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Cisco 1720 ISDN BRI to Bay ARN router: chap problem

Hi, we can connect with Bay router to our Cisco with no problem. But the other way around gives problems. It seems he connects but then he disconnects immediately. Can't give config of Bay as it is at client side. But hereby the log on our cisco router. According to me it's something with chap authenticaton but not sure. Anybody any idea? Where can you find info on how to interpret this log? THANKS

6w6d: ISDN BR0: TX -> RELEASE pd = 8 callref = 0x75

6w6d: Cause i = 0x8090 - Normal call clearing

6w6d: Vi1 IPCP: State is Closed

6w6d: Vi1 CDPCP: State is Closed

6w6d: ISDN BR0: RX <- RELEASE_COMP pd = 8 callref = 0xF5

6w6d: Vi1 PPP: Missed link down notification

6w6d: Vi1 PPP: Phase is TERMINATING

6w6d: Vi1 LCP: State is Closed

6w6d: Vi1 PPP: Phase is DOWN

6w6d: ISDN BR0: TX -> SETUP pd = 8 callref = 0x76

6w6d: Bearer Capability i = 0x8890

6w6d: Channel ID i = 0x83

6w6d: Called Party Number i = 0x80, 'xxxxxxx', Plan:Unknown, Type:Unk

nown

6w6d: ISDN BR0: RX <- SETUP_ACK pd = 8 callref = 0xF6

6w6d: Channel ID i = 0x8A

6w6d: ISDN BR0: RX <- CALL_PROC pd = 8 callref = 0xF6

6w6d: ISDN BR0: RX <- CONNECT pd = 8 callref = 0xF6

6w6d: Display i = 'NO', 0x20, 'NAME', 0x20, 'AVAILABLE'

6w6d: Connected Number i = 0x218331353236303

6w6d: ISDN BR0: TX -> CONNECT_ACK pd = 8 callref = 0x76

6w6d: %LINK-3-UPDOWN: Interface BRI0:2, changed state to up

6w6d: BR0:2 PPP: Treating connection as a callout

6w6d: BR0:2 PPP: Phase is ESTABLISHING, Active Open

6w6d: BR0:2 PPP: No remote authentication for call-out

6w6d: BR0:2 CHAP: Using alternate hostname xxxxxxx

6w6d: BR0:2 LCP: O CONFREQ [Closed] id 159 len 30

6w6d: BR0:2 LCP: MagicNumber 0xFE050022 (0x0506FE050022)

6w6d: BR0:2 LCP: MRRU 1524 (0x110405F4)

6w6d: BR0:2 LCP: EndpointDisc 1 Local (0x1310016B62635F616363656E74757265)

6w6d: BR0:2 LCP: I CONFACK [REQsent] id 159 len 30

6w6d: BR0:2 LCP: MagicNumber 0xFE050022 (0x0506FE050022)

6w6d: BR0:2 LCP: MRRU 1524 (0x110405F4)

6w6d: BR0:2 LCP: EndpointDisc 1 Local (0x1310016B62635F616363656E74757265)

6w6d: BR0:2 LCP: I CONFREQ [ACKrcvd] id 1 len 32

6w6d: BR0:2 LCP: MRRU 1500 (0x110405DC)

6w6d: BR0:2 LCP: EndpointDisc 3 0100.a2f8.e4a9 (0x1309030100A2F8E4A9)

6w6d: BR0:2 LCP: AuthProto CHAP (0x0305C22305)

6w6d: BR0:2 LCP: MagicNumber 0x67D8E24C (0x050667D8E24C)

6w6d: BR0:2 LCP: LinkDiscriminator 4672 (0x17041240)

6w6d: BR0:2 LCP: O CONFREJ [ACKrcvd] id 1 len 8

6w6d: BR0:2 LCP: LinkDiscriminator 4672 (0x17041240)

6w6d: BR0:2 LCP: I CONFREQ [ACKrcvd] id 2 len 28

6w6d: BR0:2 LCP: MRRU 1500 (0x110405DC)

6w6d: BR0:2 LCP: EndpointDisc 3 0100.a2f8.e4a9 (0x1309030100A2F8E4A9)

6w6d: BR0:2 LCP: AuthProto CHAP (0x0305C22305)

6w6d: BR0:2 LCP: MagicNumber 0x67D8E24C (0x050667D8E24C)

6w6d: BR0:2 LCP: O CONFACK [ACKrcvd] id 2 len 28

6w6d: BR0:2 LCP: MRRU 1500 (0x110405DC)

6w6d: BR0:2 LCP: EndpointDisc 3 0100.a2f8.e4a9 (0x1309030100A2F8E4A9)

6w6d: BR0:2 LCP: AuthProto CHAP (0x0305C22305)

6w6d: BR0:2 LCP: MagicNumber 0x67D8E24C (0x050667D8E24C)

6w6d: BR0:2 LCP: State is Open

2 REPLIES
Bronze

Re: Cisco 1720 ISDN BRI to Bay ARN router: chap problem

Hi, I don't see anything wrong here, but you need to add "debug ppp authentication" to the debugging that you are already doing, and post the results.

Mark

Cisco Employee

Re: Cisco 1720 ISDN BRI to Bay ARN router: chap problem

The debug you have posted may not be full. But as you can see from the PPP negotiatioin log that bay router wants to do CHAP with cisco router. But does the cisco router configured for that too? We need to see the running config from the cisco router as well. So post the config with the debug for following for a call to get the clear idea. Also capture the debug till isdn connection disconnects.

debug ppp negotiation

debug ppp authentication

debug dialer

debug isnd q931

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