ATM0 is initializing, line protocol is down ???

[yemaya]

Hi Guys.

Some here can tell me what this does mean, i just got a 877 router for a dsl and when i do:

R877#sh int atm0

got this:


ATM0 is initializing, line protocol is down
Hardware is MPC ATMSAR (with Alcatel ADSL Module)
MTU 4470 bytes, sub MTU 4470, BW 4608 Kbit, DLY 80 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ATM, loopback not set
Encapsulation(s): AAL5 AAL2, PVC mode
10 maximum active VCs, 1024 VCs per VP, 0 current VCCs
VC Auto Creation Disabled.
VC idle disconnect time: 300 seconds
Last input never, output never, output hang never
Last clearing of "show interface" counters never
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, 0 interface resets
0 output buffer failures, 0 output buffers swapped out

Any ideas what my problem could be?

Thanks,

 

[burtsbees]

Can you post a show run? Also, look at sh int di0 or di1, whichever is configured for the dialer interface---the interface will be bound to a Virtual-Access interface when it's connected. It looks like the MTU for the ATM interface is very high...should be 1500, and I don't know if it makes a difference on the ATM interface. For DSL, normally you want the MTU on the dialer interface to be adjusted to 1492 (ip tcp adjust-mss 1452). One thing also, which is what I would do next, is debug ppp authentication and debug ppp negotiation---it seems like LCP/NCP are not open, like authentication is not working. Hope this helps.

Burt

 

[yemaya]

Hi Burt,

This is my configuration:

R877#sh run
Building configuration...

Current configuration : 2029 bytes
!
version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
!
hostname R877
!
boot-start-marker
boot-end-marker
!
logging buffered 52100
no logging console
no logging monitor
enable secret 5 XXXXXXXXXXXXXX
!
no aaa new-model
clock timezone EST -5
clock summer-time EST recurring 1 Sun Mar 2:00 2 Sun Nov 2:00
no ip source-route
ip cef
!
!
ip tcp synwait-time 10
no ip bootp server
no ip domain lookup
!
multilink bundle-name authenticated
vpdn enable
!
vpdn-group pppoe
 request-dialin
  protocol pppoe 
!
!
interface ATM0
 no ip address
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip route-cache flow
 no atm ilmi-keepalive
 dsl operating-mode auto 
!
interface ATM0.1 point-to-point
 no snmp trap link-status
 pvc 0/35 
  pppoe-client dial-pool-number 1
 !
!
interface FastEthernet0
!         
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Vlan1
 description TO PIX
 ip address xx.xx.xx.225 255.255.255.248
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip route-cache flow
 ip tcp adjust-mss 1452
!
interface Dialer1
 ip unnumbered Vlan1
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip mtu 1492
 encapsulation ppp
 ip route-cache flow
 dialer pool 1
 no cdp enable
 ppp loopback ignore
 ppp authentication chap callin
 ppp chap hostname XXXXXXXXXXXXXX
 ppp chap password XXXXXXXXXXXXXX
 ppp ipcp dns request
!
ip route 0.0.0.0 0.0.0.0 xx.xx.xx.224
!
!
no ip http server
no ip http secure-server
!
no cdp run
!
!
control-plane
!
!         
line con 0
 exec-timeout 0 0
 password 7 XXXXXXXXXXXXXX
 logging synchronous
 login
 no modem enable
line aux 0
line vty 0 4
 exec-timeout 0 5
 password 7 XXXXXXXXXXXXXX
 logging synchronous
 login
!
scheduler max-task-time 5000
end

R877#

 

[plshlpme]

possibly you just missing the
"encapsulation aal5mux ppp dialer"

on your atm subif.

here is a link from cisco

http://www.cisco.com/en/US/tech/tk175/tk15/technologies_configuration_example09186a008071a60e.shtml

 

[burtsbees]

Well, you need
dialer-list 1 protocol ip permit
NAT configuration
and I would also do
ppp authentication pap chap callin
ppp pap sent-username xxxxxxxxxx password xxxxxxxxxxxx
If your ISP makes you authenticate via RADIUS server rather than TACACS+, then the ppp will be negotiated using PAP, I believe. Also, plshlpme, doesn't the dsl operating-mode auto statement under the atm interface set the encapsulation for the ATM interface? One more thing---I've never used the ip unnumbered config and mapped the IP to a VLAN, especially with DSL---I wonder if you need the ip address negotiated statement under the dialer interface, and NAT between VLAN 1 and the dialer...

Burt

 

[plshlpme]

hey Burt,
i think the dsl operating mode is more for the dsl standard being used and not to do with the atm encapsulation...

http://www.cisco.com/en/US/products...ts_feature_guide09186a008017c4a2.html#1028192

i would worry about bringing up the atm pvc before (layer 1 and 2) for now and then move onto the vlan configuraton and ip unnumbered..

the reason i suspect the encapsualtion is off is because the pvc hasnt' come up.. so if layer 1 and 2 aren't working then there is no point on even thinking about the ip configuration yet.

