ISDN DDR Config sequence for 801 exam

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What's the necessary steps in sequence to configure DDR on a ISDN Bri
interface?

Sybex has the sequence as follows, page 512
1. Interface
2. IP address
2. Encapsulation
4. Dialer-Group
5. Dialer-String

Boson has it, Chapter 10 Page 19
1. Interface
2. Encapsulation
3. IP address
4. Dialer-Group
5. Dialer-string

Cisco Press Self Study ICND, page 342
1. Interface
2. IP address
3. Dialer-list
4. Encapsulation
5. Dialer-String
6. Dialer-Group

Going NUTS
Steve C.




Re: ISDN DDR Config sequence for 801 exam


There is no dependency on the configuration of interface IP address and
encapsulation, dialer-string and dialer-group.

KPLAB
http://www.kp-lab.com - Free CCNA Study Guide



Re: ISDN DDR Config sequence for 801 exam


while there may be no official order and that any of the above would
apply and get DDR working, I would make sure that the interface was
shutdown first, the encapsulation chosen before setting an IP address
just to rule out problems with the router choosing to work on the
connection with the prior chosen or default encapsulation (HDLC). Then
finally, to bring up the connection i would issue a `no shutdown` command.

Here is a config that i used that worked.


access-list 111 permit tcp any host 172.28.3.5 eq 25
access-list 111 permit tcp any host 172.28.3.5 eq 80
!
dialer-list 2 protocol ip list 111
!
interface bri 0
  shutdown
  encapsulation ppp
  ip address 172.28.3.4 255.255.255.0
  dialer string 1465142533
  dialer group 2
  no shutdown

Regards,
Shalom

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