Billion Electric Company BiPAC 8501/8521 - Manual (Page 56)

Billion BiPAC 8500/8501/8520/8521 SHDSL (VPN) Firewall Bridge/ Router
Chapter 4: Configuration
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Advanced Options (PPPoA)
• LLC Header: Select encapsulation mode, true for using LLC or false for using VC-Mux.
• Create Route: This setting specifies whether a route is to be added to the system after
IPCP (Internet Protocol Control Protocol) negotiation is complete. If set to enabled, a
route will be created which directs packets to the remote end of the PPP link.
• Specific Route: Specify whether the route created when a PPP link comes up is a
specific or default route. If set to enabled, the route created will only be applied to
packets for the subnet at the remote end of the PPP link. The address of this subnet is
obtained during IPCP negotiation.
• Subnet Mask: Set the subnet mask used for the local IP interface connected to the PPP
transport. If the value 0.0.0.0 is supplied, the netmask will be calculated from the class of
the IP address obtained during IPCP negotiation.
• Route Mask: Set the subnet mask used by the route that is created when a PPP link
comes up. If it is set to 0.0.0.0, the subnet mask is determined by the IP address of the
remote end of the link. The class of the IP address is obtained during IPCP (Internet
Protocol Control Protocol) negotiation.
• MRU: Maximum Receive Unit. This is negotiated during the LCP protocol stage.