From: Masood Malik (malikm24@xxxxxxxxxxx)
Date: Sun Apr 01 2001 - 01:52:11 GMT-3
Hi,
I have the following scenario.
1. ra to dials into rb. rb should not be able to initiate the dial
connection.
2. ra authenticates ppp chap to rb
3. rb doesnot authenticate ra
Following is the config I use. When I ping 10.1.1.2 from ra, the isdn line
comes up. I can see layer 3 connected and the packets traverse to router rb,
but the reply packets donot come come. I see encap failure on rb.
I could get this working by adding the dial string at the end of map
statement in rb (dialer map ip 10.1.1.1 name ra broadcast 7782001). This
allows to have rb to initiate dial into ra which is not needed in this
scenario.
Am I missing something here.
regards
Masood Malik
Following are the configs and debug.
*********************
Config router a
*******************
software ver 12.0.10 (2500)
hostname ra
!
enable password cisco
!
username rb password 0 cisco
ip subnet-zero
no ip domain-lookup
isdn switch-type basic-5ess
!
interface BRI0
ip address 10.1.1.1 255.255.255.0
no ip directed-broadcast
encapsulation ppp
dialer map ip 10.1.1.2 name rb broadcast 7782002
dialer-group 1
isdn switch-type basic-5ess
ppp authentication chap
!
ip classless
!
dialer-list 1 protocol ip permit
!
*******************
Conig router b
*******************
hostname rb
!
enable password cisco
!
username ra password 0 cisco
ip subnet-zero
isdn switch-type basic-5ess
!
interface BRI0
ip address 10.1.1.2 255.255.255.0
no ip directed-broadcast
encapsulation ppp
dialer map ip 10.1.1.1 name ra broadcast
dialer-group 1
isdn switch-type basic-5ess
!
ip classless
!
dialer-list 1 protocol ip permit
!
*************************************************
Ping response on router a with debug ip packet on
*************************************************
ra#ping 10.1.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.2, timeout is 2 seconds:
00:39:02: IP: s=10.1.1.1 (local), d=10.1.1.2 (BRI0), len 100, sending.
00:39:04: IP: s=10.1.1.1 (local), d=10.1.1.2 (BRI0), len 100, sending.
00:39:06: IP: s=10.1.1.1 (local), d=10.1.1.2 (BRI0), len 100, sending.
00:39:08: IP: s=10.1.1.1 (local), d=10.1.1.2 (BRI0), len 100, sending.
00:39:10: IP: s=10.1.1.1 (local), d=10.1.1.2 (BRI0), len 100, sending.
Success rate is 0 percent (0/5)
**********************************************
Response of the above seen from router b
**********************************************
00:32:59: IP: s=10.1.1.1 (BRI0), d=10.1.1.2 (BRI0), len 100, rcvd 3
00:32:59: IP: s=10.1.1.2 (local), d=10.1.1.1 (BRI0), len 100, sending
00:32:59: IP: s=10.1.1.2 (local), d=10.1.1.1 (BRI0), len 100, encapsulation
failed
00:33:01: IP: s=10.1.1.1 (BRI0), d=10.1.1.2 (BRI0), len 100, rcvd 3
00:33:01: IP: s=10.1.1.2 (local), d=10.1.1.1 (BRI0), len 100, sending
00:33:01: IP: s=10.1.1.2 (local), d=10.1.1.1 (BRI0), len 100, encapsulation
failed
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