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355 lines
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HTML
355 lines
13 KiB
HTML
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<meta name="Repository" content="CCEWP">
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<meta name="author" content="llgilber">
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<meta name="SearchPublicationDate" content="Mon, 23 Apr 2001 19:47:00 GMT">
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<meta name="FileOwner" content="llgilber">
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<meta name="FileName" content="bri-back-dp.html">
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<meta name="Folder" content="/warp/customer/129">
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<meta name="Object_ID" content="5145770">
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<meta name="Chronicle ID" content="5129194">
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<meta name="Revision" content="/main/CCO/2">
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<meta name="CCOCategoryType" content="Support">
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<meta name="PubDate" content="Wed, 25 Apr 2001 13:14:17 GMT">
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<meta name="PushDate" content="Wed, 25 Apr 2001 13:14:55 GMT">
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<meta name="ParentTree" content="/warp/customer/129">
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<meta name="Parents" content="/warp/customer/129">
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<meta name="Language" content="US_en">
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<meta http-equiv="Expires" content="4/23/02">
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<meta name="Glob97" content="Internetworking:ISDN:Sample_Configs,">
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<meta name="Keywords" content="BRI ddr dialer profile backup interface">
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<meta http-equiv="Owner" content="llgilber@cisco.com">
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<meta http-equiv="Reply-to" content="access-feedback@cisco.com">
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<meta name="Subject97" content="Internetworking:ISDN:Sample_Configs">
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<meta name="DocType" content="SampleConfig">
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<meta name="GENERATOR" content="Mozilla/4.76 [en] (Win98; U) [Netscape]">
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<title>Cisco - Configuring BRI Backup Interface with Dialer Profiles</title>
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<!-- source by npanicke -->
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<!-- reviewed by burgess,revieweruserid (no spaces after commas) -->
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<!-- posted to CCO by llgilber on 04/23/2001 -->
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<!-- updated per SMEuserid by TWuserid on MM/DD/YYYY -->
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<!-- re-certified by SMEuserid and TWuserid on MM/DD/YYYY -->
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</head>
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<body bgcolor="#FFFFFF">
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<br>This configuration uses a BRI circuit to backup a serial link. It also
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uses the Open Shortest Path First (OSPF) routing protocol between the two
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routers. Once the backup connection is activated, you must ensure that
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the routing table is updated to use the new backup link. Only one side
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(maui-soho-01) is configured to dial out. The other side (maui-nas-05)
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is configured to accept the call.
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<p>In this configuration we have a Cisco 1604 router connected to a Cisco
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3640 router using a serial connection. Both routers are also equipped with
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BRI interfaces that will be used for the backup link. The Cisco 1604 is
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running Cisco IOS<sup>®</sup> Software Release 12.1(5)T and the Cisco
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3640 is using Cisco IOS 12.1(2).
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<p><b>Note</b>: Configure and verify that the DDR connection (dialer 1
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with BRI0) is working properly before you configure the <b>backup interface</b>
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and <b>backup delay</b> commands. This will allow you to effectively manage
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troubleshooting dialer profiles, ISDN, Point-to-Point Protocol (PPP) and
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authentication issues before you configure the backup.
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<br>
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<table BORDER CELLPADDING=3 WIDTH="80%" BGCOLOR="#FFFFFF" valign="TOP" >
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<tr BGCOLOR="#CCCCFF">
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<th><b>maui-soho-01 (1600)</b></th>
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</tr>
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<tr>
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<td HEIGHT="1486">
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<pre>maui-soho-01#<b>show running-config
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</b>Building configuration...
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Current configuration : 1687 bytes
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!
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version 12.1
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no service single-slot-reload-enable
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service timestamps debug datetime msec
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service timestamps log datetime msec
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no service password-encryption
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!
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hostname maui-soho-01
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!
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logging rate-limit console 10 except errors
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aaa new-model
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aaa authentication login default local
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aaa authentication login NO_AUTHEN none
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aaa authentication ppp default local
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<i><font color="#3333FF">!--- basic AAA configuration for ppp calls
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</font></i>enable secret 5 <deleted>
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!
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username maui-nas-05 password 0 cisco
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<i><font color="#3333FF">!--- username for remote router (maui-nas-05) and
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shared secret
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!---(used for CHAP authentication)
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!--- shared secret must be the same on both sides
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</font></i>ip subnet-zero
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no ip finger
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!
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isdn switch-type basic-ni
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!
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interface Loopback0
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ip address 172.17.1.1 255.255.255.0
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<i><font color="#3333FF">!--- The loopback address will be used by OSPF for the
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router ID.
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</font></i>!
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interface Ethernet0
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ip address 172.16.1.1 255.255.255.0
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!
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interface Serial0
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<i><font color="#3333FF">!--- Primary Interface
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</font></i> backup delay 10 30
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<i><font color="#3333FF">!--- Backup link will be activated 10 seconds after
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primary link
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goes down.
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!--- Backup link will be deactivated 30 seconds after primary
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link
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is restored.
