09-20-2010 01:10 AM - edited 03-04-2019 09:49 AM
Hi folks,
just configuring a Cisco 1841 router with an HWIC-2SHDSL card and I cannot get it to work, it receives no packets from the ISP, it doesn't even get PADO. The client needs this up and working by Thursday so I'm trying to fix this for Wednesday latest (with your help hopefully )
The ISP have verified the link is up with their modem and they used the same cable I used connected to the 1841. When they connected their modem I connected my laptop to it and could browse the web. All setting on the Modem were the same as the one listed below.
I have attached the running config, debugs and a bunch of show commands. As well the settings from the ISP
ISP Settings;
AMCOM
Username:yyy
Password:xxx
IP Address:X.X.X.X
Encapsulation:PPPoE
Modulation:Auto
Authentication Type:CHAP
VPI & VCI:VPI: 8 VCI: 35
DNS Server:203.161.127.1, 203.153.224.42
Any help would be fantastic!
Dave
09-20-2010 01:12 AM
Sorry some other ISP settings;
2-wire
Annex B
PPPoE
2Mbps
09-20-2010 11:25 AM
Shouldn't be too difficult, have you tried running the ATM wizard in Cisco SDM? It's very easy and will generate the required terminal commands for you. You can download it at www.cisco.com/go/sdm
09-20-2010 03:40 PM
Hi Sander,
yeah I've tried SDM, unfortunatly it doesn't allow for the configuration of an SHDSL link, only PPP over ATM. It actually states in the SDM that I need to use the CLI to configure it.
thanks anyway
Dave
09-20-2010 09:01 PM
Does anyone have a configuration example of an ANNEX B 2-wire SHDSL Link with PPPoE?
09-21-2010 05:03 AM
Use the right (or the other) Modem Pair,
your sh controller output indicates there is no sdsl modem connection.
Do use Cable with just the contacts connected you will use for the connection,
the others should not be connected to anything.
After establishing the sdsl connection, we may look further into PPPoE over it.
Juergen.
09-21-2010 06:52 AM
you are consuming dialer-group 1 but there ist no
dialer-list 1 ip permit
in your config.
Since there is no interesting traffic, why should it dail-in ?
Also, you may want to have
int dialer 1
dialer idle-timeout 0
dialer persistent
and
ip tcp adjust-mss 1280
on both int dialer 1 and int fas 0/0
but no ip mtu... on int fas 0/0 .
on int di 1, chap and pap passwod should be yyy and not xxx .
your surf-nat should use fas0/0, not fas 0/1 which is shutdown.
Also on modern IOS, ip nat inside source list ... works well,
no need for those route-map's from ancient IOS .
Why are you using a 1841+WIC ?
1803 has SDSL-Modem buildin, 1 real FastEthernet plus 8 switched FastEthernet Ports,
and is normally cheaper than 1841+hwic .
When you know your fixed external IP-Adress, bind it on an interface loopback 0
and use ip unnumbered loopback 0 on the dialer interface.
I have the following for PPPoEoA on 878/1803, so controller- and atm interface name may vary:
!
controller DSL 0
mode atm
line-term cpe
line-mode 2-wire line-zero
! other pair: line-mode 2-wire line-one
dsl-mode shdsl symmetric annex B
line-rate auto
no shutdown
!
track 11 interface ATM0.1 line-protocol
!
bridge irb
!
vc-class atm gshdsl20v
vbr-nrt 2240 2240 224
oam-pvc manage
oam retry 2 3 5
!
vc-class atm gshdsl192v
vbr-nrt 1920 1920 192
oam-pvc manage
oam retry 2 3 5
!
interface ATM0
no ip address
no shutdown
no atm ilmi-keepalive
!
interface ATM0.1 point-to-point
description CPE
no shutdown
no snmp trap link-status
pvc CPE 8/35
class-vc gshdsl20v
! or class-vc gshdsl192v
oam-pvc manage
encapsulation aal5snap
pppoe max-sessions 1
pppoe-client dial-pool-number 1
!
no cdp enable
!
interface Loopback0
description WAN
ip address X.X.X.X 255.255.255.255
no shutdown
!
interface Dialer1
description DSL Dialer
ip unnumbered Loopback0
encapsulation ppp
dialer pool 1
dialer idle-timeout 0
dialer persistent
dialer-group 1
! probably keepalive 30
! maybe mtu 1456
! maybe ip tcp adjust-mss 1280
! and dont forget it also on LAN interface
no cdp enable
ppp authentication chap pap callin
ppp chap hostname xxx
ppp chap password yyy
ppp pap sent-username xxx password yyy
no shutdown
! place crypto map here
! perhaps ip nat outside
!
dialer-list 1 protocol ip permit
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!
! perhaps ip nat inside source list surf-nat interface Loopback0 overload
!
Hope this help's,
Juergen.
09-21-2010 06:17 PM
Hi Juergen,
so I'll remove the dial-group 1, I will add the persistant commands.
