Download e-book for iPad: Cisco - Troubleshooting ISDN by

Read Online or Download Cisco - Troubleshooting ISDN PDF

Similar networking books

Security in Distributed and Networking Systems - download pdf or read online

Safety concerns in allotted platforms and community structures are vitally important. This edited booklet presents a entire therapy on safety matters in those structures, starting from assaults to all types of recommendations from prevention to detection techniques. The booklet contains protection reviews in more than a few platforms together with peer-to-peer networks, disbursed platforms, web, instant networks, net carrier, e-commerce, cellular and pervasive computing.

Get Problem Solving with Fortran 90: For Scientists and PDF

I. l assessment for teachers the aim of this article is to supply an advent to the problem-solving functions of Fortran ninety. The meant viewers is undergraduate technology and engineering scholars who've no longer formerly taken a proper programming direction. the point of interest is at the strategy of fixing computational difficulties of curiosity to scientists and engineers, instead of on programming according to se, which has numerous very important implications for the contents of the textual content, as defined later within the Preface.

Additional info for Cisco - Troubleshooting ISDN

Example text

The Prefix Issue • Without PAP or CHAP Router 54321 Left 1st Call (from 40854321) 2nd Call (to 54321) 54321 Router Right 54321 Not Yet Connected 12345 • With PAP or CHAP Router 54321 Left Call (from 40854321) 54321 209 0913_04F9_c2 © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr Router Right Left Already Connected 12345 74 37 The Prefix Issue • PAP/CHAP enables you to know which site is connected • Without PAP or CHAP, this would be based on the ISDN calling number This is often problematic Calling number may not be present Calling number may be presented with/without prefixes Troubleshooting Ping remote int Debug dialer Sh isdn stat Debug PPP LCP Speed 56/64 Pap/chap NCP Ping remote net Tune cost • The net result is that without PAP or CHAP you would open two half-duplex B channels (instead of one full duplex) 209 0913_04F9_c2 75 © 1999, Cisco Systems, Inc.

Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 60 30 LCP Negotiation • Configure-Req proposes certain options • If all options are acceptable, the remote station returns a Configure-ACK Configure-Req Troubleshooting Ping remote int Debug dialer Sh isdn stat Debug PPP LCP Speed 56/64 Pap/chap NCP Ping remote net Tune cost Configure-ACK 209 0913_04F9_c2 61 © 1999, Cisco Systems, Inc. LCP Negotiation • In reality all PPP negotiations are double negotiations Configure-Req Configure-ACK Configure-Req Configure-ACK 209 0913_04F9_c2 © 1999, Cisco Systems, Inc.

All rights reserved. Printed in USA. scr Router Right Left Already Connected 12345 74 37 The Prefix Issue • PAP/CHAP enables you to know which site is connected • Without PAP or CHAP, this would be based on the ISDN calling number This is often problematic Calling number may not be present Calling number may be presented with/without prefixes Troubleshooting Ping remote int Debug dialer Sh isdn stat Debug PPP LCP Speed 56/64 Pap/chap NCP Ping remote net Tune cost • The net result is that without PAP or CHAP you would open two half-duplex B channels (instead of one full duplex) 209 0913_04F9_c2 75 © 1999, Cisco Systems, Inc.

Download PDF sample

Cisco - Troubleshooting ISDN


by Brian
4.3

Rated 4.04 of 5 – based on 15 votes