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</font></i> backup interface Dialer1
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<i><font color="#3333FF">!--- Interface Dialer 1 will provide backup.
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</font></i> ip address 192.168.10.2 255.255.255.252
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encapsulation ppp
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no fair-queue
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clockrate 64000
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ppp authentication chap
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!
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interface BRI0
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ip unnumbered Loopback0
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<i><font color="#3333FF">!--- unnumbered to the Loopback 0 address
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</font></i> encapsulation ppp
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dialer pool-member 10
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<i><font color="#3333FF">!--- Assign BRI0 as member of dialer pool 10.
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!--- Dialer pool 10 is specified in interface Dialer 1.
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</font></i> isdn switch-type basic-ni
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isdn spid1 51255511110101 5551111
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isdn spid2 51255511120101 5551112
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ppp authentication chap
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<i><font color="#3333FF">!--- Use ppp chap authentication.
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</font></i> ppp multilink
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!
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interface Dialer1
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<i><font color="#3333FF">!--- Dialer 1 provides backup for the serial link.
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</font></i> ip address 172.20.10.2 255.255.255.0
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<i><font color="#3333FF">!--- Address for the dialer interface.
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!--- The remote side dialer interface is in the same subnet.
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</font></i> encapsulation ppp
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dialer pool 10
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<i><font color="#3333FF">!--- defines Dialer pool 10
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!--- BRI 0 is a member of this pool.
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</font></i> dialer remote-name maui-nas-05
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<i><font color="#3333FF">!--- specifies remote router name
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!--- This name must match that used by the remote router to
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authenticate itself.
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</font></i> dialer idle-timeout 900
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<i><font color="#3333FF">!--- Idle timeout is set to 900 seconds (15 minutes).
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!--- The link will be disconnected if there is no interesting
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traffic for 900 secs.
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!--- Since OSPF hellos are interesting traffic, this will reset
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the idle timeout and
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!--- cause the link to stay up until the primary link is
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!--- restored.
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</font></i> dialer string 5552222
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<i><font color="#3333FF">!--- defines the destination routers phone number
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</font></i> dialer load-threshold 80 outbound
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<i><font color="#3333FF">!--- This sets the outbound load level for traffic at
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which
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!---additional connections will be added to the MP bundle load level.
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!--- Values range from 1 (unloaded) to 255 (fully loaded). The threshold
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!--- in this case is 80/255=32%.
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</font></i> dialer-group 1
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<i><font color="#3333FF">!--- apply interesting traffic definition from
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dialer-list 1
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</font></i> ppp authentication chap
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<i><font color="#3333FF">!--- use ppp chap authentication
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</font></i> ppp multilink
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!
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router ospf 5
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log-adjacency-changes
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network 172.16.1.0 0.0.0.255 area 0
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network 172.17.1.0 0.0.0.255 area 0
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network 172.20.10.0 0.0.0.255 area 0
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network 192.168.10.0 0.0.0.3 area 0
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!
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ip classless
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no ip http server
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!
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dialer-list 1 protocol ip permit
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<i><font color="#3333FF">!--- All IP traffic is designated as interesting.
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!--- This is applied to Interface Dialer 1 using dialer-group 1.
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!--- OSPF hello packets will trigger the dial.
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</font></i>!
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line con 0
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exec-timeout 0 0
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login authentication NO_AUTHEN
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transport input none
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line vty 0 4
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!
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end</pre>
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</td>
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</tr>
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</table>
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<table BORDER CELLPADDING=3 WIDTH="80%" BGCOLOR="#FFFFFF" valign="TOP" >
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<tr BGCOLOR="#CCCCFF">
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<th><b>maui-nas-05 (3640)</b></th>
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</tr>
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<tr>
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<td>
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<pre>maui-nas-05#<b>show running-config
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</b>Building configuration...
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Current configuration:
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!
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version 12.1
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service timestamps debug datetime msec
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service timestamps log datetime msec
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no service password-encryption
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!
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hostname maui-nas-05
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!
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aaa new-model
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aaa authentication login default local
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aaa authentication login NO_AUTHEN none
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aaa authentication ppp default local
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<i><font color="#0000FF">!--- basic AAA configuration for ppp calls
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</font></i>enable secret 5 <deleted>
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!
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username maui-soho-01 password 0 cisco
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<i><font color="#3333FF">!--- username for remote router (maui-soho-01) and
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shared secret
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!---(used for CHAP authentication)
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!--- shared secret must be the same on both sides
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</font></i>ip subnet-zero
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!
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isdn switch-type basic-ni
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!
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interface Loopback0
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ip address 172.22.1.1 255.255.255.0
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<i><font color="#0000FF">!--- The loopback address will be used by OSPF for the
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router ID.
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</font></i>!
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interface Ethernet0/0
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ip address 172.22.53.105 255.255.255.0
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!
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interface Ethernet0/1
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no ip address
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shutdown
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!
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interface BRI1/0
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ip unnumbered Loopback0
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<i><font color="#0000FF">!--- unnumbered to the Loopback 0 address
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</font></i> encapsulation ppp
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dialer pool-member 20
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<i><font color="#0000FF">!--- Assign BRI0 as member of dialer pool 20.
