[c-nsp] Problem connecting DSL with 12.3(11)T3

Thu Mar 17 10:42:26 EST 2005

On Mar 17, 2005, at 10:13 AM, Josh Duffek wrote:

> Stuff that looks weird to me:
>> interface Ethernet0
>>   half-duplex
> Really?

well, I am not getting any interface level errors.  This is connected 
to a netopia DSL/Ethernet bridge.  Its possible it does FD, but half 
was safe and working.

>
> Also:
>> nco#show ip int dialer1
>> Dialer1 is up, line protocol is up
> Shouldn't it be up/up spoofing?  This doesn't really matter, but I was
> just curious if the code is different now.
>

Yes, well sometimes it is up and spoofing, when I did these show 
commands, during its "failed" state, above is what it was showing.

> So here is the deal:
>> *Mar  8 01:04:02.975: Vi1 LCP: O CONFREQ [REQsent] id 2 len 10
>> *Mar  8 01:04:02.975: Vi1 LCP:    MagicNumber 0x04F29287
>> (0x050604F29287)
>> *Mar  8 01:04:04.991: Vi1 LCP: TIMEout: State REQsent
>
> You send an (O)utgoing CONFREQ and it never gets ACKd by the PPPpeer.
> So something is getting "stuck" after the connection drops.
>
> Can you also turn on "debug ppp packet"?  Wonder if you are getting
> encap failed or something.  I might shutdown the fa0 interface, and do 
> a
> debug ip packet as well to watch the packets going out the eth0
> interface.  Also, look at "sh int" and see if anything is weird on the
> lan interfaces.
>

Those are some good ideas.  I will try to do more debugs, the thing is, 
my pppoe configs are pretty golden since thats basically what every 
other dsl customer runs, so I tend to question the IOS.  Normally I 
wouldn't be running 12.3T code, but I needed some features in 
it.........

