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Loading IOS
ajith.maharaj
Registered Users Posts: 4 ■□□□□□□□□□
in CCNA & CCENT
hi,i have a cisco 870 router and i mistakely deleted the IOS,how do i re-install it.
Comments
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Optionsalan2308 Member Posts: 1,854 ■■■■■■■■□□The first step is to find an IOS image if you don't have a back-up copy. Next, go to this page and follow the instructions in the "Disaster Recovery with TFTP Download" section:
Cisco 850 Series and Cisco 870 Series Access Routers Software Configuration Guide - ROM Monitor [Cisco 800 Series Routers] - Cisco Systems
We've all done that or something equally bad along the way. It's part of the learning experience. -
OptionsAlanJames Member Posts: 230haha ops :P
xmodem
thankfully i've not had to do it yet.. But I'm pretty sure I will one day.. -
OptionsCiskHo Member Posts: 188no need for xmodem.
Thank God for the ability to tftp an IOS image.... xmodem is something that you do at the end of the day (assuming no LAN/tftp server available) and then check on when you get back into work the next morning. NOT FUN!My Lab Gear:
2811(+SW/POE/ABGwifi/DOCSIS) - 3560G-24-EI - 3550-12G - 3550POE - (2) 2950G-24 - 7206VXR - 2651XM - (2) 2611XM - 1760 - (2) CP-7940G - ESXi Server
Just Finished: RHCT (1/8/11) and CCNA:S (Fall 2010)
Prepping For: VCP and CCNP SWITCH, ROUTE, TSHOOT -
Optionsalan2308 Member Posts: 1,854 ■■■■■■■■□□You are assuming he has a working LAN and tftp server!
He is obviously posting from a working PC, which is all you need. Plug the PC directly into the router. And Pumpkin is a free download away.
Besides, the 870 has a built in switch, so you don't even need a crossover cable.Thank God for the ability to tftp an IOS image.... xmodem is something that you do at the end of the day (assuming no LAN/tftp server available) and then check on when you get back into work the next morning. NOT FUN!
Been there, done that. Never again. -
OptionsCiskHo Member Posts: 188He is obviously posting from a working PC, which is all you need. Plug the PC directly into the router. And Pumpkin is a free download away.
(I always try to assume the worst case scenario because that is usually what I am faced with at work )
What is Pumpkin? Never heard of it but it sounds like something I should check out.My Lab Gear:
2811(+SW/POE/ABGwifi/DOCSIS) - 3560G-24-EI - 3550-12G - 3550POE - (2) 2950G-24 - 7206VXR - 2651XM - (2) 2611XM - 1760 - (2) CP-7940G - ESXi Server
Just Finished: RHCT (1/8/11) and CCNA:S (Fall 2010)
Prepping For: VCP and CCNP SWITCH, ROUTE, TSHOOT -
Optionstiersten Member Posts: 4,505xmodem is something that you do at the end of the day (assuming no LAN/tftp server available) and then check on when you get back into work the next morning. NOT FUN!
And it really doesn't that take long if you remember to increase the baud rate before doing the transfer. Don't go crazy with it as the console port doesn't do anything handshaking so you'll get overruns if you go too fast. -
Optionsalan2308 Member Posts: 1,854 ■■■■■■■■□□Right... Silly me thought his PC could have been at home while his router was at work. What's the max distance on Cat5e again??
(I always try to assume the worst case scenario because that is usually what I am faced with at work )
What is Pumpkin? Never heard of it but it sounds like something I should check out.
Pumpkin is a free tftp server.
And why would that make any difference? Without an IOS image, you would have to transfer the image locally (tftp or xmodem) and you still need a working PC nearby in either case. Besides, if the router isn't fixed, he shouldn't have gone home yet anyway. -
Optionsajith.maharaj Registered Users Posts: 4 ■□□□□□□□□□hi,can anybody give me a link for the 870 IOS as i cannot find it on the cisco site
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Optionsphoeneous Member Posts: 2,333 ■■■■■■■□□□ajith.maharaj wrote: »hi,can anybody give me a link for the 870 IOS as i cannot find it on the cisco site
Saw that one coming -
Optionsajith.maharaj Registered Users Posts: 4 ■□□□□□□□□□Saw that one coming
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Optionsgouki2005 Member Posts: 197rommon 11 > IP_ADDRESS=192.168.1.5
rommon 12 > IP_SUBNET_MASK=255.255.255.0
rommon 13 > DEFAULT_GATEWAY=192.168.1.1
rommon 14 > TFTP_SERVER=192.168.1.10
rommon 15 > TFTP_FILE=c1841-advipservicesk9-mz.124-13a.bin
rommon 16 > tftpdnld
i have a question
which interface is receiving that config??? because you must connect your pc to the router in some way -
Optionsjohnwest43 Member Posts: 294usally its the first fast ethernet port on the router.CCNP: ROUTE B][COLOR=#ff0000]x[/COLOR][/B , SWITCH B][COLOR=#ff0000]x[/COLOR][/B, TSHOOT [X ] Completed on 2/18/2014
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Optionsgreenerek Member Posts: 99 ■■□□□□□□□□I did the same mistake when i was studying CCNA . Like the others said...only xmodem or If you have a Lan and opportunity to use tftp server (can be your computer) use a command tftpnld
Xmodem is very very very slow but you can speed-up a little bit by changing cosnole baud rate from 9600 to 115200
Xmodem Console Download Procedure Using ROMmon - Cisco Systems
about cisco IOS- is licensed and you cannot just download for free , obviously if you want to have a legal onePer aspera ad astra-Seneka