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S6C5 – Dialer Profiles

S6C5 – Dialer Profiles. Chapter Outline. 5.1 Legacy DDR 5.1.1 Legacy DDR with a single destination 5.1.2 Legacy DDR with multiple destinations 5.1.3 Rotary groups overview 5.1.4 Using rotary groups 5.1.5 Configuring rotary groups 5.1.6 Configuring ISDN for dialer rotary groups

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S6C5 – Dialer Profiles

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  1. S6C5 – Dialer Profiles

  2. Chapter Outline • 5.1 Legacy DDR • 5.1.1 Legacy DDR with a single destination • 5.1.2 Legacy DDR with multiple destinations • 5.1.3 Rotary groups overview • 5.1.4 Using rotary groups • 5.1.5 Configuring rotary groups • 5.1.6 Configuring ISDN for dialer rotary groups • 5.1.7 Asynchronous interface groups • 5.1.8 Legacy DDR limitations • 5.2 Dialer Profiles • 5.2.1 Overview of dialer profiles • 5.2.2 Configuring dialer profiles • 5.2.3 Dialer pools • 5.2.4 Placing calls with dialer profiles • 5.2.5 Receiving calls with dialer profiles • 5.2.6 Using dialer profiles with ISDN B channels • 5.2.7 Dialer map class

  3. Legacy DDR Has Support For • Frame Relay • The International Organization for Standardization Connectionless Network Service (ISO CLNS) • The Link Access Procedure Balanced (LAPB) protocol • Snapshot routing • All routed protocols that are supported on Cisco routers. • BAD NEWS IS: legacy DDR's limitations can adversely affect growth.

  4. DDR Limitations • Locks a physical interface into one configuration. • For example, DDR BRI0 can have only one Internet Protocol (IP) address, one encapsulation type, and one set of dialer timers. • Legacy DDR configuration uses dialer map statements • The Basic Rate Interface (BRI) can only dial multiple hosts but must use same Point-to-Point Protocol (PPP) and dialer idle-timeout values when connected Alternative: DDR with dialer profiles

  5. Dialer Interfaces • Allows you to propagate an interface configuration to multiple interfaces • Interface dialer 0 • Int bri 0 • Dialer rotary-group 1 • Int bri 1 • Dialer rotary-group 2 • Physical interfaces inherit the dialer interface configuration parameters.

  6. Hunt Groups • Incoming calls use first number in group of numbers that is available • Used for customer access numbers • Can also be used for outgoing calls • Console line can’t be part of a rotary group

  7. Commands • Dialer int 0 • Ip address 123.23.2.1 255.255.0.0 secondary • IP address 142.1.2.1 255.255.0.0 • No ip directed broadcast • Dialer in-band • Dialer idle-timeout 180 • Dialer fast-idle 80 • Dialer-map ip 122.1.1.1 name Godzila 1132222 • Dialer-group 2 • PPP authentication chap

  8. Configuring ISDN for Dialer Interface • A physical interface can belong to only one dialer rotary group • Dialer rotary-group command can be used with any dial-up interface • async, BRI, PRI, and serial. • Some of the configuration may still have to perform on the physical interface • separate SPIDs will have to be entered at each of the physicalBRI interfaces. • Ask your provider for one phone number to be used as a hunt group • Using one number requires only one set of dialer map statements on the remote routers

  9. Asynchronous Interface Command • Configures a "group" interface. • Can configure the group interface to include multiple asynchronous interfaces as members. • Router (config)#interface group-async • Router (config-if)# group-range 1 8 • Note: Interfaces can’t be configured separately

  10. Dialer Profiles • Dialer profiles separate the logical configuration from the interface that receives or makes calls • Defines encapsulation • Access control lists (ACLs) • Turns features on/off • Logical and physical configurations are dynamically bound to each other on a per-call basis • Physical interface can be used by multiple dialer interfaces

  11. Configuring Dialer Profiles • When using dialer profiles, the IOS will not allow configuring the dialer interface with a dialer map command • Dialer map command maps the phone number to an IP address and identifies the remote host's name for the purposes of CHAP or PAP authentication • Use the dialer string command with dialer profiles • (config-if)#Dialer-string stringnumber • (config-if)# Dialer remote-name username • Physical interface can belong to many pools

  12. Dialer Profiles Allow • You can configure B channels of an ISDN interface with different IP subnets or IPX networks. • You can use different encapsulations on B channels of an ISDN interface. • You can set different DDR parameters for B channels of an ISDN interface. • You can optimize the use of available ISDN B channels by letting ISDN BRIs belong to multiple dialer pools.

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