10-08-2008 11:59 AM - edited 03-03-2019 11:50 PM
I have configured the below configuration in Cisco 1821 router
interface ATM0/0/0
description : ADSL Link to ISP
no ip address
no ip mroute-cache
no atm ilmi-keepalive
dsl operating-mode auto
pvc 8/35 ----------------- ( i got this information from ISP )
encapsulation aal5mux ppp dialer
pppoe-client dial-pool-number 1
interface Dialer1
ip address negotiated
ip mtu 1492
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication pap chap callin
ppp chap hostname fti/bt7u2aw
ppp chap password 0 hp6q64c
ppp pap sent-username fti/bt7u2aw password 0 hp6q64c
end
But the internet link is not coming up
ATM0/0/0 is up, line protocol is up
Hardware is DSLSAR (with Alcatel ADSL Module)
Description: : ADSL Link to ISP
MTU 4470 bytes, sub MTU 4470, BW 320 Kbit, DLY 1600 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ATM, loopback not set
Encapsulation(s): AAL5 AAL2, PVC mode
23 maximum active VCs, 256 VCs per VP, 1 current VCCs
VC Auto Creation Disabled.
VC idle disconnect time: 300 seconds
Last input never, output 00:36:00, output hang never
Last clearing of "show interface" counters 00:20:29
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: Per VC Queueing
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
There is no packet in and Out
please any one help ,me
Solved! Go to Solution.
10-08-2008 01:09 PM
Hello Thiru,
it is an authentication issue not an encapsulation problem, they probably have auto-sense for detecting PPPoA and PPPoEoA.
Contact your provider support team for checking authentication data you have to use
Hope to help
Giuseppe
10-08-2008 12:41 PM
Hello Thiru,
your config is actually a PPPoE over ATM and not PPP over ATM
to troubleshoot
terminal monitor
debug ppp negotiation
debug ppp authentication
int atm0/0/0
shut
no shut
collect the output and post it
PPP over ATM example:
interface ATM0/0
no ip address
no ip mroute-cache
no atm ilmi-keepalive
dsl operating-mode auto
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 2
!
interface Dialer2
ip address negotiated
ip mtu 1492
ip virtual-reassembly
encapsulation ppp
dialer pool 2
dialer-group 1
no cdp enable
ppp authentication pap chap callin
ppp chap hostname fti/bt7u2aw
ppp chap password 0 hp6q64c
ppp pap sent-username fti/bt7u2aw password 0 hp6q64c
end
Hope to help
Giuseppe
10-08-2008 12:52 PM
Oct 8 20:41:38.910: Vi3 LCP: Timeout: State Listen
Oct 8 20:41:38.910: Vi3 PPP: No remote authentication for call-out
Oct 8 20:41:38.910: Vi3 LCP: O CONFREQ [Listen] id 62 len 10
Oct 8 20:41:38.910: Vi3 LCP: MagicNumber 0x1ECC4D32 (0x05061ECC4D32)
Oct 8 20:41:40.926: Vi3 LCP: Timeout: State REQsent
Oct 8 20:41:40.926: Vi3 LCP: O CONFREQ [REQsent] id 63 len 10
Oct 8 20:41:40.926: Vi3 LCP: MagicNumber 0x1ECC4D32 (0x05061ECC4D32)
Oct 8 20:42:29.086: Vi3 PPP: Authorization required
