests to another DHCP
server. When set to Relay , fill in the DHCP Server Address field.
Select None to stop the ZyWALL from acting as a DHCP server. When you select
None , you must have another DHCP server on your WLAN, or else the computers
must be manually configured.
IP Pool Starting
Address This field specifies the first of the contiguous addresses in the IP address pool.
Pool Size This field specifies the size, or count of the IP address pool.
DHCP Server
Address Type the IP address of the DHCP server to which you want the ZyWALL to relay
DHCP requests. Use dotted decimal notation. Alternatively, click the right mouse
button to copy and/or paste the IP address.