> Kinda sounds like a bug but not enough info to say for sure.
>
> josh duffek    network engineer
> consultantjd16 at ridemetro.org
>
>> -----Original Message-----
>> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
>> bounces at puck.nether.net] On Behalf Of Brian Feeny
>> Sent: Wednesday, March 16, 2005 7:10 PM
>> To: cisco-nsp at puck.nether.net
>> Subject: [c-nsp] Problem connecting DSL with 12.3(11)T3
>>
>>
>>
>> I am having problems with a Bellsouth DSL config under 12.3(11)T3, I
>> believe it may be an IOS issue.  When I reload the router it connects,
>> I get my IP, but then it shortly disconnects, and it will not
>> reconnect.  I flap both the e0 and dialer1 interfaces, but nothing.
> No
>> matter what I try to clear using "clear pppoe", this always remains:
>>
>> nco#show pppoe session
>>       1 client session
>>
>> Uniq ID  PPPoE  RemMAC          Port                    VT  VA
>> State
>>             SID  LocMAC                                      VA-st
>>      N/A   4007  0003.4272.c002  Et0                    Di1  Vi1
>> N/A
>>                  0004.dc0c.ead9                              DOWN
>>
>>
>> Yet Dialer1 no longer shows an IP address set:
>>
>> nco#show ip int dialer1
>> Dialer1 is up, line protocol is up
>>    Internet address will be negotiated using IPCP
>>    Broadcast address is 255.255.255.255
>>    MTU is 1492 bytes
>>    Helper address is not set
>>    Directed broadcast forwarding is disabled
>>    Outgoing access list is not set
>>    Inbound  access list is not set
>>
>>
>> debug ppp auth and neg just repeatedly shows:
>>
>> *Mar  8 01:03:36.831: Vi1 LCP: TIMEout: State REQsent
>> *Mar  8 01:03:36.831: Vi1 LCP: O CONFREQ [REQsent] id 10 len 10
>> *Mar  8 01:03:36.831: Vi1 LCP:    MagicNumber 0x04F1ED6A
>> (0x050604F1ED6A)
>> *Mar  8 01:03:38.847: Vi1 LCP: TIMEout: State REQsent
>> *Mar  8 01:03:38.847: %DIALER-6-UNBIND: Interface Vi1 unbound from
>> profile Di1
>> *Mar  8 01:03:38.851: Vi1 LCP: State is Listen
>> *Mar  8 01:03:38.855: %LINK-3-UPDOWN: Interface Virtual-Access1,
>> changed state to down
>> *Mar  8 01:04:00.967: %DIALER-6-BIND: Interface Vi1 bound to profile
> Di1
>> *Mar  8 01:04:00.967: Vi1 PPP: Phase is DOWN, Setup
>> *Mar  8 01:04:00.967: Vi1 PPP: Using dialer call direction
>> *Mar  8 01:04:00.967: Vi1 PPP: Treating connection as a callout
>> *Mar  8 01:04:00.971: Vi1 PPP: Phase is ESTABLISHING, Active Open
>> *Mar  8 01:04:00.971: Vi1 PPP: Authorization required
>> *Mar  8 01:04:00.971: Vi1 PPP: No remote authentication for call-out
>> *Mar  8 01:04:00.971: Vi1 LCP: O CONFREQ [Closed] id 1 len 10
>> *Mar  8 01:04:00.971: Vi1 LCP:    MagicNumber 0x04F29287
>> (0x050604F29287)
>> *Mar  8 01:04:00.975: %LINK-3-UPDOWN: Interface Virtual-Access1,
>> changed state to up
>> *Mar  8 01:04:02.975: Vi1 LCP: TIMEout: State REQsent
>> *Mar  8 01:04:02.975: Vi1 LCP: O CONFREQ [REQsent] id 2 len 10
>> *Mar  8 01:04:02.975: Vi1 LCP:    MagicNumber 0x04F29287
>> (0x050604F29287)
>> *Mar  8 01:04:04.991: Vi1 LCP: TIMEout: State REQsent
>> *Mar  8 01:04:04.991: Vi1 LCP: O CONFREQ [REQsent] id 3 len 10
>> *Mar  8 01:04:04.991: Vi1 LCP:    MagicNumber 0x04F29287
>> (0x050604F29287)
>>
>>
>> Its strange that I can reload the router, and it will come up, but
> once
>> the connection has dropped, I have not been successful in revising it.
>> Anyone have luck with 12.3(11)T3 and DSL/PPPoE?  See anything in the
>> config below that may be questionable?
>>
>>
>>
>>
>> Building configuration...
>>
>> Current configuration : 4352 bytes
>> !
>> version 12.3
>> service timestamps debug datetime msec
>> service timestamps log datetime msec
>> service password-encryption
>> !
>> hostname nco
>> !
>> boot-start-marker
>> boot-end-marker
>> !
>> logging buffered 4096 debugging
>> enable password 7 xxxxxxxxxxxxxxxxxxxx
>> !
>> mmi polling-interval 60
