06-01-2010 07:36 AM - edited 03-04-2019 08:39 AM
I have an 877 router that will not connect to my ISP. I've tried the troubleshooting docs, when I run a PPP debug, I get Vi2 CHAP: O RESPONSE id 1 len 34 from <my isp username>"
Vi2 CHAP: I FAILURE id 1 len 42 msg is "CHAP authentication failure, unit 2965"
the username and password are for certain correct, and the line is ok, as when I use another (much cheaper) router, it works fine. I've wiped my router and re-done the config from scratch, with same result. I'm running the latest IOS. Any ideas what other troubleshooting can be done?
06-01-2010 11:44 AM
Hello Alan,
post a filtered version of your current configuration and if you like the output of
debug ppp negotiation
debug ppp authentication
Vi2 means virtual-access 2, you could use a dialer interface instead so looking at your config may help
Hope to help
Giuseppe
06-02-2010 06:22 AM
Hi,
debug ppp neg is as follows:
*Mar 1 03:33:39.090: Vi2 LCP: State is Closed
*Mar 1 03:33:39.090: Vi2 PPP: Phase is DOWN
*Mar 1 03:33:39.090: Vi2 PPP: Phase is ESTABLISHING, Passive Open
*Mar 1 03:33:39.090: Vi2 LCP: State is Listenunde
*Mar 1 03:33:40.402: Vi2 PPP: LCP not open, discarding UNKNOWN(0xAAAA) packet
*Mar 1 03:33:41.107: Vi2 LCP: Timeout: State Listen
*Mar 1 03:33:41.107: Vi2 PPP: No remote authentication for call-out
*Mar 1 03:33:41.107: Vi2 LCP: O CONFREQ [Listen] id 225 len 10
*Mar 1 03:33:41.107: Vi2 LCP: MagicNumber 0x23C69477 (0x050623C69477)
*Mar 1 03:33:41.579: Vi2 LCP: I CONFREQ [REQsent] id 139 len 19
*Mar 1 03:33:41.579: Vi2 LCP: MRU 1500 (0x010405DC)
*Mar 1 03:33:41.579: Vi2 LCP: AuthProto CHAP (0x0305C22305)
*Mar 1 03:33:41.579: Vi2 LCP: MagicNumber 0x55E3EF63 (0x050655E3EF63)
*Mar 1 03:33:41.583: Vi2 LCP: O CONFACK [REQsent] id 139 len 19
*Mar 1 03:33:41.583: Vi2 LCP: MRU 1500 (0x010405DC)
*Mar 1 03:33:41.583: Vi2 LCP: AuthProto CHAP (0x0305C22305)
*Mar 1 03:33:41.583: Vi2 LCP: MagicNumber 0x55E3EF63 (0x050655E3EF63)
*Mar 1 03:33:41.583: Vi2 LCP: I CONFACK [ACKsent] id 225 len 10
*Mar 1 03:33:41.583: Vi2 LCP: MagicNumber 0x23C69477 (0x050623C69477)
*Mar 1 03:33:41.583: Vi2 LCP: State is Open
*Mar 1 03:33:41.583: Vi2 PPP: Phase is AUTHENTICATING, by the peer
*Mar 1 03:33:41.595: Vi2 CHAP: I CHALLENGE id 1 len 36 from "bras-red7.l-wat"
*Mar 1 03:33:41.595: Vi2 CHAP: Using hostname from interface CHAP
*Mar 1 03:33:41.595: Vi2 CHAP: Using password from interface CHAP
*Mar 1 03:33:41.595: Vi2 CHAP: O RESPONSE id 1 len 34 from "XXXXXXXXX"
*Mar 1 03:33:41.635: Vi2 CHAP: I FAILURE id 1 len 42 msg is "CHAP authenticatio n failure, unit 1822"
*Mar 1 03:33:41.635: Vi2 LCP: I TERMREQ [Open] id 140 len 4
*Mar 1 03:33:41.635: Vi2 LCP: O TERMACK [Open] id 140 len 4all
*Mar 1 03:33:41.635: Vi2 PPP: Sending Acct Event[Down] id[3B1]
*Mar 1 03:33:41.635: Vi2 PPP: Phase is TERMINATING
*Mar 1 03:33:42.075: Vi2 LCP: I TERMREQ [TERMsent] id 1 len 4
*Mar 1 03:33:42.075: Vi2 LCP: O TERMACK [TERMsent] id 1 len 4
All possible debugging has been turned off
MSV-877#
*Mar 1 03:33:43.631: Vi2 LCP: Timeout: State TERMsent
*Mar 1 03:33:43.631: Vi2 LCP: State is Closed
Running config:
interface ATM0
no ip address
no atm ilmi-keepalive
!
interface ATM0.1 point-to-point
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Vlan1
ip address 10.0.10.252 255.255.255.0
ip nat inside
ip virtual-reassembly
!
interface Dialer0
ip address xx.xx.xx.3 255.255.255.240
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap callin
ppp chap hostname ***********
ppp chap password 0 ************
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer0
ip http server
ip http secure-server
!
ip nat inside source list 1 interface Dialer0 overload
!
access-list 1 remark INSIDE_IF=Vlan1
access-list 1 remark SDM_ACL Category=2
access-list 1 permit 10.0.10.0 0.0.0.255
dialer-list 1 protocol ip permit
!
!
!
06-09-2010 09:56 AM
*Mar 1 03:33:41.635: Vi2 CHAP: I FAILURE id 1 len 42 msg is "CHAP authentication failure, unit 1822"
Are there special characters in the credentials ?
06-08-2010 09:57 AM
I don't understand why it would say virtual interface. I configured it via SDM, I presume it would apply it to the actual interface?
06-08-2010 10:20 AM
Hello Alan,
the configuration looks like correct I've checked on one of my device a virtual-access interface is derived from the dialer interface
What IOS image is running on the device?
post sh ver | inc image
Hope to help
Giuseppe
06-09-2010 09:45 AM
System image file is "flash:c870-advsecurityk9-mz.124-24.T3.bin"
Cheers
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