Routing and WAN connections
BAT54-Rail/F..
Release
7.54
06/08
11.2
IP routing
365
D 'class' (default): The network mask used in the RIP packet is derived
directly from the IP address class, i.e. the following network masks are
used for the network classes:
D 'address': The network mask is derived from the first bit that is set in
the IP address entered. This and all high-order bits within the network
mask are set. Thus, for example, the address 127.128.128.64 yields
the IP network mask 255.255.255.192.
D 'class + address': The network mask is formed from the IP address
class and a part attached after the address procedure. Thus, the
above-mentioned address and the network mask 255.255.0.0 yield the
IP network mask 255.128.0.0.
Note: Routers with RIP capabilities dispatch the RIP packets approximately
every 30 seconds.The router is only set up to send and receive RIPs if it
has a unique IP address.The IP RIP module is deselected in the default
setting using the IP address xxx.xxx.xxx.254.
11.2.5 SYN/ACK speedup
The SYN/ACK speedup method is used to accelerate IP data traffic. With
SYN/ACK speedup IP check characters (SYN for synchronization and ACK
for acknowledge) a given preference within the transmission buffer over sim-
ple data packets. This prevents the situation that check characters remain in
the transmission queue for a longer time and the remote station stop sending
data as a result.
The greatest effect occurs with SYN/ACK speedup with fast connections (e.
g. ADSL) when data quantities are simultaneously transferred in both direc-
tions at high speed.
The SYN/ACK speedup is activated at the factory.
Class A 255.0.0.0
Class B 255.255.0.0
Class C 255.255.255.0
To Next Page
Loading...
