Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Руководство по настройке

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To configure the router to ignore the LCP peer magic number mismatch and retain
the PPP connection, use the
ppp magic-number ignore-mismatch command from
Interface Configuration mode or Subinterface Configuration mode. For more
information, see “ppp magic-number ignore-mismatch” on page 280.
To verify configuration of LCP peer magic number validation on the router, you can
use the
show ppp interface command. For more information, see “show ppp
interface” on page 287.
Keep the following points in mind when configuring the router to ignore the peer
magic number mismatch and retain the PPP connection:
■
If the peer negotiates the magic number but sends the router an LCP echo request
or reply packet that contains a null or invalid magic number, the router strictly
terminates the PPP connection. The router can ignore a mismatch of the LCP
peer magic number only when the peer has not negotiated the magic number.
■
Using the ppp magic-number disable command to disable negotiation of the
magic number on the router does not affect validation of the peer magic number.
When you issue the
ppp magic-number disable command, the router sets only
the local magic number to null, but does not change or validate the peer magic
number. (For more information, see “ppp magic-number disable” on page 280.)
You can also configure validation of the LCP peer magic number for static MLPPP
interfaces, dynamic PPP interfaces, and dynamic MLPPP interfaces. For more
information about configuring static MLPPP interfaces, see “Configuring Multilink
PPP” on page 303. For more information about using profiles to configure dynamic
PPP and dynamic MLPPP interfaces, see “Configuring a Dynamic Interface from a
Profile” on page 563 in “Configuring Dynamic Interfaces” on page 515.
B-RAS Support
Broadband Remote Access Server (B-RAS) is an application that aggregates the output
from digital subscriber line access multiplexers (DSLAMs). B-RAS provides user PPP
sessions and PPP session termination and routes traffic onto the backbone. See
JUNOSe Broadband Access Configuration Guide for details on B-RAS.
The router provides an enhanced version of PPP to accommodate B-RAS with the
following features:
■
Internet Protocol Control Protocol (IPCP) extensions for Windows Internet Name
Service (WINS) and Domain Name System (DNS) name server addresses
■
Password Authentication Protocol (PAP)
■
Challenge Handshake Authentication Protocol (CHAP)
■
Keepalive timeout
■
Session timeout
■
Inactivity timeout
■
Accounting
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Overview
JUNOSe 11.1.x Link Layer Configuration Guide