DDR Snapshot Using Dialer Profiles [Dial-on-Demand Routing (DDR)]

Document ID: 9347

Introduction
Prerequisites
      Requirements
      Components Used
      Conventions
Configure
      Network Diagram
      Configurations
Verify
      Client Side (Initiates Calls)
      Server Side (Receives Calls)
Troubleshoot
      Troubleshooting Commands
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Related Information

Introduction

This document provides a sample configuration for Dial-on-Demand Routing (DDR) snapshot configured with dialer-profile instead of rotary dialer, as is usually the case.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

The information in this document is based on these software and hardware versions:

Cisco IOS® Software Release 12.0(15).
Cisco IOS Software Release 12.0(16).

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Conventions

For more information on document conventions, refer to Cisco Technical Tips Conventions.

Configure

In this section, you are presented with the information to configure the features described in this document.

Note: To find additional information on the commands used in this document, use the Command Lookup Tool ( registered customers only) .

Network Diagram

This document uses this network setup:

Configurations

This document uses these configurations:

Client Side (Initiates Calls)
Server Side (Receives Calls)

Client Side (Initiates Calls)

kheops

service timestamps debug datetime msec
service timestamps log datetime msec
!
hostname kheops
!
username djeser password 0 <password>
isdn switch-type basic-net3
!
!
interface BRI0
description line isdn 6116
no ip address
no ip directed-broadcast
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer pool-member 1
isdn switch-type basic-net3
!
interface Dialer1
ip address 10.10.0.1 255.255.255.252
no ip directed-broadcast
encapsulation ppp
dialer remote-name djeser
dialer idle-timeout 30
dialer string 6115
dialer snapshot 1 

!--- Enable snapshot for the dialer.

dialer pool 1
dialer-group 1
snapshot client 5 8 dialer

!--- Defined as the client.

ppp authentication chap
!
router ripnetwork 10.0.0.0
network 200.200.0.0
!
!
dialer-list 1 protocol ip permit
!
line con 0
line aux 0
line vty 0 4
!
end

Server Side (Receives Calls)

djeser

service timestamps debug datetime msec
service timestamps log datetime msec
!
hostname djeser
!
username kheops password 0 <password>
isdn switch-type basic-net3
!
interface Loopback0
ip address 201.0.0.1 255.255.255.0
no ip directed-broadcast
!
interface BRI0
description line isdn 6115
no ip address
no ip directed-broadcast
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
no peer default ip address
ppp authentication chap
!
interface Dialer1
ip address 10.10.0.2 255.255.255.252
no ip directed-broadcast
encapsulation ppp
dialer remote-name kheops
dialer string 6116
dialer pool 1
dialer-group 1
snapshot server 5 dialer 

!--- This is the same as legacy DDR.

ppp authentication chap
end
!
router rip
passive-interface Ethernet0
network 10.0.0.0
network 201.0.0.0
!
ip route 0.0.0.0 0.0.0.0 10.200.16.1
!
dialer-list 1 protocol ip permit
!
!
line con 0
exec-timeout 0 0
password <password>
length 0
transport input none
line aux 0
x25 subaddress 4
rotary 5
autocommand x28
line vty 0 4
password <password>
login
!
end

Verify

This section provides information you can use to confirm your configuration is working properly.

Certain show commands are supported by the Output Interpreter Tool ( registered customers only) , which allows you to view an analysis of show command output.

show dialer—shows general diagnostic information for interfaces configured for DDR.
show snapshot—displays snapshot routing parameters associated with an interface.
show ip route—displays IP routing table entries.

Client Side (Initiates Calls)

   kheops#show dialer

   BRI0 - dialer type = ISDN

   Dial String Successes Failures Last called Last status
   0 incoming call(s) have been screened.
   0 incoming call(s) rejected for callback.

   BRI0:1 - dialer type = ISDN
   Idle timer (30 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is data link layer up
   Dial reason: snapshot 
   
!--- Snapshot triggered the call.

   Interface bound to profile Di1
   Time until disconnect 29 secs
   Current call connected 00:05:20
   Connected to 6115 (6115)

   BRI0:2 - dialer type = ISDN
   Idle timer (120 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is idle

   Di1 - dialer type = DIALER PROFILE
   Idle timer (30 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is data link layer up

   Dial String Successes Failures Last called Last status
   6115 11 0 00:05:20 successful Default

   kheops#show snapshot
   Dialer1 is up, line protocol is upSnapshot client
   Options: dialer support
   Length of active period: 5 minutes
   Length of quiet period: 8 minutes
   Length of retry period: 8 minutes
   For dialer address 1
   Current state: active, remaining/exchange time: 0/6 minutes
   Connected dialer interface: 
   BRI0:1
   Updates received this cycle: ip

   kheops#show snapshot
   Dialer1 is up, line protocol is upSnapshot client
   Options: dialer support
   Length of active period: 5 minutes
   Length of quiet period: 8 minutes
   Length of retry period: 8 minutes
   For dialer address 1
   Current state: client post active->quiet, remaining time: 2 minutes
   Updates received this cycle: ip

