Time Configuration - Lancom ES-2126+ Manual

LANCOM ES-2126+ and LANCOM ES-2126P+
Chapter 4: Operation of Web- based Management
4.2.3

Time Configuration

The switch provides manual and automatic ways to set the system time via
NTP. Manual setting is simple and you just input "Year", "Month", "Day",
"Hour", "Minute" and "Second" within the valid value range indicated in each
item. If you input an invalid value, for example, 61 in minute, the switch will
clamp the figure to 59.
NTP is a well-known protocol used to synchronize the clock of the switch sys-
tem time over a network. NTP, an internet draft standard formalized in RFC
36
networks, hence, subnet mask is introduced to solve this problem.
Subnet mask uses some bits from host address and makes an IP
address looked Network address, Subnet mask number and host
address. This reduces the total IP number of a network able to sup-
port, by the amount of 2 power of Subnet mask is used to set the sub-
net mask value, which should be the same value as that of the other
devices resided in the same network it attaches. For more information,
please also see the Section 2-1-5 "IP Address Assignment" in this
manual. Default: 255.255.255.0
Default gateway: Set an IP address for a gateway to handle those
packets that do not meet the routing rules predefined in the device. If
a packet does not meet the criteria for other pre-defined path, it must
be forwarded to a default router on a default path. This means any
packet with undefined IP address in the routing table will be sent to
this device unconditionally.
Default: 172.23.56.250
DNS: It is Domain Name Server used to serve the translation between
IP address and name address.
The switch supports DNS client function to re-route the mnemonic
name address to DNS server to get its associated IP address for acces-
sing Internet. User can specify a DNS IP address for the switch. With
this, the switch can translate a mnemonic name address into an IP
address.
There are two ways to specify the IP address of DNS. One is fixed
mode, which manually specifies its IP address, the other is dynamic
mode, which is assigned by DHCP server while DHCP is enabled. DNS
can help you easily remember the mnemonic address name with the
meaningful words in it. Default is no assignment of DNS address.
Default: 0.0.0.0