Solved: Connection to Cisco 876 Router problem

giokont1974 · ‎12-13-2011

Hi all,

I am experiencing a huge problem with my 876 cisco router.

This router was already configured to work in a small company. Now, I am trying to access it at home using either SDM or Internet Explorer but no luck whatsoever.

When I try to install SDM on both pc and router it gives a window requiring ip address, username and password. I am giving the ip (10.10.10.1 or even 10.0.0.1) plus the username/password (cisco/cisco) but the router cannot be reached.

When I try I.E. or Firefox it gives me a blank web page.

I have tried a typical UTP ethernet cable and even a cross-over ethernet cable but nothing comes up ever.

Tried this on Windows 7 and on Windows Server 2003...

What I see is that when I first power up the router, all lights go on and then only the OK light stays on and the CD is blinking. The Lan port light goes off after 30 or so seconds and the indication "cable unplugged" shows up in Windows...

Heeeeeeelp please!!!!!!

Thank you very much for your time!

P.S. Already tried the reset buton...

cadet alain · ‎12-15-2011

hi,

before accessing it via CCP or SDM you can do the following:

Router> enable

Router# config t

Router(config)# hostname xxx ---> xxx is the router name

Router(config)# ip domain-name xxx ---> xxx is the domain name

Router(config)# user xxx privilege 15 secret xxxx ----> your credentials

Router(config)# enable secret xxxx ---> xxx is the privileged mode password

Router(config)# crypto key generate rsa modulus 1024

Router(config)# ip ssh version 2

Router(config)# ip http server

Router(config)# ip http secure-server

Router(config)# ip http authentication local

Router(config)# line con 0

Router(config-line)# login local

Router(config-line)# line vty 0 4

Router(config-line)# login local

Router(config-line)# transport input ssh

Router(config-line)# interface vlan 1

Router(config-intf)# ip address 192.168.1.254 255.255.255.0

Router(config-intf)# no shut

Router(config-intf)# ip dhcp excluded-address 192.168.1.254

Router(config)# ip dhcp pool mypool

Router(dhcp-config)# network 192.168.1.0 255.255.255.0

Router(dhcp-config)# default-router 192.168.1.254

Router(dhcp-config)# dns-server x.x.x.x x.x.x.x ---> x.x.x.x are the dns servers from your ISP

Router(dhcp-config)# do wr -----> to save the config

Then connect your PC on a LAN port and configure it for getting its IP address from DHCP and launch the web GUI(

http://192.168.1.254 or https://192.168.1.254)

enter your credentials when asked.

Regards.

Alain

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View solution in original post

cadet alain · ‎12-13-2011

Hi,

plug in a console cable and post the output of this command: show run

Regards.

Alain

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mavespig · ‎12-13-2011

Hi George,

are you able to connect to the router via console?

If CD is blinking it means that the line did not train up, so you don't have WAN connection.

LAN port shouldn't go down, once IOS load is completed. If you reset already the router, your PC should get an address via DHCP, in the range 10.10.10.x, with .1 being the router. If that does not work, try to assign manually an IP like 10.10.10.2.

However, you should be able to see what's going on, once connected via console.

Cheers

Marco

giokont1974 · ‎12-13-2011

Thank you all for your prompt answers!

I don't have with me at this moment the necessary console cable to try it out. I will have it though tomorrow and I will do as you told me to do!

I will let you know what happens tomorrow then.

Thank you very much!

giokont1974 · ‎12-15-2011

I connected the console cable to to the router and I have no idea what to do now.......

Windows XP did not react at all once the router was connected via the console.........

What should I do now?

cadet alain · ‎12-15-2011

Hi,

you need to use a terminal emulator like Putty( http://the.earth.li/~sgtatham/putty/latest/x86/putty.exe ) and connect to Serial Port COM.

do the following: right-click on My Computer icon and select properties then select hardware tab then device manager tab then expand Ports( COM and LPT) and you'll see which port COM to use.

You'll be then in exec mode with > prompt and you'll have to type the keyword enable to get into privileged mode then type show run to view the running-config then type space bar multiple times until you have the full config displayed then scroll to beginning and left click to select while scrolling down then paste here by right clicking.

Regards.

Alain.

