04-03-2003 07:47 AM - edited 03-02-2019 06:22 AM
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Can anyone help, I am having problems with the isdn on a 1603 router. The config below is one i took straight out of a cisco manual so i assume it is ok, but i stll cant get the bri port to dial. I have checked the isdn line with other equipment and they are fine. i am trying to dial an adtran over isdn. All i want to see at this stage is that the cisco has dialled.
please find attached a copy of the config i have on the 1603, and an output when i try to ping ( with debug q921,931, and dialer switched on):
router config :
Router#sh run
Building configuration...
Current configuration:
!
version 11.3
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router
!
!
username cisco-b xxxxxxxx0 xxxxxxxx
isdn switch-type basic-net3
!
!
!
interface Ethernet0
no ip address
shutdown
!
interface BRI0
ip address 10.170.0.1 255.255.0.0
encapsulation ppp
dialer idle-timeout 300
dialer map ip 10.170.0.2 name cisco-b xxxxxxxxxxxxxxxx
dialer-group 1
ppp authentication chap
!
ip classless
ip route 192.168.1.0 255.255.255.0 10.170.0.2
!
dialer-list 1 protocol ip permit
!
line con 0
line vty 0 4
login
!
end
and here is the output from a ping :
Router#ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
00:35:59: BRI0: Dialing cause ip (s=10.170.0.1, d=192.168.1.1)
00:35:59: BRI0: Attempting to dial --moderator edit-- xxxxxxxxxxxx
00:35:59: ISDN BR0: TX -> IDREQ ri = 48769 ai = 127 .
00:36:01: ISDN BR0: TX -> IDREQ ri = 42642 ai = 127 .
00:36:03: ISDN BR0: TX -> IDREQ ri = 4019 ai = 127 .
00:36:05: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0, TEI 255 changed to down
.
00:36:07: BRI0: wait for carrier timeout, call id=0x800A.
Success rate is 0 percent (0/5)
Any suggestions would be great. By the way the sh isdn stat shows deactivated and the bri light(s) on the cisco are not /have not lit. As i say thought the lines are good.
cheers
04-03-2003 08:12 AM
Router is definitely trying to dialout but layer 2 is not coming up. Router is sending
q921 IDREQuest to get a TEI assigned by the switch, but we don't see IDASSN
(ID assign) back from the switch in response to that.
~Zulfi
04-03-2003 08:35 AM
Can you please try adding "isdn tei-negotiation first-call " under the BRI 0.
Also ensure the SPIDS are correctly specified if required by the telco:
Please refer to:
http://www.cisco.com/warp/public/129/bri-layer2.html#additionaltroubleshootingproceedure
Thanks, Mak.
04-04-2003 08:35 AM
"sh isdn stat" should indicate "ACTIVE" in Layer 1 and "MULTIPLE_FRAME_ESTABLISHED" in Layer 2. If either if these antries aren't there, don't bother attempting to dial, as it will definitely fail.
Also, try to clear up the BRI interface by issuing the "clear int bri0". You can also do a "shut" and "no shut" on the BRI interface to try to reset the link. Sometimes, rebooting also helps.
If that didn't work, check with your provider if you're using the correct ISDN switch-type. Also, if you're in a region that requires you to put in some SPIDs (also provided by your provider), you will need to do so using the following commands under the BRI interface config:
isdn spid1
isdn spid2
In the end, your "sh isdn stat" should look something like the following example output: (Taken from a 2600 router)
sh isdn stat
Global ISDN Switchtype = basic-ni
ISDN BRI0/0 interface
dsl 0, interface ISDN Switchtype = basic-ni
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 111, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
TEI = 112, Ces = 2, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
TEI 111, ces = 1, state = 5(init)
spid1 configured, spid1 sent, spid1 valid
Endpoint ID Info: epsf = 0, usid = 1, tid = 1
TEI 112, ces = 2, state = 5(init)
spid2 configured, spid2 sent, spid2 valid
Endpoint ID Info: epsf = 0, usid = 3, tid = 1
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0x80000003
Total Allocated ISDN CCBs = 0
05-06-2003 05:28 AM
Try the next config, might work:
Global config:
!
isdn switch-type basic-net3
!
interface BRI0
no ip address
encapsulation ppp
dialer pool-member 1 max-link 1
isdn switch-type basic-net3
ppp authentication chap pap callin
!
interface Dialer1
description TEST
ip address negotiated
no ip proxy-arp
encapsulation ppp
no ip split-horizon
dialer pool 1
dialer idle-timeout 300
dialer string
dialer hold-queue 10
dialer load-threshold 10 either
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname
ppp chap password
ppp pap sent-username
!
map-class dialer DialClass
dialer-list 1 protocol ip permit
Good luck.
Rgds.
IDJ van der Ven
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