12
¡
dhcp network add <option name> <value>
¡
dhcp network del <option name> <value>
(instead of „network”, a „subnet” or „host” may be given; options
are described in 4.3.7.4), e.g. :
dhcp network add domain-name tahoe-group.com
Options are valid only for a given network, subnet or host.
Moreover two other parameters can be set:
¡
dhcp network default-lease-time <value>
Sets the time (in second), for which the IP address is assigned to
the station. After that time the station must inform the DHCP server that
it still uses that address. Otherwise the address will be considered as
unused. This timeout prevents blocking an IP address when a station is
switched off without releasing that address.
¡
dhcp network max-lease-time <value>
A station may request other lease time - the negotiated time may
not be higher than this setting.
3.3.7.8. dhcp default-lease-time <value>
dhcp max-lease-time <value>
These commands are similar to those described in the previous
paragraph, but their meaning is global.
3.3.8.
exit, quit
The command closes the configuration session and disconnects
from the router.
3.3.9.
fr
A group of commands used to configure the Frame Relay protocol
parameters. Following options are available:
¡
fr { ansi | q933a | cisco } -
selects the LMI signaling: ANSI
®
T1.617 Annex D, ITU Q.933 Annex A or Cisco LMI
¡
fr t391 <value>
- sets the T391 parameter, i.e. the number of
failed retries during the communication through the LMI, after
13
which the connection is considered as unusable
¡
fr n391 <value>
- sets the N391 parameter, i.e. the time
between subsequent LMI retries
¡
fr debug { on | off}
- enables and disables sending the Frame
Relay debugging information through syslog
3.3.10.
g703
This is a group of commands used to configure the G.703 link.
Following options are available:
¡
g703 { fr | ppp | hdlc | raw }
- selects the protocol used to
send data through the WAN port - Frame Relay, synchronous PPP,
®
®
Cisco HDLC or raw HDLC. The Cisco HDLC is recommended if
the router has to work in the bridge mode.
¡
g703
coding { ami | hdb3 } -
sets the line coding. HDB3 is
used by default and AMI is provided for compatibility only.
¡
g703 i
dle <hexadecimal value>
- sets the value sent in
unused timeslots
¡
g703 { short | long }
- selects the sensivity of the G.703
receiver. In the "short" mode the transceiver's range is 50m and in
"long" mode it is 2000m.
¡
g703 { on | off }
- switches the G.703 port on and off
The
Tahoe 1741
and
Tahoe 1748
routers have framed G.703
ports, which may be configured using following commands:
¡
g703 crc4 { on | off }
- switches the CRC4 transmission and
checking on and off
¡
g703 slots <comma separated list of timeslots or timeslot
ranges>
- selects timeslots used for transmission, for example:
"2-6,8,9,15-20"
¡
g703 unframed
- selects unframed mode where whole 2048
kbps are used for transmission
Entering “g703” alone displays current settings.
3.3.11.
http
The “http” command configures the built-in WWW server. It is
used to provide an easy way to read router's statistics. Server can be
enabled or disabled by entering, respectively:
http on
or
http off
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