Re: ISDN BRI problem

dfrenay_olabs · ‎08-28-2012

Hello,

I' ve a problem unpredictable on my interface bri0/0/0 (HWIC 1B-U card) on cisco 2901 : layer 1 U interface is DEACTIVATED - CO RUNNING LOOPBACK TESTS...

And with this message it's impossible to run the line. I don't understand why this error message come from.

Thank you for your help.

router#show controllers bri0/0/0

BRI unit 0:BRI unit 0 with U interface:

Layer 1 internal state is PENDING ACTIVATION

FPGA version = V6

FPGA create = 09/02/18 24

Layer 1 U interface is DEACTIVATED - CO RUNNING LOOPBACK TESTS

** TELEPHONE COMPANY CENTRAL OFFICE RUNNING TESTS ON LINE **

External S/T is DEACTIVATED - Requesting Timing

ISDN Line Information:

Last C/I from ISDN transceiver:

DR:Deactivation Request

Last C/I to ISDN transceiver:

B1 Channel Information:

Interface BRI0/0/0:1

Hardware is HDLC32. this B channel is not initialized yet!

Slot 0, Wic_slot 0, Port 0

0 missed datagrams, 0 overruns

0 bad datagram encapsulations, 0 memory errors

0 transmitter underruns 0 d channel collisions

B2 Channel Information:

Interface BRI0/0/0:2

Hardware is HDLC32. this B channel is not initialized yet!

Slot 0, Wic_slot 0, Port 0

0 missed datagrams, 0 overruns

0 bad datagram encapsulations, 0 memory errors

0 transmitter underruns 0 d channel collisions

router#show int bri0/0/0

BRI0/0/0 is up, line protocol is up (spoofing)

Hardware is HWIC BRI with U interface (82912)

Interface is unnumbered. Using address of Loopback1 (172.30.122.1)

MTU 1500 bytes, BW 64 Kbit/sec, DLY 20000 usec,

reliability 240/255, txload 1/255, rxload 1/255

Encapsulation PPP, LCP Closed, loopback not set

Keepalive set (10 sec)

Last input 00:48:37, output never, output hang never

Last clearing of "show interface" counters 00:49:14

Input queue: 0/75/7/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: weighted fair

Output queue: 0/1000/64/0 (size/max total/threshold/drops)

Conversations 0/0/16 (active/max active/max total)

Reserved Conversations 0/0 (allocated/max allocated)

Available Bandwidth 48 kilobits/sec

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

4 packets input, 32 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

7 input errors, 7 CRC, 0 frame, 0 overrun, 0 ignored, 5 abort

0 packets output, 0 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

0 unknown protocol drops

0 output buffer failures, 0 output buffers swapped out

6 carrier transitions

interface BRI0/0/0

ip unnumbered Loopback1

encapsulation ppp

dialer idle-timeout 300

dialer map ip 172.30.122.2 name nim1c1 broadcast 0141335690

dialer hold-queue 4

dialer-group 1

isdn switch-type basic-net3

isdn tei-negotiation first-call

isdn point-to-point-setup

isdn incoming-voice data

isdn sending-complete

trunk-group ALL_BRI 1

ppp authentication chap

Sandeep Choudhary · ‎08-29-2012

Can you please paste the output of the command:

sh isdn status

sh isdn active

If layer 1 is deactivated:please check cable connection and then follow these steps:

Perform the steps in this section and, after each step, issue the show isdn status command to check if Layer 1 is up (ACTIVE).

1. Issue the shutdown then the no shutdown command on the BRI interface .

2. This ensures that the BRI interface is not administratively down. You can also issue the clear interface bri number command to reset the interface.

regards

Please rate if it helps.

dfrenay_olabs · ‎08-29-2012

In fact the channel D is busy, Led NT1 is green. I've reboot the router, same thing, but the line should up only if some icmp packets are send to the other router.

Sandeep Choudhary · ‎08-29-2012

can u please paste the output ..then we will see :

sh isn status

Regards

dfrenay_olabs · ‎08-29-2012

here :

router#show isdn status

Global ISDN Switchtype = basic-net3

ISDN BRI0/0/0 interface

dsl 0, interface ISDN Switchtype = basic-net3

Layer 1 Status:

DEACTIVATED

Layer 2 Status:

Layer 2 NOT Activated

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 0 CCBs = 0

The Free Channel Mask: 0x80000003

Total Allocated ISDN CCBs = 0

Sandeep Choudhary · ‎08-30-2012

Hi Remi,

If the show isdn status command output indicates that Layer1 is DEACTIVATED, then there is a problem with the physical connectivity.

