December 2006
Intermediate to advanced
1188 pages
72h 8m
English
Content preview from Cisco IOS Cookbook, 2nd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Using SNMP to Copy a New IOS Image
Problem
You want use SNMP to remotely upgrade a router’s IOS.
Solution
Before you can upload or download the router’s IOS image to a TFTP server, you have to set up a valid read-write SNMP community string:
Router#configure terminalEnter configuration commands, one per line. End with CNTL/Z. Router(config)#snmp-server communityORARWrwRouter(config)#end
Then you can download a copy of your router’s current IOS file to your TFTP server with the following Unix commands:
Freebsd%touchFreebsd%/tftpboot/c2600-jk9o3s-mz.122-7a.binchmod 666Freebsd%/tftpboot/c2600-jk9o3s-mz.122-7a.binsnmpset –v1 -cORARW Router.1.3.6.1.4.1.9.2.10.9.172.25.1.1enterprises.9.2.10.9.172.25.1.1 = "c2600-jk9o3s-mz.122-7a.bin" Freebsd%s c2600-jk9o3s-mz.122-7a.bin
Use the following commands to upload an IOS file from your TFTP server to the router’s flash memory:
Freebsd%chmod 666Freebsd%/tftpboot/c2600-jk9o3s-mz.122-7a.binsnmpset –v1 -cORARW Router.1.3.6.1.4.1.9.2.10.6.0 i1enterprises.9.2.10.6.0 = 1 Freebsd%snmpset –v1 -cORARWRouter.1.3.6.1.4.1.9.2.10.12.172.25.1.1senterprises.9.2.10.12.172.25.1.1 = "c2600-jk9o3s-mz.122-7a.bin" Freebsd%c2600-jk9o3s-mz.122-7a.bin
Discussion
The first example demonstrates how to use SNMP to force a router to download its IOS file to a TFTP server. Most TFTP servers will not accept an incoming transfer unless the destination file is world writable. On Unix computers, the touch command creates a file, and the chmod command gives ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.