 

[burtsbees]

True, but for the atm interface, he has the same config as I do---under my atm interface config, I do not specify the encaps either, in both the atm0 or atm0.1 subinterface...he does not have a dialer pool configured, which is why I figure it can't come up---the atm interface points to pool 1, as does the dialer interface. Right? Or am I stoned?lol

Burt

 

[yemaya]

Hi Guys;

plshlpme (TechnicalUser)  
possibly you just missing the "encapsulation aal5mux ppp dialer"

on your atm subif.

here is a link from cisco

[URL unfurl="true"]http://www.cisco.com/en/US/tech/tk175/tk15/technologies_configuration_example09186a008071a60e.shtml[/URL]

I was reading and this is for PPPoA, and i need PPPoE.

burtsbees (Programmer)  
Well, you need dialer-list 1 protocol ip permit
NAT configuration
and I would also do
ppp authentication pap chap callin
ppp pap sent-username xxxxxxxxxx password xxxxxxxxxxxx
If your ISP makes you authenticate via RADIUS server rather than TACACS+, then the ppp will be negotiated using PAP, I believe. Also, plshlpme, doesn't the dsl operating-mode auto statement under the atm interface set the encapsulation for the ATM interface? One more thing---I've never used the ip unnumbered config and mapped the IP to a VLAN, especially with DSL---I wonder if you need the ip address negotiated statement under the dialer interface, and NAT between VLAN 1 and the dialer...

Burt

I added the dialer-list 1 protocol ip permit and ppp authentication pap chap callin
ppp pap sent-username xxxxxxxxxx password xxxxxxxxxxxx, i just used CHAP because i called my ISP and they told me to used CHAP but anyway i added both just in case, i used ip unnumbered because i just want my 877 acting like a modem, i'll do NAT in my 506 firewall and no in the 877 router.

plshlpme (TechnicalUser)  
hey Burt,
i think the dsl operating mode is more for the dsl standard being used and not to do with the atm encapsulation...

[URL unfurl="true"]http://www.cisco.com/en/US/products/sw/iosswrel/ps5012/products_feature_guide09186a008017c4a2.html#1028192[/URL]

i would worry about bringing up the atm pvc before (layer 1 and 2) for now and then move onto the vlan configuraton and ip unnumbered..

the reason i suspect the encapsualtion is off is because the pvc hasnt' come up.. so if layer 1 and 2 aren't working then there is no point on even thinking about the ip configuration yet.

agree totally with your statement, i think my problem is layer 1, i having problems with my phone jack wiring, all the jack boxes are loose, the phone is working good but i'm not sure if that have something to do with the DSL, i was searching in the internet for some pic in how the wires have to be connected but haven't found anything yet, i can call my telco company but they for sure take more than a week to come, if i can do it my self i'll do it.

If anyone here have DSL and check how the cables are connected in the jack box i'll appreciate.

Also here is my update configuration in my router and still got the same problem:

R877#sh run         
Building configuration...

Current configuration : 1749 bytes
!
version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
no service password-encryption
service sequence-numbers
!
hostname R877
!
boot-start-marker
boot-end-marker
!
logging buffered 51200
no logging console
no logging monitor
enable secret 5 XXXXXXXXXX
!
no aaa new-model
clock timezone EST -5
clock summer-time EST recurring 1 Sun Mar 2:00 2 Sun Nov 2:00
no ip source-route
ip cef
!
!
!
!
no ip bootp server
no ip domain lookup
!
multilink bundle-name authenticated
vpdn enable
!
vpdn-group pppoe
 request-dialin
  protocol pppoe
!
!
interface ATM0
 no ip address
 no atm ilmi-keepalive
 dsl operating-mode auto 
!
interface ATM0.1 point-to-point
 no snmp trap link-status
 pvc 0/35 
  pppoe-client dial-pool-number 1
 !
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!         
interface Vlan1
 ip address xx.xx.xx.225 255.255.255.248
 ip tcp adjust-mss 1452
!
interface Dialer0
 ip unnumbered Vlan1
 ip mtu 1492
 encapsulation ppp
 dialer pool 1
 dialer-group 1
 ppp authentication pap chap callin
 ppp chap hostname XXXXXXXXXX
 ppp chap password 0 XXXXXXXXXX
 ppp pap sent-username XXXXXXXXXX password 0 XXXXXXXXXX
!
ip route 0.0.0.0 0.0.0.0 xx.xx.xx.224
!
!
no ip http server
no ip http secure-server
!
dialer-list 1 protocol ip permit
no cdp run
!
!
control-plane
!
!
line con 0
 exec-timeout 0 0
 password XXXXXXXXXX
 logging synchronous
 login
 no modem enable
line aux 0
line vty 0 4
 exec-timeout 0 5
 password XXXXXXXXXX
 logging synchronous
 login
!
scheduler max-task-time 5000
end
          
R877#

Thanks guys.

 

[burtsbees]

I had a similar problem once---you check where the cable comes into the switchbox on the outside from the utility (telephone) pole? I had it where the phone worked, but no dsl---the cable was broken, but barely making contact. If the phone works, then the phone jack is wired correctly---you may have a loose cable.

Burt

 

[plshlpme]

do you have a spare dsl modem you could plug into the line to see if it gets sync?
its possible that you dont have a dsl line card on your line if the telco forgot to do it...

if the modem syncs though you know your jack and the line are good and it is a router issue at that time.

 

[yemaya]

Hi Guys,

My ISP sent a guy to fix the problem and now i got:

ATM0 is up, line protocol is up

Thanks guys, now i have to deal with the PIX.

Thanks.