Cabletron Systems CSX400 - Manual (Page 77)

Configuring the PPP Protocol 4-13
CSX WAN Configuration
Figure 4-6. PPP Link Control Protocol ConÞguration Window
PPP Link Control Protocol Status Fields
The following information will appear for each interface conÞgured to use PPP:
If#
Displays the interface number. This number of logical interfaces will vary,
depending on the WPIM installed.
PhysIf#
IdentiÞes the lower-level interface number over which this PPP link is operating.
Local MRU
The Local MRU Þeld displays the Maximum Receive Unit (MRU) currently
conÞgured for the local WAN interface (the value that the remote entity is using
when sending packets to the local PPP entity). The MRU is the maximum length
of data information (including ÒpaddedÓ data octets, but excluding the Protocol
Þeld which identiÞes the datagramÕs protocol type) that can be received by this
interface. The default MRU size is 8191 octets. The auto-negotiation process may
establish another value for MRU if consent is given at both ends of the PPP link (if
either the local or remote PPP entity informs the other that larger packets can be
sent, or requests that smaller packets be sent).
NOTE
Currently the PhysIf# is not supported by the CSX; therefore, this Þeld will always
display zero.