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893-741-B
A8-1
Chapter A8
Point-to-Point Protocol (PPP)
This chapter describes the Model 5390 implementation of the standardized method for transmitting
datagrams from multiple protocols over serial point-to-point links. PPP provides three functions:
•
Asynchronous High-level Data Link Control (HDLC) to encapsulate the packets.
•
Link Control Protocol (LCP) to establish the connection between peers.
•
A family of Network Control Protocols (NCPs) to configure network interfaces.
PPP allows a site to use the Model 5390 server as a wide area network (WAN) hub, tying distant
corners of an IP network together over low cost phone lines. PPP features include:
•
FCS error checking.
•
Agreement by each end of the connection on a mutually acceptable set of features for that
connection.
•
Large Maximum Receive Unit (MRU) size—negotiations start
at 1500.
In setting up a PPP link:
•
You can attach a PC to the Model 5390 serial port. Using PPP as the network interface, the PC
becomes a host on the network. For a remote PC with a PPP client that supports scripting, you
can configure a port in CLI mode. Then, a user at a remote PC can dial into the Model 5390
server using a modem and convert the port from a CLI to a PPP link using the CLI ppp
command. After converting the port to a PPP link, the remote PC becomes a host directly
attached to the network.
•
Alternatively, you can set the Model 5390 port to auto_detect or auto_adapt. When the
Model 5390 server detects the PPP protocol on the line attached to the port, it automatically
converts the port mode to PPP and starts LCP negotiations.
•
If your PPP client is expecting to connect to a server already in ppp mode, the Model 5390
port’s mode must be ppp, auto_detect, or auto_adapt.
•
You can use PPP to connect two separate networks, routing data from one network to the other
over the PPP link.
NOTE:
The Model 5390 server cannot boot over a PPP link.
Содержание 5390
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Страница 44: ...893 741 B Preface xliv ...
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Страница 60: ...A1 12 893 741 B Introduction to the Model 5390 Server ...
Страница 106: ...A3 18 893 741 B Configuring Ports ...
Страница 142: ...A5 12 893 741 B Printers ...
Страница 152: ...A6 10 893 741 B Modems ...
Страница 168: ...A7 16 893 741 B Serial Line Internet Protocol SLIP ...
Страница 224: ...A9 38 893 741 B Internetwork Packet Exchange IPX Protocol ...
Страница 258: ...A11 12 893 741 B Dial up Networking ...
Страница 289: ...893 741 B A12 31 Internet Protocol IP Routing that are possible ...
Страница 506: ...A15 86 893 741 B Using Model 5390 Security ...
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Страница 508: ... Chapter B1 Network Administration Chapter B2 Simple Network Management Protocol SNMP Part B Network Administration ...
Страница 544: ...B1 36 893 741 B Network Administration ...
Страница 574: ...B2 30 893 741 B Simple Network Management Protocol SNMP ...
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Страница 606: ...C1 30 893 741 B na Commands ...
Страница 676: ...C2 70 893 741 B Configuration Parameters ...
Страница 772: ...C3 96 893 741 B Using the CLI Commands ...
Страница 794: ...C5 12 893 741 B Network Protocols ...
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Страница 796: ... Appendix D1 Software Reference Part D Appendixes ...