Dynamix UM-A User Manual page 62

MRU: The MRU (Maximum Receive Unit) field indicates the maximum size IP packet that
the peer of PPP connection (this device) can receive. During the PPP negotiation, the peer of
the PPP connection will indicate its MRU and will accept any value up to that size. The
actual MTU of the PPP connection will be set to the smaller of the two (MTU and the peer's
MRU). In the normal negotiation, the peer will accept this MRU and will not send packet
with information field larger than this value.
Note : Range for MRU field is 0-32767, default value is 1492.
MTU: Maximum Transmission Unit (MTU) is the largest size packet that can be sent by the
modem. If the network stack of any packet is larger than the MTU value, then the packet will
be fragmented before the transmission. During the PPP negotiation, the peer of the PPP
connection will indicate its MRU and will accept any value up to that size. The actual MTU
of the PPP connection will be set to the smaller of the two (MTU and the peer's MRU).
Note : Range for MTU field is 0-32767, default value is 1492.
MSS: Maximum Segment Size is the largest size of data that TCP will send in a single,
unfragmented IP packet. The LAN client and the WAN host will indicate their MSS during
the TCP connection handshake.
Note : Range for MSS field is 0-32767, default value is 1432.
Lcp Echo Interval: This is the time interval, in seconds, between PPP session connection
attempts.
Note :Range for Lcp Echo Interval field is 0-32767, default value is 10.
Lcp Echo Maximum Consecutive Failure: This is the number of times a PPP session can fail
while trying to connect before stopping. If a PPP session fails this number of times, you must
manually reconnect the PPP session.
Note : Range for Lcp Echo Maximum Consecutive Failure field is 0-32767, default
value is 6.
Authentication: The different types of available authentications are:
Auto: When auto is selected, PAP mode will run by default. However, if PAP fails,
then CHAP will run as the secondary protocol. This is the default setting.
PAP: Password Authentication Procedure. Authentication is done through
username and password.
CHAP: Challenge-Handshake Authentication Protocol. Typically more secure than
PAP, CHAP uses username and password in combination with a randomly
generated challenge string which has to be authenticated using a one-way hashing
function.
Automatic Reconnect: When it is checked, the ADSL Router will reconnect a PPP session
when it is terminated by the ISP. If a PPP session is terminated under any other conditions
(i.e. by Disconnect Timeout or manual disconnect), the Automatic Reconnect will not
reconnect the session. This box is unchecked by default.
4/1 Port ADSL Router P 61