   *Mar 2 15:33:59.138: BR0:1 DDR: idle timeout
   *Mar 2 15:33:59.142: BR0 DDR: has total 2 call(s), dial_out 0, dial_in 0
   *Mar 2 15:33:59.142: %DIALER-6-UNBIND: Interface BR0:1 unbound from profile Di1
   *Mar 2 15:33:59.146: BR0:1 DDR: disconnecting call
   *Mar 2 15:33:59.150: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected from 6115
   6115, call lasted 388 seconds
   *Mar 2 15:33:59.222: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
   *Mar 2 15:33:59.250: BR0:1 DDR: disconnecting call
   *Mar 2 15:33:59.258: BR0:1 DDR: disconnecting call
   *Mar 2 15:34:00.222: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1,
   changed state1 to down

   
!---  Here, the call is disconnected due to the idle-timeout.   
   !--- Snapshot in post active state:

   kheops#show snapshot 
   Dialer1 is up, line protocol is upSnapshot client
   Options: dialer support
   Length of active period: 5 minutes
   Length of quiet period: 8 minutes
   Length of retry period: 8 minutes
   For dialer address 1
   Current state: client post active->quiet, remaining time: 0 minutes
   Updates received this cycle: ip

   *Mar 2 15:36:29.866: SNAPSHOT: Dialer1[1]: moving to quiet queue


!--- The snapshot state changes to quiet:

   kheops#show snapshot
   Dialer1 is up, line protocol is upSnapshot client
   Options: dialer support
   Length of active period: 5 minutes
   Length of quiet period: 8 minutes
   Length of retry period: 8 minutes
   For dialer address 1
   Current state: quiet, remaining: 7 minutes


!--- This changes from snapshot state to active call generated:

   *Mar 2 16:01:31.130: BR0 DDR: rotor dialout [priority]
   *Mar 2 16:01:31.134: BR0 DDR: Dialing cause snapshot
   *Mar 2 16:01:31.134: BR0 DDR: Attempting to dial 6115
   *Mar 2 16:01:31.138: SNAPSHOT: Dialer1[1]: Move to active queue 
   (Quiet timer expired)
   *Mar 2 16:01:31.138: SNAPSHOT: Dialer1[1]: moving to active queue
   *Mar 2 16:01:31.394: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
   *Mar 2 16:01:31.426: SNAPSHOT: Dialer1[1]: Avoiding active: in active queue    
   (Dial connection set)
   *Mar 2 16:01:31.430: %DIALER-6-BIND: Interface BR0:1 bound to profile Di1
   *Mar 2 16:01:31.434: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 6115    
   *Mar 2 16:01:31.506: BR0:1 DDR: dialer protocol up
   *Mar 2 16:01:32.486: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1,
   changed state to up
   *Mar 2 16:01:37.438: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 6115
   6115

   kehosp#show snapshot
   Dialer1 is up, line protocol is upSnapshot client
   Options: dialer support
   Length of active period: 5 minutes
   Length of quiet period: 8 minutes
   Length of retry period: 8 minutes
   For dialer address 1
   Current state: active, remaining/exchange time: 5/0 minutes
   Connected dialer interface: 
   BRI0:1

   kheops#show dialer

   BRI0 - dialer type = ISDN

   Dial String Successes Failures Last called Last status
   0 incoming call(s) have been screened.
   0 incoming call(s) rejected for callback.

   BRI0:1 - dialer type = ISDN
   Idle timer (30 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is data link layer up
   Dial reason: snapshot
   Interface bound to profile Di1
   Time until disconnect 29 secs
   Current call connected 00:00:15
   Connected to 6115 (6115)

   BRI0:2 - dialer type = ISDN
   Idle timer (120 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is idle

   Di1 - dialer type = DIALER PROFILE
   Idle timer (30 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is data link layer up

   Dial String Successes Failures Last called Last status
   6115 13 0 00:00:15 successful Default
   *Mar 2 16:02:01.166: SNAPSHOT: Dialer1[1]: Starting aging of ip protocol

   kheops#show ip route
   Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
   D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
   N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
   E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
   i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
   U - per-user static route, o - ODR