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!--- Dialer pool 20 is specified in interface Dialer 1.
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</font></i> isdn switch-type basic-ni
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isdn spid1 51255522220101 5552222
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isdn spid2 51255522230101 5552223
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ppp authentication chap
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<i><font color="#0000FF">!--- Use ppp chap authentication.
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</font></i> ppp multilink
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!
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<i><font color="#0000FF">! <<-- Unused interface configurations have been
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removed.
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</font></i>!
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interface Serial2/0
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<i><font color="#0000FF">!--- primary interface
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</font></i> ip address 192.168.10.1 255.255.255.252
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encapsulation ppp
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no fair-queue
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ppp authentication chap
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!
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<i><font color="#0000FF">! <<--Unused interface configurations have been
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removed.
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</font></i>!
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interface Dialer1
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<i><font color="#0000FF">!--- Dialer 1 provides backup for the serial link.
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</font></i> ip address 172.20.10.1 255.255.255.0
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<i><font color="#0000FF">!--- address for the dialer interface
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!--- The remote side dialer interface is in the same subnet.
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</font></i> encapsulation ppp
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dialer remote-name maui-soho-01
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<i><font color="#0000FF">!--- specifies remote router name
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!--- This name must match that used by the remote router to
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authenticate itself.
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</font></i> dialer pool 20
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<i><font color="#0000FF">!--- defines dialer pool 20
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</font></i> dialer idle-timeout 900
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<i><font color="#0000FF">!--- Idle timeout is set to 900 seconds (15 minutes).
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!--- This is equal to the idle timeout set on maui-soho-01.
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</font></i> Dialer max-call 4096
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dialer-group 1
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<i><font color="#0000FF">!--- apply interesting traffic definition from
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dialer-list 1
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</font></i> ppp authentication chap
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<i><font color="#0000FF">!--- Use ppp chap authentication.
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</font></i> ppp multilink
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!
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router ospf 5
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network 172.20.10.0 0.0.0.255 area 0
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network 172.22.1.0 0.0.0.255 area 0
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network 172.22.53.0 0.0.0.255 area 0
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network 192.168.10.0 0.0.0.3 area 0
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default-information originate
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<i><font color="#0000FF">!--- transmit ospf default information
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!--- This may be required for remote router to use the BRI DDR
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link.
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</font></i>!
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ip classless
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ip route 0.0.0.0 0.0.0.0 Ethernet0/0
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no ip http server
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!
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dialer-list 1 protocol ip permit
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<i><font color="#0000FF">!--- All IP traffic is designated as interesting.
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!--- This is applied to Interface Dialer 1 using dialer-group
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1.
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</font></i>!
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line con 0
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login authentication NO_AUTHEN
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transport input none
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line 97 102
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line aux 0
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line vty 0 4
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!
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end
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</pre>
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</td>
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</tr>
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</table>
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<h2>
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<a NAME="debug"></a>Debug and Show Commands</h2>
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Before issuing <b>debug</b> commands, please see <a
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href="http://www.cisco.com/warp/customer/793/access_dial/debug.html">Important
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Information on Debug Commands</a>.
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<ul><b>show isdn status</b> - Ensure that the router is properly communicating
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with the ISDN switch. In the output, verify that Layer 1 Status is ACTIVE,
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and that the Layer 2 Status state = MULTIPLE_FRAME_ESTABLISHED appears.
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This command also displays the number of active calls.
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<p><b>show ip interface brief</b> - This will show dialer 1(on maui-soho-01)
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in standby mode. Using dialer 1 as the backup interface means the physical
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interface (BRI0) is not dedicated to the backup. Therefor, BRI 0 can be
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used for normal DDR while the primary link is up
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<p><b>debug dialer</b> - This is used to display DDR information about
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the packets received on the dialer interface.
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<p><b>debug isdn events</b> - This is used to see ISDN activity occurring
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on the user side of the ISDN interface.
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<p><b>debug isdn q931</b> - Shows call setup and tear down of the ISDN
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network connection (Layer 3) between the router and the ISDN switch.
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<p><b>debug ppp negotiation</b> - Displays information on PPP traffic and
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||
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|
exchanges while negotiating the PPP components including Link Control Protocol
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||
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(LCP), Authentication, and NCP. A successful PPP negotiation will first
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||
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open the LCP state, then Authenticate, and finally negotiate NCP.
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||
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<p><b>debug ppp authentication</b> - Displays the PPP authentication protocol
|
||
|
|
messages, including Challenge Authentication Protocol (CHAP) packet exchanges
|
||
|
|
and Password Authentication Protocol (PAP) exchanges. If you observe a
|
||
|
|
failure verify that the chap username and password are configured correctly.
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||
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|
<p><b>debug ppp error</b> - This is used to display protocol errors and
|
||
|
|
error statistics associated with PPP connection negotiation and operation.</ul>
|
||
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<font size=-1></font>
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</body>
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</html>
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