Oct 8 20:42:29.086: Vi3 PPP: No remote authentication for call-out
Oct 8 20:42:31.130: Vi3 PPP: No authorization without authentication
Oct 8 20:42:31.134: Vi3 CHAP: I CHALLENGE id 253 len 29 from "BSLYO153"
Oct 8 20:42:31.134: Vi3 CHAP: Using hostname from interface CHAP
Oct 8 20:42:31.134: Vi3 CHAP: Using password from interface CHAP
Oct 8 20:42:31.134: Vi3 CHAP: O RESPONSE id 253 len 32 from "fti/bt7u2aw"
Oct 8 20:42:31.342: Vi3 CHAP: I FAILURE id 253 len 21 msg is "permission denie
"
Oct 8 20:42:35.358: Vi3 PPP: Authorization required
Oct 8 20:42:35.358: Vi3 PPP: No remote authentication for call-out
Oct 8 20:43:25.534: Vi3 PPP: Authorization required
Oct 8 20:43:25.534: Vi3 PPP: No remote authentication for call-out
Oct 8 20:44:15.710: Vi3 PPP: Authorization required
Oct 8 20:44:15.710: Vi3 PPP: No remote authentication for call-out
10-08-2008 01:02 PM
Hello Thiru,
from your output we can see that PPP negotiation fails during authentication
the remote router "BSLYO153" sends a CHAP challenge
Oct 8 20:42:31.134: Vi3 CHAP: I CHALLENGE id 253 len 29 from "BSLYO153"
your router answers
Oct 8 20:42:31.134: Vi3 CHAP: O RESPONSE id 253 len 32 from "fti/bt7u2aw"
but the answer is not liked by remote
Oct 8 20:42:31.342: Vi3 CHAP: I FAILURE id 253 len 21 msg is "permission denie
"
contact your provider and check authentication data
However, ATM encapsulation is correct
Hope to help
Giuseppe
10-08-2008 01:02 PM
HI Thanks for you response , I have configured the same which you gave . but still i am having the same problem.
Out put
*Oct 8 21:08:08.894: Vi3 LCP: Timeout: State ACKsent
*Oct 8 21:08:08.894: Vi3 LCP: O CONFREQ [ACKsent] id 42 len 10
*Oct 8 21:08:08.894: Vi3 LCP: MagicNumber 0x1EE488F4 (0x05061EE488F4)
*Oct 8 21:08:08.926: Vi3 LCP: I CONFACK [ACKsent] id 42 len 10
*Oct 8 21:08:08.926: Vi3 LCP: MagicNumber 0x1EE488F4 (0x05061EE488F4)
*Oct 8 21:08:08.926: Vi3 LCP: State is Open
*Oct 8 21:08:08.926: Vi3 PPP: No authorization without authentication
*Oct 8 21:08:08.926: Vi3 PPP: Phase is AUTHENTICATING, by the peer
*Oct 8 21:08:08.926: Vi3 CHAP: I CHALLENGE id 184 len 29 from "BSLYO153"
*Oct 8 21:08:08.930: Vi3 CHAP: Using hostname from interface CHAP
*Oct 8 21:08:08.930: Vi3 CHAP: Using password from interface CHAP
*Oct 8 21:08:08.930: Vi3 CHAP: O RESPONSE id 184 len 32 from "fti/bt7u2aw"
*Oct 8 21:08:12.942: Vi3 CHAP: I CHALLENGE id 185 len 29 from "BSLYO153"
*Oct 8 21:08:12.942: Vi3 CHAP: Using hostname from interface CHAP
*Oct 8 21:08:12.942: Vi3 CHAP: Using password from interface CHAP
*Oct 8 21:08:12.942: Vi3 CHAP: O RESPONSE id 185 len 32 from "fti/bt7u2aw"
*Oct 8 21:08:17.046: Vi3 CHAP: I CHALLENGE id 186 len 29 from "BSLYO153"
*Oct 8 21:08:17.050: Vi3 CHAP: Using hostname from interface CHAP
*Oct 8 21:08:17.050: Vi3 CHAP: Using password from interface CHAP
*Oct 8 21:08:17.050: Vi3 CHAP: O RESPONSE id 186 len 32 from "fti/bt7u2aw"
