
114062 Rev. A vii
One-Way Authentication ....................................................................................3-3
How the Router Uses CHAP Names and PAP IDs for Authentication ......................3-4
Asynchronous PPP .........................................................................................................3-6
IP Adjacent Hosts ...........................................................................................................3-7
ISDN Services ................................................................................................................3-8
BRI Service on the AN, ANH, and ASN ...................................................................3-9
B Channel Support ............................................................................................3-9
D Channel Support ............................................................................................3-9
BRI Leased-Line Operation for Germany ........................................................3-10
BRI Subaddresses ...........................................................................................3-10
Floating B Service for the AN and ANH ...........................................................3-10
PRI Service on the ASN, BLN, and BCN ...............................................................3-11
B Channel Support ..........................................................................................3-12
D Channel Support ..........................................................................................3-12
Selective PRI Service ......................................................................................3-12
PRI Multirate ....................................................................................................3-13
Placing Multirate Calls .....................................................................................3-13
Call Screening ........................................................................................................3-14
Rate Adaption ........................................................................................................3-14
Using the ping Command for ISDN Connections ...................................................3-16
Chapter 4
Dial-on-Demand Implementation Notes
Data Compression ..........................................................................................................4-1
PPP Multilink ..................................................................................................................4-2
Broadcast Traffic across Demand Circuits ......................................................................4-2
Static Routes ............................................................................................................4-3
IP RIP Triggered Updates and Broadcast Timers ....................................................4-3
IPX RIP and SAP Broadcast Timers ........................................................................4-4
Traffic Filters .............................................................................................................4-4
Dial Optimized Routing ............................................................................................4-5
What Happens When You Enable Dial Optimized Routing ................................4-5
Exceptions for Sending Routing Updates ..........................................................4-6
Maintaining the Routing Table ...........................................................................4-6
Protocol Prioritization ......................................................................................................4-7
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