The most common method of configuring ISDN is with dialer maps, but dial information can also be configured on a logical interface. To pass the CCNA exam, you must know how to configure and troubleshoot both dialer maps and dialer profiles.
Laptop Battery
Dialer Profiles allow different dialing information to be configured onto logical interfaces. The logical interfaces may have different dialing destinations, different remote router names, etc., but they'll be using the same physical interface.
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Thinkpad
Dialer strings are used on dialer profiles. Note that each logical interface has a different IP address, a different remote router to dial, and a different dialer string, but they will be using the same physical interface to dial out. The commands dialer pool and dialer pool-member are used to link the logical and physical interfaces. The number following each command must match for the logical interface to correctly bind to the physical interface.
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Microsoft
R1(config)#interface dialer0
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Laptop Computers R1(config-if)#ip address 172.16.1.1 255.255.255.0
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Laptop Computer R1(config-if)#encapsulation ppp
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Desktop Computer <. The encapsulation type is placed on both the logical and physical interfaces. >
Notebooks R1(config-if)#dialer remote-name Remote0
Lenovo
Hard Drive R1(config-if)#dialer pool 1
Travelstar < places logical interface into dialer pool >
Gateway R1(config-if)#dialer string 5551212
Laptop Parts < number dialed to contact router Remote0 >
Software R1(config-if)#dialer-group 1
Hard Drives < links logical interface to dialer-list 1 >
Electronics
R1(config)#interface dialer1
Canon R1(config-if)#ip address 172.16.1.2 255.255.255.0
Desktop Pc R1(config-if)#encapsulation ppp
Desktop Computers R1(config-if)#dialer remote-name Remote1
Think Pad R1(config-if)#dialer pool 1
Repair R1(config-if)#dialer string 5551234
Data Recovery R1(config-if)#dialer-group 1
Cisco
R1(config)#interface bri0
Keyboard R1(config-if)#no ip address
Monitor < With dialer profiles, IP addresses are assigned to logical interfaces. >
Desktop R1(config-if)#encapsulation ppp
Infosys < The encapsulation type is place on both the logical and physical interfaces.>
Refurbished Laptops R1(config-if)#dialer pool-member 1
Wipro < The number associated with this command should match the number configured with the dialer pool number on the logical dialer interfaces. >
Lap Top R1(config-if)#isdn spid1 0835866101
Refurbished R1(config-if)#isdn spid2 0835866301
Memory
Intel When configuring dialer profiles, the encapsulation type should be placed on both the physical BRI interface and the logical dialer interfaces. The SPIDs are configured on the physical interface as well.
As400
Configuring dialer profiles can be a little tricky at first, and the best way to master this skill is to get real hands-on practice in your own CCNA / CCNP home lab or a rack rental service. Either way, hands-on is the best practice. Best of luck in your CCNA studies!
Averatec
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