It might be useful here to include a 'show run', 'show version', 'debug isdn
q921' and 'debug isdn q931' in order to get a better idea why the connection
is timing out. Short of that, contact your carrier and have them verify the
line.
Mike
----- Original Message -----
From: "Andrew Lawrence" <[EMAIL PROTECTED]>
To: "Firewalls (E-mail)" <[EMAIL PROTECTED]>
Sent: Friday, December 29, 2000 1:25 PM
Subject: Cisco router problem
> I've got a Cisco 3600 which originally had a Pri rate ISDN interface and a
> network interface.
>
> This was setup and running to not only dial our ISP but also to dial into
> some other customers via ISDN. I was told that 15 isdn channels fed into
> this interface.
>
> We then moved over to a leased line and purchased an X.21 card. At the
same
> time we added a firewall. Due to the configuration of the firewall we lost
> the ability to dial into our customers (The router was no longer reachable
> from our network as the firewall had hidden it) We now have a different
> firewall and the router is visible again.
>
> I'm trying to resurrect the ISDN connections but I am not having much fun
!
> I need some help in debugging it to try and find out what is going on.
>
> When I ping something that has a route entry and dialer setup I get the
> following debug output
>
> interprod1-1-gw#ping 192.168.88.1
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 192.168.88.1, timeout is 2 seconds:
>
> 01:38:50: Serial1/0:15: rotor dialout [priority]
> 01:38:50: Serial1/0:15: Dialing cause ip (s=193.xxx.xxx.xx,
d=192.168.88.1)
> 01:38:50: Serial1/0:15: Attempting to dial 90171xxxxxx..
> 01:38:54: %ISDN-6-LAYER2DOWN: Layer 2 for Interface Se1/0:15, TEI 0
changed
> to d
> own
> 01:38:54: ISDN Se1/0:15: Event: received NL_REL_IND
> 01:38:54: Serial1/0:15: wait for carrier timeout, call id=0x800E.
> 01:38:56: Serial1/0:15: rotor dialout [priority]
> 01:38:56: Serial1/0:15: Dialing cause ip (s=193.xxx.xxx.xx,
d=192.168.88.1)
> 01:38:56: Serial1/0:15: Attempting to dial 90171xxxxxx..
> Success rate is 0 percent (0/5)
> interprod1-1-gw#
> 01:39:00: %ISDN-6-LAYER2DOWN: Layer 2 for Interface Se1/0:15, TEI 0
changed
> to d
> own
> 01:39:00: ISDN Se1/0:15: Event: received NL_REL_IND
> 01:39:00: Serial1/0:15: wait for carrier timeout, call id=0x800F
>
>
> When I do show int
> The serial interface for serial 1/0:0 to serial 1/0:14 is down,line
protocol
> is down
> but for serial 1/0:15 it is up, line protocol is up (spoofing)
>
> Sho isdn status gives me
>
> ISDN Serial1/0:15 interface
> Layer 1 Status:
> ACTIVE
> Layer 2 Status:
> TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
> Layer 3 Status:
> 0 Active Layer 3 Call(s)
> Activated dsl 0 CCBs = 0
> Number of L2 Discards = 129, L2D_Task Discards = 53
> Total Allocated ISDN CCBs = 0
>
> Does any of this shed any light on why it does n't work. Whatother things
> do I need to look at.
>
> As you've probably realised I'm new to this Cisco stuff !
>
> The only other thing I can remember is when the firewall people
reconfigured
> the Cisco they did have some problems with Timeslots. Are these important
!
>
> As an aside can anyone point in the direction of a good book on
configuring
> Cisco routers ?
>
> TIA
>
> Andy
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>
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