Configure Advanced interfaces settings
Digi TransPort User Guide
315
PPP Negotiation parameters
When PPP starts up, the devices at both ends of the link negotiate the link parameters, in order to
find a common subset that both devices can use. The negotiation may be summarized by saying
that both ends send negotiation packets with the following message:
these are the values that I wish to use and these are the values that I wish you to use.
Restrict the negotiation time to s seconds
The maximum time allowed for a PPP negotiation to complete. If negotiations have not
completed in this time, the PPP instance is disconnected.
Desired local ACCM
The local Asynchronous Control Character Map which has the default value
0x00000000
.
Changing this value is for advanced users.
Desired remote ACCM
The remote ACCM which has the default value
0xffffffff
. As above, the default will work in
nearly all circumstances and should be changed only where really necessary.
Desired local MRU n bytes
The desired local Maximum Receive Unit (MRU), the default value of
1500
octets will work fine
in most cases.
Desired remote MRU n bytes
The value in this text box is the desired MRU for the remote end of the link. The default value
of
1500
octets will be fine in most cases.
Request local ACFC
When enabled, causes the router to request Address Control Field Compression (ACFC). When
negotiated, the address/control fields are removed from the start of the PPP header.
Request remote ACFC
When checked, this checkbox causes the router to ask the remote device to request ACFC.
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