ISDN problems

Unanswered Question
May 4th, 2007

I have had no experience with ISDN...teacher wanted to know if anyone could set this up, so I tried. I'm in semester 2, and this is apparently semester 4 stuff....

NETWORK -- ROUTER -- ATLAS550 -- ROUTER -- NETWORK

Sorry I can't give you a better looking topology....but basically, I'm just using the Atlas550 to simulate the provider, I want to connect to two networks together through that. The two routers I'm using are 800 series. Here is the configuration for one of them (the other one isn't much different except for SPIDs, ip address, etc)

sh ru

Building configuration...

Current configuration : 758 bytes

!

version 12.2

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname BRI-2

!

enable secret xxx

!

!

ip subnet-zero

!

no ip domain-lookup

isdn switch-type basic-ni

!

!

!

interface Ethernet0

ip address 192.168.14.2 255.255.255.0

interface BRI0

ip address 194.168.14.2 255.255.255.0

dialer rotary-group 1

isdn switch-type basic-ni

isdn spid1 51055510000002 5551002

isdn spid2 51055510010002 5551003

no cdp enable

!

interface Dialer0

no ip address

no cdp enable

!

interface Dialer1

no ip address

no cdp enable

!

ip http server

ip classless

!

!

line con 0

password cisco

logging synchronous

login

stopbits 1

line vty 0 4

password cisco

login

!

!

end

BRI-2#sh isdn stat

Global ISDN Switchtype = basic-ni

ISDN BRI0 interface

dsl 0, interface ISDN Switchtype = basic-ni

Layer 1 Status:

ACTIVE

Layer 2 Status:

TEI = 64, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED

TEI = 65, Ces = 2, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED

TEI 64, ces = 1, state = 5(init)

spid1 configured, spid1 sent, spid1 valid

Endpoint ID Info: epsf = 0, usid = 70, tid = 1

TEI 65, ces = 2, state = 5(init)

spid2 configured, spid2 sent, spid2 valid

Endpoint ID Info: epsf = 0, usid = 70, tid = 2

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 0 CCBs = 0

The Free Channel Mask: 0x80000003

Number of L2 Discards = 0, L2 Session ID = 20

Total Allocated ISDN CCBs = 0

BRI-2#sh int bri0

BRI0 is up, line protocol is up (spoofing)

Hardware is BRI with U interface and POTS

Internet address is 194.168.14.2/24

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

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

Encapsulation HDLC, loopback not set

DTR is pulsed for 1 seconds on reset

Last input 00:00:08, output 00:00:08, output hang never

Last clearing of "show interface" counters 00:04:54

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

Queueing strategy: weighted fair

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

Conversations 0/1/16 (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

58 packets input, 232 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

58 packets output, 232 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

BRI-2#

I can't get the two SOHO routers to talk to each other...and I'm not sure if the configuration even works, there is supposed to be active calls correct?

Remember, I'm completely new with this stuff, just started testing yesterday with the equipment. Will that configuration work? Or what do I have to add to get it working?

ALSO: I configured the Atlas550 by what it told me in the manual...switch-type and SPIDs are correct. The IP on bri0 on the other router is 194.168.14.1

Thanks,

Ben Hulett

I have this problem too.
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sundar.palaniappan Fri, 05/04/2007 - 06:07

Ben,

Good you are ahead of the class :-)

Your ISDN status looks good but you are missing some configuration to initiate ISDN. Here's a link that has sample basic ISDN configuration example that should help you fill in the gaps.

http://cisco.com/en/US/tech/tk801/tk379/technologies_configuration_example09186a0080094abd.shtml

Let us know if you still have any problems getting it to work.

HTH

Sundar

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