ELSA LANCOM Business LC-4X00, Manual

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Operating modes and functions
ELSA LANCOM Business
50
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Authenticate phase
Passwords will then be exchanged, if necessary. The password will only be sent
once if PAP is being used for the authentication process. An encrypted password
will be sent periodically at adjustable intervals if CHAP is being used.
There may also be negotiation on a callback using CBCP (Callback Control Protocol)
during this phase.
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Network phase
The IPCP and IPXCP protocols have been implemented in the
ELSA LANCOM.
The IPCP and/or IPXCP network layers can be established following a successful
transfer of the password.
IP and/or IPS packets can be transferred from the router modules to the opened line
if the negotiation of parameters is successful for at least one of the network layers.
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Terminate phase
In the final phase the line is cleared, when the logical connections for all protocols
are cleared.
PPP negotiation in the ELSA LANCOM
The progress of a PPP negotiation is logged in the devices' PPP statistics and the protocol
packets listed in detail there can be used for checking purposes in the event of an error.
The PPP trace outputs offer a further method of analysis. You can use the command
trace + ppp
to begin output of the PPP protocol frames exchanged during a terminal session. You can
perform a detailed analysis once the connection has been broken if this terminal session
has been logged in a log file.
The PPP list
You can specify a custom definition of the PPP negotiation for each of the remote stations
that contact your net. The PPP list can be found in the
ELSA LANconfig in the
'Communication' configuration section on the 'Protocols' tab, or in the
/Setup/WAN-
module/PPP-list
menu.