isdn bri leased line between two cisco routers

[elnurh]

Hi everybody.

Hi have some problems with connect two cisco routers between yourself with isdn bri leased line

config is very simple.

How can I do it ?

there are a some config from routers

fisrt router config

isdn switch-type basic-net3

isdn leased-line BRI0/0 128

interface BRI0/0

ip address 172.55.20.1 255.255.255.0

encapsulation ppp

second router config

isdn switch-type basic-net3

isdn leased-line BRI0/0 128

interface BRI0/0

ip address 172.55.20.2 255.255.255.0

encapsulation ppp

what's wrong maybe I not write something please help me to solve this problem.

thanks before

[Georg Pauwen]

Hello,

is this for a lab environment, that is, is this a back-to-back config ? If so, it might be that you need to provide the ´clock rate´ at one end of the connection, e.g.:

Router1

!

interface BRI0/0

ip address 172.55.20.1 255.255.255.0

encapsulation ppp

clock rate 125000

In the configuration examples that I have seen, the ´bandwidth 128´ command is added under the interfaces, not sure if that makes a difference:

Router1

!

isdn switch-type basic-net3

isdn leased-line BRI0/0 128

!

interface BRI0/0

ip address 172.55.20.1 255.255.255.0

encapsulation ppp

bandwidth 128

Router2

!

isdn switch-type basic-net3

isdn leased-line BRI0/0 128

!

interface BRI0/0

ip address 172.55.20.2 255.255.255.0

encapsulation ppp

bandwidth 128

Regards,

GP

[elnurh]

not working

BRI0/0 is down, line protocol is down

Hardware is PQUICC BRI with U interface (Infenion)

Internet address is 172.55.20.2/24

MTU 1500 bytes, BW 128 Kbit, DLY 20000 usec,

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

Encapsulation PPP, LCP Closed, loopback not set

Keepalive set (10 sec)

Last input never, output never, output hang never

Last clearing of "show interface" counters 12:37:07

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

Reserved Conversations 0/0 (allocated/max allocated)

Available Bandwidth 96 kilobits/sec

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, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

[spremkumar]

Hi

From the supporting doc i just found to make use of HDLC as the encapsulation can u just try changing it out on both the ends and check ??

also refer the statement mentioned below..

"Because of the leased-line—not dialed—environment, configuration of ISDN called and calling numbers is not needed and not used. The BRI 0 interface is henceforth treated as a synchronous serial interface, with the default High-Level Data Link Control (HDLC) encapsulation"

regds

[Georg Pauwen]

Hello,

it looks like you have a physical problem - how are the routers connected to each other ? Do you have e.g. an ISDN simulator ?

Regards,

GP