ISDN
Types of ISDN are two:
- Basic rate Interface (BRI): Provides two B (each 64kbps) and 1 D (16kb) channels
- Primary rate Interface (PRI): Provides 23 B (each 64 kbps) and 1 D (64 Kbps) channels
Following must be configured to setup ISDN:
- ISDN interface type
- ISDN switch type
- Encapsulation Type
- ISDN SPID
Configuration
R1(conf)# int bri0
R1(config-if)# ip address 192.168.1.1 255.255.255.0
R1(config-if)# isdn switch-type basic-ni
R1(config-if)# isdn spid1 <spid number>
R1(config-if)# no shut
(if you try pinging to other router at this stage it will not ping, even if
status and line protocol both are up, utill you define the dial number)
R1(conf)# dialer-list 1 protocol ip permit
R1(conf)# int bri0
R1(config-if)# dialer-group 1
R1(config-if)# dialer map ip 192.168.1.2 name R2 broadcast <number to dial R2>
R2(conf)# int bri0
R2(config-if)# ip address 192.168.1.2 255.255.255.0
R2(config-if)# isdn switch-type basic-ni
R2(config-if)# isdn spid1 <spid number>
R2(config-if)# no shut
R2(conf)# dialer-list 1 protocol ip permit
R2(conf)# int bri0
R2(config-if)# dialer-group 1
R2(config-if)# dialer map ip 192.168.1.1 name R1 broadcast <number to dial R1>
