Cisco 851 Help

mmj_uk

mmj_uk

mmj_uk

Caporegime
Joined
26 Dec 2003
Posts
25,769
Hi, I'm back again. ;)

For some reason I can't connect to my router and access SDM, it says page cannot be displayed, I'm presuming I've enabled something whilst 'experimenting' which has disabled http/https access since the router otherwise seems to be functioning fine.

I've wacked out the console cable and used hyperterminal to connect but when i type most commands they just don't seem to be recognized. :confused:

the prompt says 'rommon1>' i type enable like in the guide (to enable sdm usage) and it says not found. :(

i guess this is good experience but help me please.
 
Last edited:
Rommon is the recovery mode of the router. Right now i am hoping you havent deleted the IOS.
Reboot the router and hope it loads straight back up. If it doesnt, you are going to need your IOS (should be on a CD with the router) and a TFTP server like pumpkin to perform a recovery.
 
did you change the config register?

type confreg and check/change the boot characteristic to correct setting to boot to ios.

check the contents of flash to see if your deleated ios
 
it boots up and the internet works fine, i just can't seem configure it at all. :confused:

when i switch the router on in hyperterminal i see this message on boot:

No bootable image file: flash:/
Unable to open boot file
Click to expand...

i take it that's bad then? :(

appreciate your help.

do i need to try and obtain one of those IOS files then? what file type is it ill look on the cd.

img: how do i check the contents of flash via hyperterminal?
 
actually ive just run sygate security test and the firewall doesnt seem to be working, so im guessing the router is just doing basic routing at this time, that explains why the lights on the front stopped flashing. :confused:
 
if you're getting that message it isn't working at all, just reload the flash from tftp, no big deal though you'll probably have lost the config
 
i imagine it'll do fine, I use 3Cdaemon personally but any tftp server will do

I can't find 851 IOS on our SAN but the 837 IOS (latest version and probably IP+) is called c837-k9o3sy6-mz.123-2.XA4 and it's a .bin file.

hope that helps
 
no bin files on the cd, nor any others with strange names like that. :(

i tried registering on cisco.com but it says i only have guest access so i guess i'm not allowed to download a new one from them, if i email them do you think they'll send one?
 
very little hope unfortunately, it should be on the CD though. it might not be named that, have you done (slightly obvious) a search for all .bin files?
 
Ok, it's a disk labled Cisco 800 & SOHO series / Product Documentation

I've just opened a brand new 828 box and that was the only CD i could find in there...

...and it doesn't contain the IOS. Hmm, I always assumed it did but to be honest we have all the ones we use on the SAN so who knows...
 
yo guys,

i've managed to get hold of one. ;)

can one of you please give me a quick guide for re-flashing it please?

thanks.
 
ok, been a while, but assuming you've just wiped the flash (which you can confirm from the rommon: prompt using 'dir flash:')

the command you want is tftpdnld, you can get the required variables from it.

if the file is present then it's a different one, make sure the boot register is set correctly (confreg 0x2142 i believe off the top of my head but i haven't used an 800 series for years)
 
well i believe it would be

rommon>set ip_address=(ip)
ip_subnet=
default_gateway=
tftp_server=

rommon>tftpdnld

sorry not used that series and the kit reg and my mind from not using it is a bit rusty hope this helps.
 
i have to figure out what the hell im doing with these tftp programs first. :(

are there any step by step guides for dummies? ;)
 
For tftp access though, wouldn't he not need a tftp server?

Type "reload" at the router prompt and then type "show running-config" and tell us if it goes back to the reverted settings.
 
generally, you need to get in running, then put the file in it's 'shared' directory, it should then be able to download. make sure your firewall is off.

then in sequence on the router....

ip_address=
ip_subnet_mask=
default_gateway=
tftp_server=
tftp_file
tftpdnld

then go for

dir flash:

to check it's there

then reboot and see if it comes up...any problems give us a shout
 
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