Product Manual

DHCP
Manual
Subnet Mask
Default Gateway
VLAN Name
Admin State
DES-3526 / DES-3526DC Fast Ethernet Layer 2 Switch
The Switch will send out a DHCP broadcast request when it is powered up. The DHCP
protocol allows IP addresses, network masks, and default gateways to be assigned by
a DHCP server. If this option is set, the Switch will first look for a DHCP server to
provide it with this information before using the default or previously entered settings.
Allows the entry of an IP address, Subnet Mask, and a Default Gateway for the Switch.
These fields should be of the form xxx.xxx.xxx.xxx, where each xxx is a number
(represented in decimal form) between 0 and 255. This address should be a unique
address on the network assigned for use by the network administrator.
A Bitmask that determines the extent of the subnet that the Switch is on. Should be of
the form xxx.xxx.xxx.xxx, where each xxx is a number (represented in decimal)
between 0 and 255. The value should be 255.0.0.0 for a Class A network, 255.255.0.0
for a Class B network, and 255.255.255.0 for a Class C network, but custom subnet
masks are allowed.
IP address that determines where packets with a destination address outside the
current subnet should be sent. This is usually the address of a router or a host acting
as an IP gateway. If your network is not part of an intranet, or you do not want the
Switch to be accessible outside your local network, you can leave this field unchanged.
This allows the entry of a VLAN Name from which a management station will be
allowed to manage the Switch using TCP/IP (in-band via web manager or Telnet).
Management stations that are on VLANs other than the one entered here will not be
able to manage the Switch in-band unless their IP addresses are entered in the
Security IP Management menu. If VLANs have not yet been configured for the Switch,
the default VLAN contains all of the Switch's ports. There are no entries in the Security
IP Management table, by default, so any management station that can connect to the
Switch can access the Switch until a management VLAN is specified or Management
Station IP Addresses are assigned.
This allows the user the enable or disable the Admin State for the IP interface, by the
using the pull-down menu. Disabling this feature will render all remote management
inoperable, and thus the only way to configure the Switch will be to use the Console
port for the Command Line Interface.
Auto Config State When autoconfig is enabled, the Switch is instructed to get a configuration file via
TFTP, and it becomes a DHCP client automatically. The configuration file will be
loaded upon booting up. In order to use Auto Config, the DHCP server must be set up
to deliver the TFTP server IP address and configuration file name information in the
DHCP reply packet. The TFTP server must be running and have the requested
configuration file stored in its base directory when the request is received from the
Switch. Consult the DHCP server and/or TFTP server software instructions for
information on loading a configuration file for use by a client. (Also see the section
titled Upload Configuration for instructions on uploading a configuration to a TFTP
server.
If the Switch is unable to complete the autoconfiguration process the previously saved
configuration file present in Switch memory will be loaded.
Click Apply to let your changes take effect.
Setting the Switch's IP Address using the Console Interface
Each Switch must be assigned its own IP Address, which is used for communication with an SNMP
network manager or other TCP/IP application (for example BOOTP, TFTP). The Switch's default IP
address is 10.90.90.90. You can change the default Switch IP address to meet the specification of your
networking address scheme.
The IP address for the Switch must be set before it can be managed with the Web-based manager. The
Switch IP address can be automatically set using BOOTP or DHCP protocols, in which case the actual
28