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New Member

DSL configuration on Cisco 1720

I have a Cisco 1720 with 1-Port ADSL WAN interface card installed. I configured the DSL WAN interface but couldn't turn it on with the no shutdown command. Any suggestions?

4 REPLIES
Cisco Employee

Re: DSL configuration on Cisco 1720

After "no shut" under the atm interface if "shutdown" is not there in the running config that means the dsl/atm interface is already in "no shut" mode..Now what does "sh interface atm x/y" reports?

It it reports "interface is up" means dsl line is trained..Tejal

New Member

Re: DSL configuration on Cisco 1720

Here is "sh interface" reports.

Cisco#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Cisco(config)#int atm0

Cisco(config-if)#no shut

Cisco(config-if)#end

Cisco#sh int atm0

ATM0 is down, line protocol is down

Hardware is DSLSAR (with Alcatel ADSL Module)

Internet address is 209.232.135.34/30

MTU 4470 bytes, sub MTU 4470, BW 992 Kbit, DLY 2060 usec,

reliability 0/255, txload 1/255, rxload 1/255

Encapsulation ATM, loopback not set

Encapsulation(s): AAL5, PVC mode

24 maximum active VCs, 256 VCs per VP, 1 current VCCs

VC idle disconnect time: 300 seconds

Last input never, output never, output hang never

Last clearing of "show interface" counters never

Queueing strategy: fifo

Output queue 0/40, 0 drops; input queue 0/75, 0 drops

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, 10 interface resets

0 output buffer failures, 0 output buffers swapped out

SDUL_Cisco#

Cisco Employee

Re: DSL configuration on Cisco 1720

Its dow/down means the dsl line is not either plugged in or not trained (connected) to the provider..Its Layer 1 problem..The router is not seeing a carrier on the ADSL interface..

Here is the link which helps you to troubleshoot more in Layer 1 issues.

http://www.cisco.com/warp/public/794/wicadsl_lyr1.html

Did you talk to the provider about that?

Thanks...Tejal

New Member

Re: DSL configuration on Cisco 1720

Hi

Did you get anywhere with this?

Just wondered because I have the same problem althought the router works on my adsl connection it doesnt work on the customers. The customers circuit is OK because I have used a USB ADSL modem on it to verify the line was ok.

Cheers

Nick

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