   Gateway of last resort is 10.10.0.2 to network 0.0.0.0

   C 200.200.0.0/24 is directly connected, Loopback0
   R 201.0.0.0/24 [120/1] via 10.10.0.2, 00:00:04, Dialer1
   10.0.0.0/8 is variably subnetted, 3 subnets, 3 masks
   C 10.10.0.0/30 is directly connected, Dialer1
   C 10.10.0.2/32 is directly connected, Dialer1
   C 10.200.16.0/24 is directly connected, Ethernet0
   R* 0.0.0.0/0 [120/1] via 10.10.0.2, 00:00:04, Dialer1

Server Side (Receives Calls)

   djeser#show ip route
   Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
   D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
   N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
   E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
   i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
   U - per-user static route, o - ODR

   Gateway of last resort is 10.200.16.1 to network 0.0.0.0

   R 200.200.0.0/24 [120/1] via 10.10.0.1, 00:00:10, Dialer1
   C 201.0.0.0/24 is directly connected, Loopback0
   172.17.0.0/24 is subnetted, 1 subnets
   S 172.17.247.0 [1/0] via 10.200.16.1
   S 144.254.0.0/16 [1/0] via 10.200.16.1
   10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
   C 10.10.0.0/30 is directly connected, Dialer1
   C 10.200.16.0/24 is directly connected, Ethernet0
   S 10.200.20.0/24 [1/0] via 10.200.16.1
   S* 0.0.0.0/0 [1/0] via 10.200.16.1


!--- There are no active calls, but the route is included in the table:

   djeser#show dialer

   BRI0 - dialer type = ISDN

   Dial String Successes Failures Last called Last status
   0 incoming call(s) have been screened.
   0 incoming call(s) rejected for callback.

   BRI0:1 - dialer type = ISDN
   Idle timer (120 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is idle

   BRI0:2 - dialer type = ISDN
   Idle timer (120 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is idle

   Di1 - dialer type = DIALER PROFILE
   Idle timer (120 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is idle

   Dial String Successes Failures Last called Last status
   6116 1 0 00:00:38 successful Default


!--- Here, the call is triggered by the snapshot client:

   *Mar 8 21:48:40.484: %DIALER-6-BIND: Interface BR0:1 bound to profile Di1
   *Mar 8 21:48:40.484: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
   *Mar 8 21:48:41.696: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1,
   changed state to up
   *Mar 8 21:48:46.520: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 6116
   kheops

   djeser#show dialer

   BRI0 - dialer type = ISDN

   Dial String Successes Failures Last called Last status
   0 incoming call(s) have been screened.
   0 incoming call(s) rejected for callback.

   BRI0:1 - dialer type = ISDN
   Idle timer (120 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is data link layer up
   Interface bound to profile Di1
   Time until disconnect 119 secs
   Current call connected 00:01:10
   Connected to 6116 (kheops)

   BRI0:2 - dialer type = ISDN
   Idle timer (120 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is idle

   Di1 - dialer type = DIALER PROFILE
   Idle timer (120 secs), Fast idle timer (20 secs)
   Wait for carrier (30 secs), Re-enable (15 secs)
   Dialer state is data link layer up

   Dial String Successes Failures Last called Last status
   6116 1 0 00:01:11 successful Default

   djeser#show snapshot
   Dialer1 is up, line protocol is upSnapshot server
   Options: dialer support
   Length of active period: 5 minutes
   For ip address: 10.10.0.1
   Current state: active, remaining time: 4 minutes
   Connected dialer interfaces: 
   BRI0:1, BRI0:2

   djeser#show ip route
   Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
   D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
   N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
   E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
   i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
   U - per-user static route, o - ODR

   Gateway of last resort is 10.200.16.1 to network 0.0.0.0 

   R 200.200.0.0/24 [120/1] via 10.10.0.1, 00:00:11, Dialer1
   C 201.0.0.0/24 is directly connected, Loopback0
   172.17.0.0/24 is subnetted, 1 subnets
   S 172.17.247.0 [1/0] via 10.200.16.1
   S 144.254.0.0/16 [1/0] via 10.200.16.1
   10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks
   C 10.10.0.0/30 is directly connected, Dialer1
   C 10.10.0.1/32 is directly connected, Dialer1
   C 10.200.16.0/24 is directly connected, Ethernet0
   S 10.200.20.0/24 [1/0] via 10.200.16.1
   S* 0.0.0.0/0 [1/0] via 10.200.16.1

Troubleshoot

Troubleshooting Commands

Certain show commands are supported by the Output Interpreter Tool ( registered customers only) , which allows you to view an analysis of show command output.

Note: Before issuing debug commands, refer to Important Information on Debug Commands.

debug dialer [events | packets]—displays DDR debugging information about the packets received on a dialer interface.
debug snapshot—lists the change in state of the snapshot operation.

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Updated: Jan 29, 2008

Document ID: 9347

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Dial-on-Demand Routing (DDR)