Cisco 1600 Connectivity Issues

[SWTpaul]

To start I am not well versed in Cisco products or technologies relating to WAN.

We have a Cisco 1600 at the main office, and a 1600 at the warehouse. There were strange connectivity issues a couple months ago, and now the demons have come back.

There have been no network configuration changes, hardware or software.

The WAN activity light on the routers are on/off at the same time, and during this connectivity issues, mostly off. On the each of the LANs I was able to ping the routers with no problem.

My question is, do you think there is a physical problem with one of the routers, the physical line between the two locations (ISP), or the DNS on the network?

Thanks for any help!

To top it off, there was no documentation on the setup of the routers, and no passwords to access the configs.

 

[burtsbees]

We would need to look at interface details in the config, so can you do a password recovery? This involves shutting the router down, and password recovery should take no longer than 5 minutes or so...

Burt

 

[burtsbees]

In other words, let me know if 5 minutes down time is okay, and I will post exactly how to do password recovery.

Burt

 

[SWTpaul]

Thanks Burt!

Can you post how to do the recovery and I will try it out tonight?

Also, should this be done via TCP/IP or direct through a terminal cable?

 

[burtsbees]

Via console cable (rollover to DB-9, db9 end plugged into your computer's serial port).
Console in, and within 30 seconds, initiate a break. You get the
rommon1>
prompt. Then do this...
rommon1>confreg 2142
rommon2>reset
Let it boot all the way up then, and answer "no" to the first question, and "yes" to the second (if it asks a second question). Then you get
router>
so then do this...
router>en
router#copy start run
router#conf t
router(config)#no enable password
router(config)#no enable secret
router(config)#line con 0
router(config-line)#password bla
router(config-line)#login
router(config-line)#line vty 0 4
router(config-line)#password bla
router(config-line)#login
router(config-line)#exit
router(config)#enable secret blabla
router(config)#end
router#wr
The line con 0 and line vty 0 4 passwords can be the same, but the enable secret password must be different. When you initially log into the router, you will be asked for "bla". When you type
router>en
you be asked for the "blabla" password. After all is said and done, then post the output of these...
router#sh controllers (whatever the WAN interface is)
sh run
sh int (WAN interface).

Burt

 

[burtsbees]

Almost forgot...change the configuration register back to 2102...
router>en
router#conf t
router(config)#config-register 0x2102

Burt