Field
Description
•
(, . )
(default value): The newest packet received is
dropped.
•
? . )
: The oldest packet in the queue is dropped.
•
@ . )
: A randomly selected packet is dropped from
the queue.
Congestion Avoidance
(RED)
Enable or disable preventative deletion of data packets.
Packets which have a data size of between Min. queue size
and Max. queue size are preventively dropped to prevent
queue overflow (RED=Random Early Detection). This proced-
ure ensures a smaller long-term queue size for TCP-based data
traffic, so that traffic bursts can also usually be transmitted
without large packet losses.
The function is activated with
,
.
The function is disabled by default.
Min. queue size
Enter the lower threshold value for the process prevention of
data congestion (RED) in bytes.
Possible values are
to
$
.
The default value is
.
Max. queue size
Enter the upper threshold value for the process prevention of
data congestion (RED) in bytes.
Possible values are
to
$
.
The default value is
$
.
14.5 Access Rules
Accesses to data and functions are restricted with access lists (which user gets to use
which services and files).
You define filters for IP packets in order to allow or block access from or to the various
hosts in connected networks. This enables you to prevent undesired connections being set
up via the gateway. Access lists define the type of IP traffic the gateway is to accept or
deny. The access decision is based on information contained in the IP packets, e.g.:
14 Networking
Teldat GmbH
226
bintec Rxxx2/RTxxx2
