CCNA - IOS Image

Author

IOS Image

justindu

2003-10-03, 12:06 pm

If you start the router and it cannot find the Cisco IOS system image, what will happen?

A. The router will not operate.
B. The router will request that you make the Cisco IOS available.
C. You will have to manually set up the router in the setup mode.
D. The router will ask you to install any router operating system.

Answer says C

But, how does the router get to setup mode without an IOS?

nethead

2003-10-03, 12:14 pm

In this situation the router will stay in Rom monitor mode and you will see the following prompt:
rommon>

You would not be in "setup mode" as the question puts it, I think this is a bad question.

In ROM monitor mode you will need to configure the router to install the IOS image, either via the xmodem command (for download via the console port) or by setting the ip commands to allow a copy via the ethernet interface.

xakeP

2003-10-03, 5:10 pm

router will keep looking for an IOS in flash, then in tftp

NetStroller

2003-10-03, 11:29 pm

I think when no IOS is found, you will boot into a mini IOS stored in ROM to allow you to restore the full IOS.

mikop

2003-10-03, 11:39 pm

won't this be a fun little hands on exercise... you can practice loading ios from tftp and all that fun stuff the book talk about...

and heh... stuff you will see in real life and quite possibly in your interview...

"hi Michael, you were wonderful in the interview, let me show you around" ... stroll to a *lab* to show you all the available equipments for you to further your knowledge and career goals etc if you are employed there and who would've guessed... what's that on that bench?

*cough*

$200 for a 2501 off ebay and a little effort/time now save you the embarassment.

mikop

2003-10-04, 12:12 am

In hoping you take away more than just an answer for that question, here is some link/info

http://www.examnotes.net/forums/sho...&highlight=boot

link mentioned (close enough... the search isn't exactly at the same spot now :P ).

http://www.cisco.com/univercd/cc/td...g_v1/tr1903.htm

a search of *boot sequence* in the cisco forums here return good results, including some words of wisdom from Yankee

http://www.examnotes.net/forums/sho...t=boot+sequence

rsteedma answered it pretty well also.
http://www.examnotes.net/forums/sho...t=boot+sequence
look at this link, basic should suffice.

some old school stuff, ppl who rarely post here any more... or just lurk.
http://www.examnotes.net/forums/sho...t=boot+sequence

this is to demonstrate, the versions of the tests can change, and with each change, ppl freak out about their study resources... but heh jan 2001... and that same knowledge is still being asked... this is relevant because... anyone wanna bet a similar question on this topic will also be on the new test? and who would possibly answer any question on that wrong if htey have read through the posts by members, if not the links

edmonds_robert

2003-10-04, 2:46 pm

I can tell you from a recent experience on my live network what happens.
I was upgrading a Cisco 3524XL switch to the latest IOS image. Actually, I was upgrading all of them on my network, which consists of approximately 40 access switches, with routers, firewalls, and my core switch thrown into the mix. I was using notepad to store all of the commands necessary to upgrade the switches, from which I would copy and paste to the switch.
On one of the switches, the TFTP didn't work, but I had already copied the next part of the text file, and I accidentally pasted it to the switch, including the line that read, "reload." When my switch rebooted, it would only get to Rommon mode, from where I had to copy the IOS image using my console cable and the Xmodem protocol.
It takes about 6 seconds to TFTP the file, but it took 36 minutes to transfer it via Xmodem. So, that's a good lesson about being careful with your upgrades, so you don't have to sit and watch a 6 second TFTP turn into a 36 minute Xmodem.

Robert

justindu

2003-10-04, 4:25 pm

Good advice.. Thanks

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