Re: ISP connection with ISDN 1721 router

Re: ISP connection with ISDN 1721 router

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Subject Author Date
Re: ISP connection with ISDN 1721 router Merv 04-14-2008
Posted by Merv on April 14, 2008, 4:11 pm
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1. start be enabling ip routing

config t
ip routing
end

wri mem

2. post output of sh version


3. google for "Cisco ISDN troubleshooting" - should get some hits and
follow torubleshooting instructiosn



Posted by Merv on April 15, 2008, 8:05 am
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1. Post output of "show version"

2. Post output of "show isdn status" after interesting traffic (ping)
has been sent

3. Do you get any useful output from traceroute 80.15.236.167 or
traceroute 209.85.129.147 ???
Hopefully this shows you the first hop (ISP gateway) IP address

4. Can you ping the ISP first hop gateway IP address ?

Posted by ph-arj-vador on April 15, 2008, 10:35 am
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> 1. Post output of "show version"
Cisco Internetwork Operating System Software
IOS (tm) C1700 Software (C1700-Y-M), Version 12.2(4)YA2, EARLY
DEPLOYMENT RELEASE SOFTWARE (fc1)
Synched to technology version 12.2(5.4)T
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Thu 11-Apr-02 21:54 by ealyon
Image text-base: 0x80008124, data-base: 0x807976DC

ROM: System Bootstrap, Version 12.2(7r)XM1, RELEASE SOFTWARE (fc1)
ROM: C1700 Software (C1700-Y-M), Version 12.2(4)YA2, EARLY DEPLOYMENT
RELEASE SOFTWARE (fc1)

Router uptime is 1 day, 6 hours, 48 minutes
System returned to ROM by power-on
System image file is "flash:c1700-y-mz.122-4.YA2.bin"

cisco 1721 (MPC860P) processor (revision 0x100) with 29492K/3276K
bytes of memory.
Processor board ID FOC07110JNV (907390802), with hardware revision
0000
MPC860P processor: part number 5, mask 2
Bridging software.
X.25 software, Version 3.0.0.
Basic Rate ISDN software, Version 1.1.
1 FastEthernet/IEEE 802.3 interface(s)
1 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2142

> 2. Post output of "show isdn status" after interesting traffic (ping)
> has been sent
Router#sh isdn status
Global ISDN Switchtype =3D basic-net3
ISDN BRI0 interface
dsl 0, interface ISDN Switchtype =3D vn3
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI =3D 72, Ces =3D 1, SAPI =3D 0, State =3D
MULTIPLE_FRAME_ESTABLISHED
I_Queue_Len 0, UI_Queue_Len 0
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs =3D 0
The Free Channel Mask: 0x80000003
Number of L2 Discards =3D 0, L2 Session ID =3D 3
Total Allocated ISDN CCBs =3D 0

> 3. Do you get any useful output from traceroute 80.15.236.167 or
> traceroute 209.85.129.147 ???
> =A0 =A0 Hopefully this shows you the first hop (ISP gateway) IP address

Type escape sequence to abort.
Tracing the route to 209.85.129.99

1 * * *
2 * * *
3 * * *
4 * * *
5 * * *
6 * * *


> 4. Can you ping the ISP first hop gateway IP address ?
I don't know the ISP gatway, and it doesn't ping anywhere !!!

Thank's

Posted by Merv on April 15, 2008, 3:25 pm
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are you authenticating okay during the ISDN call ???

debug ppp neg


Router#sh isdn status
Global ISDN Switchtype = basic-net3
ISDN BRI0 interface
dsl 0, interface ISDN Switchtype = vn3
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 72, Ces = 1, SAPI = 0, State =
MULTIPLE_FRAME_ESTABLISHED
I_Queue_Len 0, UI_Queue_Len 0
Layer 3 Status:
0 Active Layer 3 Call(s)
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< no active call
Active dsl 0 CCBs = 0
The Free Channel Mask: 0x80000003
Number of L2 Discards = 0, L2 Session ID = 3
Total Allocated ISDN CCBs = 0


the ISDN layer 3 status output indicates no active calls so if the
ISdN interface / dilaer
is not up and up, your pings will
just end up in the bit bucket



Posted by ph-arj-vador on April 17, 2008, 11:11 am
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Hello,

Thanks' for your reply.

I have haded "debug ppp neg" commande line and in the debug monitor I
haven't more informations that in my last post.
I tryed to add the "dialer in-band" command line and the router
doesn't accept this command !

So I am in the same step of my problem.

Any idea ?

Thanks'


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