1. Issue the shutdown then the no shutdown command on the BRI interface .

2. This ensures that the BRI interface is not administratively down. You can also issue the clear interface bri number command to reset the interface.

if the problem still exits then :

It most probably TELCO problem only. I have also faced same problem once. I did all possibilities. But still it was showing deactivated. Telco also done lots of testing.They even came to my location and tested the circuit and told there is no problem at all in their part. But after a long investigation they found some problem in their switching department.

It could be a port issue also. try to swap the connection with another port or module.

Regards

Please rate if it helps.

paolo bevilacqua · ‎08-30-2012

sandeepchoudhary21 wrote:

Hi Remi,

If the show isdn status command output indicates that Layer1 is DEACTIVATED, then there is a problem with the physical connectivity of the T1 line.

That is incorrect. First of all, a BRI circuit is not a " T1 line".

Secondly, anywhere in the world excpet the US, it is normal that telco removes power to the BRI circuit after a timeout. The circuit power is then re-applied as soon a call is attempted in either deictions.

Sandeep Choudhary · ‎08-30-2012

Hi Paolo,

Thanks for correction about T1 line, that was my mistake.

Secondly, anywhere in the world excpet the US, it is normal that telco removes power to the BRI circuit after a timeout. The circuit power is then re-applied as soon a call is attempted in either deictions.

I did not get this point????

and what do you think ,what is the problem with this interface??

Thanks again.

Regards

paolo bevilacqua · ‎08-31-2012

You can search for more posts regarding BRI to understand what that means.

Regarding OP problem, he first update IOS, then post more information

darren.g · ‎09-02-2012

remi Houssoulliez wrote:

here :

router#show isdn status

Global ISDN Switchtype = basic-net3

ISDN BRI0/0/0 interface

dsl 0, interface ISDN Switchtype = basic-net3

Layer 1 Status:

DEACTIVATED

Layer 2 Status:

Layer 2 NOT Activated

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 0 CCBs = 0

The Free Channel Mask: 0x80000003

Total Allocated ISDN CCBs = 0

Remi.

Out of curiosity, what country are you in?

There are several different ISDN switch types which are used, depending on what country you are in. Yours is set to basic-net3, which is only valid on NET3-ISDN switches (Some parts of Europe, norway, New Zealand). If you're in a country which uses a different switch type, you may need to change this to match. Your Telco should be able to telly ou which ISDN switch type you should use.

See the folowing document

http://www.cisco.com/en/US/docs/ios/11_3/feature/guide/natisdn.html

for information on available switch types. For example, as an Aussie, I use basic-ts013 for BRI and primary-net5 for PRI circuits. Mis-match of switch type can cause the interface to not come up.

Also, what type of TA is installed for your ISDN circuit? This can also cause a mis-match. Sorry if this is vague - I'm dredging up stuff I haven't used in literally 10 years from memory.

Cheers.

paolo bevilacqua · ‎09-03-2012

basic-ts013 is obsolete for Australia. I have installation there and all do work fine with basic-net3.

(config)#isdn switch-type ?

basic-1tr6 1TR6 switch type for Germany

basic-5ess Lucent 5ESS switch type for the U.S.

basic-dms100 Northern Telecom DMS-100 switch type for the U.S.

basic-net3 NET3 switch type for UK, Europe, Asia and Australia

basic-ni National ISDN switch type for the U.S.

basic-qsig QSIG switch type

basic-ts013 TS013 switch type for Australia (obsolete)

ntt NTT switch type for Japan

vn3 VN3 and VN4 switch types for France

In fact, also "basic-1tr6" is now obsolete, as well the vestigial "ntt" and "vn3" types.

darren.g · ‎09-03-2012

Paolo Bevilacqua wrote:

basic-ts013 is obsolete for Australia. I have installation there and all do work fine with basic-net3.

Like I said, Paolo, I was dredging information from about 10 years ago :-). I haven't used a BRI in ages. I was more concerned that the original poster might be in the US, where basic-net3 won't work.

Cheers.

paolo bevilacqua · ‎09-04-2012

Hi Darren, I was being too zealant, appreciate your contribution here.