Shiro ADSL 2/2+ Ethernet Modem manual mask, please refer to Assign ISP DNS, SNTP

User Manual

		subnet allows the router 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 router. 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 router. To access the web pages of the
		router 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 router 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.
	Assign ISP DNS,	Enable/disables the Assign ISP DNS, SNTP feature when the
	SNTP	DHCP server of your router has been enabled. To learn more,
		please refer to Assign ISP DNS, SNTP.
	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 router. For example, if the IP address of the router is
		192.168.1.1 (default), then the starting IP address must be
		192.168.1.2 (or higher).
	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.
	Lease Time	The Lease Time is the amount of time that a network user is
		allowed to maintain a network connection to the router using the
		current dynamic IP address. At the end of the Lease Time, the
		lease is either renewed or the DHCP server issues a new IP. 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 router supports the

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