Hi group, I have r2 which is configured to request callback from r5. The problem is that r2 does not wait for r5 to callback and will repeat the calling r5 and request callback. However r5 will eventually succeed and callback r2. My question is how can you prevent r2 from repeating the call to r5? I have pasted below the configuration for both routers and the output of "debug isdn q931" and "debug ppp authentication" on r2.
r2#show run ! version 11.3 ! hostname r2 ! username r5 password 7 13061E010803 ip subnet-zero no ip domain-lookup isdn switch-type basic-ni1 ! ! interface BRI0 no ip address no ip directed-broadcast encapsulation ppp dialer pool-member 1 isdn spid1 0835866101 isdn spid2 0835866301 ppp callback request ! interface Dialer1 ip address 10.10.10.1 255.255.255.0 no ip directed-broadcast encapsulation ppp dialer remote-name r5 dialer enable-timeout 1000 dialer string 8358662 dialer hold-queue 100 timeout 30 dialer pool 1 dialer-group 1 ntp broadcast pulse-time 0 ppp authentication chap ! ! map-class dialer eng access-list 1 deny any access-list 100 permit tcp any any eq telnet access-list 100 permit icmp any any dialer-list 1 protocol ip list 100 ! line con 0 exec-timeout 0 0 logging synchronous transport input none line aux 0 line vty 0 4 exec-timeout 0 0 password 7 06101B38 login telnet break-on-ip telnet ip-on-break ! ntp clock-period 17179853 end r2# ================= r5#show run version 12.2 ! hostname r5 username r2 password 7 045802150C2E no ip domain-lookup ! isdn switch-type basic-ni ! ! ! ! ! interface BRI0 ip address 10.10.10.2 255.255.255.0 encapsulation ppp dialer callback-secure dialer map ip 10.10.10.1 name r2 class eng broadcast 8358661 dialer-group 1 isdn switch-type basic-ni isdn spid1 0835866201 isdn spid2 0835866401 cdapi buffers regular 0 cdapi buffers raw 0 cdapi buffers large 0 ppp callback accept ppp authentication chap ppp chap hostname r5 ! ! map-class dialer eng dialer callback-server username access-list 100 permit tcp any any eq telnet access-list 100 permit icmp any any dialer-list 1 protocol ip list 100 ! ! line con 0 exec-timeout 0 0 logging synchronous transport input none line aux 0 line vty 0 4 password 7 045802150C2E login autocommand access-enable host timeout 5 ! ntp clock-period 17179628 ntp master 4 ntp peer 10.10.110.16 end r5# ============== r2#show debug ISDN: ISDN Q931 packets debugging is on r2#debu ppp authen PPP authentication debugging is on r2# r2#ping 10.10.10.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.10.10.2, timeout is 2 seconds: ..... Success rate is 0 percent (0/5) r2# .Mar 2 11:01:03.477: ISDN BR0: TX -> SETUP pd = 8 callref = 0x04 .Mar 2 11:01:03.481: Bearer Capability i = 0x8890 .Mar 2 11:01:03.485: Channel ID i = 0x83 .Mar 2 11:01:03.485: Keypad Facility i = '8358662' .Mar 2 11:01:03.529: ISDN BR0: RX CONNECT_ACK pd = 8 callref = 0x04 .Mar 2 11:01:05.797: BR0:1 PPP: Phase is AUTHENTICATING, by the peer .Mar 2 11:01:07.653: BR0:1 PPP: Phase is AUTHENTICATING, by the peer .Mar 2 11:01:07.673: BR0:1 CHAP: I CHALLENGE id 195 len 23 from "r5" .Mar 2 11:01:07.681: BR0:1 CHAP: O RESPONSE id 195 len 23 from "r2" .Mar 2 11:01:07.705: BR0:1 CHAP: I SUCCESS id 195 len 4 .Mar 2 11:01:07.769: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to up .Mar 2 11:01:07.777: ISDN BR0: RX RELEASE pd = 8 callref = 0x04 .Mar 2 11:01:07.857: ISDN BR0: RX SETUP pd = 8 callref = 0x05 .Mar 2 11:01:09.481: Bearer Capability i = 0x8890 .Mar 2 11:01:09.481: Channel ID i = 0x83 .Mar 2 11:01:09.485: Keypad Facility i = '8358662' .Mar 2 11:01:09.525: ISDN BR0: RX CONNECT_ACK pd = 8 callref = 0x05 .Mar 2 11:01:11.809: BR0:1 PPP: Phase is AUTHENTICATING, by the peer .Mar 2 11:01:13.657: BR0:1 PPP: Phase is AUTHENTICATING, by the peer .Mar 2 11:01:13.681: BR0:1 CHAP: I CHALLENGE id 196 len 23 from "r5" .Mar 2 11:01:13.689: BR0:1 CHAP: O RESPONSE id 196 len 23 from "r2" .Mar 2 11:01:13.709: BR0:1 CHAP: I SUCCESS id 196 len 4 .Mar 2 11:01:13.773: ISDN BR0: RX RELEASE pd = 8 callref = 0x05 .Mar 2 11:01:13.853: ISDN BR0: RX CONNECT pd = 8 callref = 0x8E .Mar 2 11:01:22.853: Channel ID i = 0x89 .Mar 2 11:01:22.961: ISDN BR0: RX <- CONNECT_ACK pd = 8 callref = 0x0E r2# .Mar 2 11:01:26.889: BR0:1 PPP: Phase is AUTHENTICATING, by the peer .Mar 2 11:01:26.901: BR0:1 CHAP: I CHALLENGE id 197 len 23 from "r5" .Mar 2 11:01:26.909: BR0:1 CHAP: O RESPONSE id 197 len 23 from "r2" .Mar 2 11:01:26.933: BR0:1 CHAP: I SUCCESS id 197 len 4 r2# .Mar 2 11:01:27.865: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to up r2# .Mar 2 11:01:28.837: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 8358662 8358662 r2# Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=59444&t=59444 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
