Tahoe 1701, User Manual

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3.3. Commands
3.3.1. ?, help
Entering “?” or “help” shows a list of available commands.
3.3.2. arp
The “arp” command is used to configure the ARP table. The “arp”
alone shows the list of connections between IP and hardware (MAC)
addresses:
Tahoe> arp
IP address
Hardware address
10.0.0.2 00:50:04:0D:70:31 dynamic
ARP table entries may be deleted using “arp del”:
Tahoe> arp del 10.0.0.2
(the IP address to be deleted should be typed instead of
“10.0.0.2” ).
A static ARP entry may be added using “arp add”:
Tahoe> arp add 10.0.0.3 00:50:13:E9:5C:01
The dynamic hardware address resolution may be disabled using
the “ifconfig” command. If it is disabled, only those stations may connect
to the router, whose IP and MAC addresses are entered into the ARP table
using the “arp add” command. This way an unauthorized network access
may be prohibited.
3.3.3. bridge
The “bridge” command enables or disables the bridge mode, in
which two interconnected LANs create one whole in the hardware layer.
The stations in both LANs behave like if they were connected to one
®
Ethernet switch, e.g. PCs working under Microsoft Windows™
operating system will see each other in the network neighborhood.
Three settings are available:
¡
off - regular TCP/IP routing
¡
on - bridge enabled, but the router is still available under its IP
address and thus may be managed remotely
7
¡
transparent - completely transparent bridge , inaccessible under
its IP address - this mode may be disabled only through the serial
console
Entering “bridge list” displays a list of MAC addresses with the
name of the interface on which certain address was heard.
Note: To make bridging work properly interfaces used in the process
have to be indicated. To enable bridging on a certain interface
enter “ifconfig <interface name> bridge on”.
®
Note: To enable bridging the Cisco HDLC link protocol should also be
selected using “g703 hdlc” command
3.3.4. con
The „con” command erases whole configuration from the
EEPROM. After rebooting the router it will return to its factory defaults.
Until the reboot it will continue to run with its current settings, which can
be saved again using “write” command.
3.3.5. config
The „config” command displays current configuration. The
command output may be entered on another router to make an exact
copy of the configuration.
3.3.6. console
This command is used to enable or disable password the
protection of the serial console. By default the console is unprotected
and user has full access to the router. By entering:
console passwd on
the password requirement is enabled and router will ask for it in the same
manner as during the telnet connection. To disable password protection
type:
console passwd off
3.3.7. dhcp
The “dhcp” command is used to configure DHCP/BOOTP server
and relay agent. The server is used to assign IP addresses, network
masks, gateway and DNS addresses and other parameters to the
3.3