
VT100 Interface 4-25
CHAP Secret
Enter the Secret (i.e., password) necessary to challenge the peer.
Values: (User Established)
Default: Secret
Initiate Negotiation
Determines whether the port actively negotiates with the peer site or passively
waits for negotiation requests.
Values: Yes, No
Default: Yes
Parameters to Negotiate
The table displayed near the bottom of the PPP Service Details screen shows
which parameters are set to be negotiated. You can specify which parameters
should be negotiated by selecting the desired option. The table below
describes the parameters that can be negotiated.
PPP Statistics
Selecting the “PPP Statistics” prompt brings up a table (Figure 4.21) that
reports on traffic.
Parameter Description
Protocol Header
Compression
Compresses PPP protocol headers.
Default = Yes
IPCP Compression Compresses TCP headers using Van Jacobsen compression.
Default = Yes
MRU Informs the peer that the implementation can receive larger
packets, or requests that the peer send smaller packets.
Default = Yes
HDLC Address
Compression
Negotiates the compression of high-level data link control
(HDLC) addresses.
Default = Yes
IP Address Dynamically negotiates for IP addresses; otherwise, it is
assumed both sides know each other’s IP addresses.
Default = Yes
ACCM Negotiates the use of control character transparency on
asynchronous links.
Default = Yes
Magic Number Unique numbers useful for detecting loopbacks.
Default = Yes
PAP Authentication scheme used by PPP servers to validate the
identity of the originator of the connection.
Default = No
CHAP Authentication scheme used by PPP servers to validate the
identity of the originator of the connection upon connection or at
any later time.
Default = No
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