From: cebuano (cebu2ccie@cox.net)
Date: Wed Jan 08 2003 - 14:02:24 GMT-3
Hi Tony,
This intrigued me so I mocked it up, and with/without a dialer string on
one side did NOT reproduce your problem of needing ppp authentication.
The reason I want to check this out is that I've seen this happen in the
past where it indicated this is an IOS release issue. Below is what I
found. If I'm off track here please correct me.
//With dialer string...
2504#ping 133.10.80.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 133.10.80.2, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 68/70/76 ms
2504#
00:18:19: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
2504#
00:18:20: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1,
changed state to up
2504#sh dialer
BRI0 - dialer type = ISDN
Dial String Successes Failures Last DNIS Last status
8358661 1 0 00:00:07 successful
Default
0 incoming call(s) have been screened.
0 incoming call(s) rejected for callback
2504#ping 133.10.80.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 133.10.80.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
2503#ping 133.10.80.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 133.10.80.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
// Without dialer string...
2504(config)#int bri0
2504(config-if)#no dialer string 8358661
2504(config-if)#^Z
2503#ping 133.10.80.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 133.10.80.2, timeout is 2 seconds:
00:25:34: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 32/32/32 ms
2503#
00:25:35: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1,
changed state to up
00:25:40: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 8358662
2503#ping 133.10.80.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 133.10.80.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
2503#ping 133.10.80.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 133.10.80.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
2504#ping 133.10.80.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 133.10.80.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/34/36 ms
2504#ping 133.10.80.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 133.10.80.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
2503#s
!
isdn switch-type basic-ni
!
interface BRI0
ip address 133.10.80.1 255.255.255.0
encapsulation ppp
no ip mroute-cache
dialer string 8358662
dialer-group 1
isdn switch-type basic-ni
isdn spid1 0835866101 8358661
isdn spid2 0835866301 8358663
!
dialer-list 1 protocol ip permit
!
2504#s
!
isdn switch-type basic-ni
!
interface BRI0
ip address 133.10.80.2 255.255.255.0
encapsulation ppp
dialer string 8358661
dialer-group 1
isdn switch-type basic-ni
isdn spid1 0835866201 8358662
isdn spid2 0835866401 8358664
!
dialer-list 1 protocol ip permit
!
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Tony Schaffran
Sent: Wednesday, January 08, 2003 12:02 AM
To: 'Tony Schaffran'; ccielab@groupstudy.com
Subject: ISDN issue - RESOLVED
Thank you to everyone that tried to help.
Authentication was the answer.
Tony Schaffran
Network Analyst
CCNP, CCNA, CCDA,
NNCDS, NNCSS, CNE, MCSE
CCOnlineLabs.com
http://www.cconlinelabs.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Tony Schaffran
Sent: Tuesday, January 07, 2003 12:38 PM
To: ccielab@groupstudy.com
Subject: ISDN issue
Is ther a problem with my ISDN switch, or am I just doing something
wrong?
This is my basic isdn configuration:
R6
interface BRI1/0
ip address 133.10.80.1 255.255.255.0
encapsulation ppp
dialer string 5555001
dialer-group 1
isdn switch-type basic-ni
isdn spid1 50355560010101 5556001
isdn spid2 50355560020101 5556002
R5
interface BRI0
ip address 133.10.80.2 255.255.255.0
encapsulation ppp
dialer string 5556001
dialer-group 1
isdn switch-type basic-ni
isdn spid1 50355550010101 5555001
isdn spid2 50355550020101 5555002
Pretty simple, right? I have ping connectivity from either side to the
other.
If I remove the dialer string from one side or the other, ISDN seems to
come
up normally, but I can no longer ping. Is this normal?
Thanks
.
.
.
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