6381-A4 Router Users Guide
54
Netmask
The default subnet mask of your RG is 255.255.255.0. This subnet
allows the 6381 RG to support 254 users. If you want to support a larger
number of users you can change the subnet mask.
Default Gateway
The default gateway is the routing device used to forward all traffic that is
not addressed to a station within the local subnet. Your ISP provides you
with the IP address of the default gateway.
Host Name
The host name is used in conjunction with the domain name to uniquely
identify the RG. It can be any alphanumeric word that does not contain
spaces.
Domain
The domain name is used in conjunction with the host name to uniquely
identify the RG. To access the web pages of the RG you can type
192.168.1.1 (the IP address) or mygateway1.ar7 (Host Name.Domain).
Enable DHCP Server
Enables/disables DHCP. By default, your RG has the DHCP server (LAN
side) enabled. If you already have a DHCP server running on your
network, you must disable one of the two DHCP servers. See the DHCP
server configuration section for more information.
Assign ISP DNS
Enable/disables the Assign ISP DNS feature when the DHCP server of
your 6381 RG has been enabled.
Start IP
The Start IP Address is where the DHCP server starts issuing IP
addresses. This value must be greater than the IP address value of the
RG. For example, if the IP address of the RG is
192.168.1.1
(default),
then the starting IP address must be
192.168.1.2
(or higher).
Note: If you change the start or end values, make sure the values are still
within the same subnet as the RG. In other words, if the IP address of
the RG is
192.168.1.1
(default) and you change the DHCP start/end IP
addresses to be
192.168.1.2
/
192.168.1.100
, you cannot communicate
with the RG if your host has DHCP enabled.
End IP
The End IP Address is where the DHCP server stops issuing IP
addresses. The ending address cannot exceed a subnet limit of 254,
hence the max value for the default gateway is 192.168.1.254. If the
DHCP server runs out of DHCP addresses, users do not get access to
network resources. If this happens, you can increase the Ending IP
address (to the limit of 254) or reduce the lease time.
Note: If you change the start or end values, make sure the values are still
within the same subnet as the IP address of the RG. In other words, if
the IP address of the RG is
192.168.1.1 (default) and you change the
DHCP start/end IP addresses to be 192.168.1.2/192.168.1.100, you
cannot communicate with the RG if your host has DHCP enabled.
Lease Time
The Lease Time is the amount of time that a network user is allowed to
maintain a network connection to the RG using the current dynamic IP
address. At the end of the Lease Time, the lease is either renewed or a
new IP is issued by the DHCP server. The amount of time is in units of
seconds. The default value is 3600 seconds (1 hour). The maximum
value is 999999 seconds (about 278 hours).
Enable DHCP Relay
In addition to the DHCP server feature, the 6381 RG supports DHCP
relay which means the 6381 RG is then a DHCP relay agent. When the
RG is configured as DHCP server, it assigns the IP addresses to the
LAN clients. When the gateway is configured as DHCP relay agent, it is
responsible for forwarding the requests and responses negotiated
between the DHCP clients and the server.
Relay IP
The IP address of the DHCP relay server.
Server and Relay Off
When the DHCP server and relay functions are turned off, the network
administrator must carefully configure the IP address, Subnet Mask, and
DNS settings of every host on your network. Do not assign the same IP
address to more than one host. Also, your RG must reside on the same
subnet as all the other hosts.
19216811.live