I agree with you comments about the router type, however my client purchased the router and only got me involved to configure it.
thanks
Dave
09-21-2010 06:08 PM
Hi Juergen,
are you saying change - dsl-group 0 pairs 0 to - dsl-group 0 pairs 1?
thanks
Dave
09-21-2010 10:29 PM
Dave,
the 878/1803/hwic-2shdsl have 2 sdsl modems in front of one atm-part on the 6pin RJ12 Connector.
(The hwic-4shdsl has 2 sets of this on and 8pin RJ45/48c Connector)
If the "... pair 0" does not get a dsl connection you have a chance that the cable is for the other pair
so you may try to use ",,, pair 1" . (the last option is to bundle them)
If this does not work, you must check the cabling.
Be sure no other equipment is connected to the line (wire-pair),
esp. no telephone and no filters (or the correct ones).
In your case, other modem works on that line so this may be not the problem,
so i guess it's the pinout of the sdsl cable.
You should at least get a dsl sync like
router# sh controllers dSL 0
DSL 0 controller UP
Globespan xDSL controller chipset
Line Mode: Two Wire
DSL mode: Trained with SHDSL Annex B
Frame mode: Utopia
Configured Line rate: Auto
Line Re-activated 4 times after system bootup
LOSW Defect alarm: ACTIVE
CRC per second alarm: ACTIVE
Line termination: CPE
Current 15 min counters
CRC : 0 LOSW Defect : 0 ES : 0 SES : 0 UAS : 0
Previous 15 min counters
CRC : 0 LOSW Defect : 0 ES : 0 SES : 0 UAS : 0
Current 24 hr counters
CRC : 0 LOSW Defect : 0 ES : 0 SES : 0 UAS : 0
Previous 24 hr counters
CRC : 0 LOSW Defect : 0 ES : 0 SES : 0 UAS : 0
Line-0 status
Chipset Version: 0
Firmware Version: R4.2.1
Modem Status: Data, Status 1
Last Fail Mode: No Failure status:0x0
Line rate: 2312 Kbps
Framer Sync Status: In Sync
Rcv Clock Status: In the Range
Loop Attenuation: 13.6 dB
Transmit Power: 14.5 dB
Receiver Gain: 27.420 dB
SNR Sampling: 35.6120 dB
Receive HEC Error Count: 0
Dying Gasp: Present
It takes some time for the modem to get in sync,
and setting the controller dsl to automatik will even take longer.
So check the cabling first, the dsl cable from an other modem/router's vendor may not fit
Juergen.
09-22-2010 01:43 AM
Thanks Juergen,
it turned out to be that the ISP is using a Siemens DSLAM and that the WIC card doesn't support it. I've had to use the ISP modem in bridge mode, not ideal but it works.
thanks for all your help and effort!
fyi "pair 1" doesn't work, it can only be configured as "pair 0" (2-Wire) or "pair 0-1" (4-wire), I cannot configure it as "pair 1"
Dave
09-22-2010 05:39 AM
Strange, according to Cisco Documentation,
the HWIC-2SHDSL uses infineon chipset (which is "siemens semiconductor") ;
we also had never problems against Lucent or Huawai dslam's.
Also, G.SHSDL is a much better standardised than a-dsl so no interop-issues should occour.
Looks like it's some prop. sdsl flavor, not g.shdsl .
On my 1803 (and also on the HWIC-4SHDSL) i can select the line-pair:
test(config-controller)#line-mode ?
2-wire two-wire mode
4-wire four-wire mode
auto auto wire mode
test(config-controller)#line-mode 2-wire ?
line-one Line one (RJ-11 pins 3&4)
line-zero Line zero (RJ-11 pins 2&5)
test(config-controller)#line-rate ?
192 256 320 384 448 512 576 640 704 768
832 896 960 1024 1088 1152 1216 1280 1344 1408
1472 1536 1600 1664 1728 1792 1856 1920 1984 2048
2112 2176 2240 2304
<192-2304> SHDSL Rate in kbps (line will train at selected rate plus 8kbps of DSL framing overhead)
auto auto rate mode
test(config-controller)#line-term ?
co Central Office
cpe Customer Premise Equipment
test(config-controller)#dsl-mode shdsl symmetric annex ?
A Annex A of G.991.2 standard
A-B Annex A-B
A-B-ANFP Annex A-B-ANFP
B Annex B of G.991.2 standard
B-ANFP Annex B-ANFP
test(config-controller)#
and from 1841+HWIC-4SHDSL:
!
controller SHDSL 0/0/0
termination cpe
dsl-group 0 pairs 0
shdsl annex B
shdsl rate auto
!
dsl-group 1 pairs 2
shdsl annex B
shdsl rate auto
!
!
probably ...
conf t
controller SHDSL 0/0/0
no dsl-group 0 pairs 0
dsl-group 0 pairs 1
...
?
Jürgen.
09-22-2010 11:42 PM
dsl-group 0 pairs 0 (is a valid command)
dsl-group 0 pairs 1 (is invalid command)
dsl-group 0 pairs 0-1 (is valid command)
rgds
Dave
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