From: Justin Menga (Justin.Menga@xxxxxxxxxxxxxxxxxx)
Date: Wed Jan 31 2001 - 09:01:20 GMT-3
Les, I think this has something to do with your ISDN switching in the middle
- if you have a single switch in the middle, it looks like the call setup is
being routed both back to your 2500 B2 channel (like feedback) and also to
your 1600. It looks like the 2500 accepts the 'feedback' call first, and
the circuit is then established between 2500 B1 and 2500 B2. If you have
control over the ISDN switch then try using unique numbers - addresses
usually have one major rule - UNIQUENESS
I know it sounds ludicrous but I have many a time configured the wrong phone
numbers and got weird crazy stuff like above....
Regards,
Justin Menga CCIE #6640 MCSE+I CCSE
WAN Specialist
Computerland New Zealand
PO Box 3631, Auckland
DDI: (+64) 9 360 4864 Mobile: (+64) 25 349 599
mailto: justin.menga@computerland.co.nz
-----Original Message-----
From: Flack, Les [mailto:LFlack@thrupoint.net]
Sent: Wednesday, January 31, 2001 8:06 AM
To: ccielab@groupstudy.com
Subject: Problem with ISDN when calling between two routers from CH1 to
CH2 on same number.
Hi all,
I'm having a problem with ISDN when calling between two routers =
from CH1 to CH2 on the same number. (My isdn line has the same number =
for both B channels.)
For example:
My 1600 at 12.0(14) calls out of B1 and my 2500 11.3(11a) receives on =
B2 no problem.
but if I try to make the call from the 2500 to the 1600 the 2500 calls =
out on B1 AND receives the call on B2. The 1600 does see the call come =
in on B2 but receives a HOST_DISCONNECT_ACK before it can setup the =
call.
What am I doing wrong??
regards,
Les
1600 (r6#)
interface BRI0
ip address 172.168.65.1 255.255.255.0
no ip directed-broadcast
encapsulation ppp
ip ospf network point-to-point
no ip mroute-cache
dialer map ip 172.168.65.2 name r5 broadcast 9583
dialer-group 1
isdn switch-type basic-net3
ppp authentication chap
ppp chap hostname r6
ppp chap password 7 1511021F0725
end
r6#
1d05h: ISDN BR0: Incoming call id =3D 0x2E
1d05h: ISDN BR0: received HOST_INCOMING_CALL call_id 0x2E
1d05h: ISDN BR0: Event: Received a call from <unknown> on B2 at 64 Kb/s
1d05h: ISDN BR0: Event: Accepting the call id 0x2E
1d05h: %LINK-3-UPDOWN: Interface BRI0:2, changed state to up
1d05h: %ISDN-6-CONNECT: Interface BRI0:2 is now connected to unknown
1d05h: BR0:2 PPP: Treating connection as a callin
1d05h: ISDN BR0: received HOST_DISCONNECT_ACK call_id 0x2E
1d05h: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
1d05h: ISDN BR0: received HOST_DISCONNECT_ACK call_id 0x2E
r6#
2500 (r5#)
interface BRI0
ip address 172.168.65.2 255.255.255.0
no ip directed-broadcast
encapsulation ppp
no ip mroute-cache
dialer map ip 172.168.65.1 name r6 broadcast 9583
dialer-group 1
ppp authentication chap
ppp chap hostname r5
ppp chap password 7 045802150C2E=20
r5#
1d05h: ISDN BR0: Outgoing call id =3D 0x801E
1d05h: ISDN BR0: Event: Call id 0x801E to 9583 at 64 Kb/s
1d05h: ISDN BR0: received HOST_INFORMATION call_id 0x801E
1d05h: ISDN BR0: Incoming call id =3D 0x66
1d05h: ISDN Event: dsl 0 call_id 0x801E B channel assigned by switch 0
ISDN BR0: received HOST_INCOMING_CALL call_id 0x66
1d05h: ISDN BR0: llc valid, speed 64, call type is Sync
speed:-1 async:Y
1d05h: ISDN BR0: Event: Received a call from <unknown> on B2 at 64 Kb/s
1d05h: ISDN BR0: Event: Accepting the call id =3D 0x66
1d05h: %LINK-3-UPDOWN: Interface BRI0:2, changed state to up
1d05h: ISDN BR0: received HOST_ALERTING call_id 0x801E
1d05h: ISDN BR0: received HOST_CONNECT call_id 0x801E
1d05h: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
1d05h: ISDN BR0: Event: Connected to 9583 on B1 at 64 Kb/s
r5#
1d05h: %ISDN-6-CONNECT: Interface BRI0:2 is now connected to unknown
1d05h: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 9583
r5# =20
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