Cisco IOS Cookbook, 2nd Edition (Cookbooks (O'Reilly)) by Kevin Dooley, Ian Brown

By Kevin Dooley, Ian Brown

By no means has anything cried out for a cookbook really up to Cisco's Internetwork working process (IOS). IOS is strong and versatile, but in addition complicated and daunting. so much projects will be finished in different alternative ways. and also you don't need to spend worthwhile time realizing which approach is healthier if you find yourself attempting to clear up an issue quick. that is what this cookbook is for. thankfully, such a lot router configuration projects might be damaged down into numerous kind of self sustaining steps: you configure an interface, you configure a routing protocol, you put up backup hyperlinks, you enforce packet filters and different entry regulate mechanisms. What you actually need is a suite of recipes that make it easier to practice the most typical projects, so that you can fast get a hold of an exceptional configuration in your web site. and also you want to know that those suggestions paintings: you don't need to discover your self enforcing a backup hyperlink at 2 A.M. simply because your major hyperlink is down and the backup hyperlink you put up for those who put in the router wasn't really right.Thoroughly revised and elevated, Cisco IOS Cookbook, 2d version, provides sections on MPLS, defense, IPv6, and IP Mobility, and provides options to the most typical configuration difficulties, including:Configuring interfaces of many varieties, from serial to ATM and body Relay Configuring all the universal IP routing protocols (RIP, EIGRP, OSPF, and BGP) Configuring authentication Configuring different prone, together with DHCP and NTP developing backup hyperlinks, and utilizing HSRP to configure backup routers handling the router, together with SNMP and different strategies utilizing entry lists to manage the site visitors throughout the routerIf you're employed with Cisco routers, you would like a ebook like this that will help you remedy difficulties fast and successfully. no matter if you are skilled, the options and broad causes provides you with new principles and insights into router configuration. And in case you are no longer experienced--if you might have simply been given accountability for handling a community with Cisco routers--this booklet can be a job-saver.

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Bin" cisco 2621 (MPC860) processor (revision 0x102) with 45056K/4096K bytes of memory. Processor board ID JAB04130B2Q (1293133440) M860 processor: part number 0, mask 49 Bridging software. 0. 3 interface(s) 2 Serial network interface(s) 32K bytes of nonvolatile configuration memory. 16384K bytes of processor board System flash (Read/Write) Configuration register is 0x2102 Router1# This router contains 32 Kb of NVRAM to store configuration files. The top of the output from the show startup-config command shows how much NVRAM storage is available, and how much this particular configuration file requires.

In this example, we used Hyperterminal because it is included with the Windows operating system. However, almost any terminal emulation program that supports xmodem or ymodem protocols will work. In fact, we have found significant differences in download times between the various emulation packages, and Hyperterminal tends to be one of the slowest. Other packages such as ProComm tend to be somewhat faster. But they all work. Even after we increased the speed of the Aux port to 115,200 bps, the file transfer took nearly 25 minutes to complete.

This means that the only way to add a new IOS image to load is to remove all of the old boot system commands and reenter them again in the order of preference. You can remove all of the boot system commands at once with the following command: Router1#configure terminal Enter configuration commands, one per line. Router1(config)#no boot system Router1(config)#end Router1# End with CNTL/Z. Once the old boot system commands have been removed, you can configure a new set in whatever order you require.

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