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giokont1974 · ‎12-15-2011

This is what boot up, using putty, showed me: (i didnt press any key to show this stuff)

C870 series (Board ID: 6-148) platform with 131072 Kbytes of main memory

Booting flash:/c870-adventerprisek9-mz.124-6.T9.bin

Self decompressing the image : ################################################# ################################################## [OK]

Restricted Rights Legend

Use, duplication, or disclosure by the Government is

subject to restrictions as set forth in subparagraph

(c) of the Commercial Computer Software - Restricted

Rights clause at FAR sec. 52.227-19 and subparagraph

(c) (1) (ii) of the Rights in Technical Data and Computer

Software clause at DFARS sec. 252.227-7013.

cisco Systems, Inc.

170 West Tasman Drive

San Jose, California 95134-1706

Cisco IOS Software, C870 Software (C870-ADVENTERPRISEK9-M), Version 12.4(6)T9, R ELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Compiled Tue 09-Oct-07 18:56 by khuie

Image text-base: 0x8002008C, data-base: 0x81AFDAC4

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

export@cisco.com.

Installed image archive

Cisco 876 (MPC8272) processor (revision 0x300) with 118784K/12288K bytes of memo ry.

Processor board ID FHK122027EP

MPC8272 CPU Rev: Part Number 0xC, Mask Number 0x10

4 FastEthernet interfaces

1 ISDN Basic Rate interface

1 ATM interface

128K bytes of non-volatile configuration memory.

28672K bytes of processor board System flash (Intel Strataflash)

--- System Configuration Dialog ---

Would you like to enter the initial configuration dialog? [yes/no]:

Press RETURN to get started!

*Mar 1 00:00:05.715: %VPN_HW-6-INFO_LOC: Crypto engine: onboard 0 State changed to: Initializ ed

*Mar 1 00:00:05.783: %VPN_HW-6-INFO_LOC: Crypto engine: onboard 0 State changed to: Enabled

*Mar 1 00:00:07.647: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to up

*Mar 1 00:00:08.647: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed st ate to up

*Mar 1 00:00:13.623: %PARSER-4-BADCFG: Unexpected end of configuration file.

*Mar 1 00:00:57.823: %LINK-5-CHANGED: Interface BRI0, changed state to administratively down

*Mar 1 00:00:58.823: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0, changed state to do wn

*Mar 1 00:36:15.103: %LINK-5-CHANGED: Interface ATM0, changed state to administratively down

*Mar 1 00:36:15.395: %SYS-5-RESTART: System restarted --

Cisco IOS Software, C870 Software (C870-ADVENTERPRISEK9-M), Version 12.4(6)T9, RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Compiled Tue 09-Oct-07 18:56 by khuie

*Mar 1 00:36:15.395: %SNMP-5-COLDSTART: SNMP agent on host Router is undergoing a cold start

*Mar 1 00:36:15.475: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is OFF

*Mar 1 00:36:16.279: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0, changed state to do wn

*Mar 1 00:36:16.979: %LINK-3-UPDOWN: Interface FastEthernet3, changed state to up

*Mar 1 00:36:16.987: %LINK-3-UPDOWN: Interface FastEthernet2, changed state to up

*Mar 1 00:36:16.991: %LINK-3-UPDOWN: Interface FastEthernet1, changed state to up

*Mar 1 00:36:16.995: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to up

*Mar 1 00:36:17.979: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet3, changed st ate to down

*Mar 1 00:36:17.987: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet2, changed st ate to down

*Mar 1 00:36:17.991: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1, changed st ate to down

*Mar 1 00:36:17.995: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed st ate to down

cadet alain · ‎12-15-2011

Hi,

your startup config is empty because you didn't save the running with the wr command or your config-register is not set to 0x2102 and so the running-config is not saved.

Can you provide output of following: show version

Regards.

Alain

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giokont1974 · ‎12-15-2011

Router>show version

Cisco IOS Software, C870 Software (C870-ADVENTERPRISEK9-M), Version 12.4(6)T9, RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Compiled Tue 09-Oct-07 18:56 by khuie

ROM: System Bootstrap, Version 12.3(8r)YI4, RELEASE SOFTWARE

Router uptime is 18 minutes

System returned to ROM by power-on

System image file is "flash:c870-adventerprisek9-mz.124-6.T9.bin"