>> no mmi auto-configure
>> no mmi pvc
>> mmi snmp-timeout 180
>> no aaa new-model
>> ip subnet-zero
>> !
>> !
>> ip dhcp excluded-address 10.0.2.1
>> ip dhcp excluded-address 10.0.2.1 10.0.2.99
>> !
>> ip dhcp pool NCO
>>     network 10.0.2.0 255.255.255.0
>>     default-router 10.0.2.1
>>     dns-server 65.38.1.2 65.38.1.4
>> !
>> !
>> ip cef
>> ip ips po max-events 100
>> vpdn enable
>> !
>> vpdn-group 1
>>   request-dialin
>>    protocol pppoe
>> !
>> no ftp-server write-enable
>> !
>> !
>> !
>> !
>> !
>> track 1 rtr 1 reachability
>> !
>> track 2 rtr 2 reachability
>> !
>> !
>> interface Ethernet0
>>   description DSL Connection provided by Bellsouth
>>   no ip address
>>   half-duplex
>>   pppoe enable
>>   pppoe-client dial-pool-number 1
>>   no cdp enable
>> !
>> interface FastEthernet0
>>   description NCO Lan Interface
>>   ip address 10.0.2.1 255.255.255.0
>>   ip nat inside
>>   ip virtual-reassembly
>>   speed auto
>> !
>> interface Serial0
>>   description T1 data line provided by Nuvox Communications
>>   no ip address
>>   encapsulation frame-relay IETF
>>   no fair-queue
>>   frame-relay lmi-type ansi
>> !
>> interface Serial0.1 point-to-point
>>   ip address 66.147.3.118 255.255.255.252
>>   ip nat outside
>>   ip virtual-reassembly
>>   frame-relay interface-dlci 351 IETF
>> !
>> interface Dialer1
>>   description DSL Connection provided by Bellsouth
>>   ip address negotiated
>>   ip mtu 1492
>>   ip nat outside
>>   ip virtual-reassembly
>>   encapsulation ppp
>>   ip tcp adjust-mss 1452
>>   dialer pool 1
>>   dialer idle-timeout 0
>>   dialer persistent
>>   dialer-group 1
>>   no cdp enable
>>   ppp chap hostname pyramidreal at bellsouth.net
>>   ppp chap password 7 xxxxxxxxxxxxxxxxxxx
>> !
>> router eigrp 1
>>   passive-interface FastEthernet0
>>   network 10.0.2.0 0.0.0.255
>>   no auto-summary
>>   eigrp stub connected
>> !
>> ip local policy route-map myLocalPolicy
>> ip classless
>> ip route 0.0.0.0 0.0.0.0 Serial0.1 track 1
>> ip route 0.0.0.0 0.0.0.0 Dialer1 track 2
>> no ip http server
>> no ip http secure-server
>> !
>> ip nat inside source route-map outE0 interface Dialer1 overload
>> ip nat inside source route-map outS0 interface Serial0.1 overload
>> !
>> !
>> !
>> ip access-list extended fromE0
>>   permit tcp host 65.13.253.248 eq telnet any
>> ip access-list extended fromS0
>>   permit tcp host 66.147.3.118 eq telnet any
>> ip access-list extended localLan
>>   permit ip 10.0.2.0 0.0.0.255 any
>> ip access-list extended track1
>>   permit icmp any host 66.147.3.117 echo
>> ip access-list extended track2
>>   permit icmp any host 65.38.1.2 echo
>> dialer-list 1 protocol ip permit
>> !
>> route-map outS0 permit 10
>>   match ip address localLan
>>   match interface Serial0.1
>> !
>> route-map outE0 permit 10
>>   match ip address localLan
>>   match interface Dialer1
>> !
>> route-map myLocalPolicy permit 10
>>   match ip address fromS0
>>   set ip next-hop 66.147.3.117
>> !
>> route-map myLocalPolicy permit 20
>>   match ip address fromE0
>>   set interface Dialer1
>> !
>> route-map myLocalPolicy permit 30
>>   match ip address track1
>>   set interface Null0
>>   set ip next-hop 66.147.3.117
>> !
>> route-map myLocalPolicy permit 40
>>   match ip address track2
>>   set interface Null0
>>   set ip next-hop 65.13.253.247
>> !
>> !
>> control-plane
>> !
>> rtr 1
>>   type echo protocol ipIcmpEcho 66.147.3.117
>> rtr schedule 1 life forever start-time now
>> rtr 2
>>   type echo protocol ipIcmpEcho 65.38.1.2
>> rtr schedule 2 life forever start-time now
>> !
>> line con 0
>> line aux 0
>>   password 7 xxxxxxxxxxxxxxxxx
>>   login
>>   modem InOut
>>   transport input all
>>   speed 115200
>>   flowcontrol hardware
>> line vty 0 4
>>   password 7 xxxxxxxxxxxxxxxxxx
>>   login
>> !
>> end
>>
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