*Oct 8 21:08:17.206: Vi3 CHAP: I FAILURE id 186 len 21 msg is "permission deni
d"
*Oct 8 21:08:17.210: Vi3 LCP: I TERMREQ [Open] id 86 len 4
*Oct 8 21:08:17.210: Vi3 LCP: O TERMACK [Open] id 86 len 4
*Oct 8 21:08:17.210: Vi3 PPP: Sending Acct Event[Down] id[2EE]
*Oct 8 21:08:17.210: Vi3 PPP: Phase is TERMINATING
*Oct 8 21:08:19.198: Vi3 LCP: Timeout: State TERMsent
*Oct 8 21:08:19.198: Vi3 LCP: State is Closed
*Oct 8 21:08:19.198: Vi3 PPP: Phase is DOWN
*Oct 8 21:08:19.198: Vi3 PPP: Phase is ESTABLISHING, Passive Open
*Oct 8 21:08:19.198: Vi3 LCP: State is Listen
*Oct 8 21:08:21.214: Vi3 LCP: Timeout: State Listen
*Oct 8 21:08:21.214: Vi3 PPP: Authorization required
*Oct 8 21:08:21.214: Vi3 PPP: No remote authentication for call-out
*Oct 8 21:08:21.214: Vi3 LCP: O CONFREQ [Listen] id 43 len 10
*Oct 8 21:08:21.214: Vi3 LCP: MagicNumber 0x1EE4C0F6 (0x05061EE4C0F6)
*Oct 8 21:08:23.230: Vi3 LCP: Timeout: State REQsent
*Oct 8 21:08:23.230: Vi3 LCP: O CONFREQ [REQsent] id 44 len 10
*Oct 8 21:08:23.230: Vi3 LCP: MagicNumber 0x1EE4C0F6 (0x05061EE4C0F6)
*Oct 8 21:08:25.246: Vi3 LCP: Timeout: State REQsent
*Oct 8 21:08:25.246: Vi3 LCP: O CONFREQ [REQsent] id 45 len 10
*Oct 8 21:08:25.246: Vi3 LCP: MagicNumber 0x1EE4C0F6 (0x05061EE4C0F6)
*Oct 8 21:08:27.262: Vi3 LCP: Timeout: State REQsent
*Oct 8 21:08:27.262: Vi3 LCP: O CONFREQ [REQsent] id 46 len 10
*Oct 8 21:08:27.262: Vi3 LCP: MagicNumber 0x1EE4C0F6 (0x05061EE4C0F6)
*Oct 8 21:08:29.278: Vi3 LCP: Timeout: State REQsent
*Oct 8 21:08:29.278: Vi3 LCP: O CONFREQ [REQsent] id 47 len 10
*Oct 8 21:08:29.278: Vi3 LCP: MagicNumber 0x1EE4C0F6 (0x05061EE4C0F6)
*Oct 8 21:08:31.294: Vi3 LCP: Timeout: State REQsent
*Oct 8 21:08:31.294: Vi3 LCP: O CONFREQ [REQsent] id 48 len 10
*Oct 8 21:08:31.294: Vi3 LCP: MagicNumber 0x1EE4C0F6 (0x05061EE4C0F6)
*Oct 8 21:08:33.310: Vi3 LCP: Timeout: State REQsent
*Oct 8 21:08:33.310: Vi3 LCP: O CONFREQ [REQsent] id 49 len 10
*Oct 8 21:08:33.310: Vi3 LCP: MagicNumber 0x1EE4C0F6 (0x05061EE4C0F6)
*Oct 8 21:08:35.326: Vi3 LCP: Timeout: State REQsent
*Oct 8 21:08:35.326: Vi3 LCP: O CONFREQ [REQsent] id 50 len 10
*Oct 8 21:08:35.326: Vi3 LCP: MagicNumber 0x1EE4C0F6 (0x05061EE4C0F6)
*Oct 8 21:08:37.342: Vi3 LCP: Timeout: State REQsent
*Oct 8 21:08:37.342: Vi3 LCP: O CONFREQ [REQsent] id 51 len 10
10-08-2008 01:09 PM
Hello Thiru,
it is an authentication issue not an encapsulation problem, they probably have auto-sense for detecting PPPoA and PPPoEoA.
Contact your provider support team for checking authentication data you have to use
Hope to help
Giuseppe
10-08-2008 06:55 PM
I ll get in touch with ISP and let you know
10-09-2008 10:14 AM
Hi.
I request the ISP to reset the our Account password and then I have configured the same in dialer interface now the internet is up and running fine . thanks a lot
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