By Kevin Dooley, Ian Brown
By no means has whatever cried out for a cookbook relatively up to Cisco's Internetwork working procedure (IOS). IOS is robust and versatile, but in addition complicated and daunting. so much projects will be complete in numerous alternative ways. and also you don't desire to spend useful time knowing which means is better if you find yourself attempting to resolve an issue quick. that is what this cookbook is for. thankfully, so much router configuration initiatives may be damaged down into numerous kind of self reliant steps: you configure an interface, you configure a routing protocol, you place up backup hyperlinks, you enforce packet filters and different entry regulate mechanisms. What you actually need is a collection of recipes that assist you practice the most typical projects, so that you can quick get a hold of a superb configuration to your website. and also you want to know that those recommendations paintings: you do not need to discover your self imposing a backup hyperlink at 2 A.M. simply because your major hyperlink is down and the backup hyperlink you place up if you happen to put in the router wasn't fairly right.Thoroughly revised and improved, Cisco IOS Cookbook, 2d version, provides sections on MPLS, protection, IPv6, and IP Mobility, and offers strategies to the most typical configuration difficulties, including:Configuring interfaces of many varieties, from serial to ATM and body Relay Configuring the entire universal IP routing protocols (RIP, EIGRP, OSPF, and BGP) Configuring authentication Configuring different prone, together with DHCP and NTP constructing backup hyperlinks, and utilizing HSRP to configure backup routers dealing with the router, together with SNMP and different suggestions utilizing entry lists to regulate the site visitors in the course of the routerIf you're employed with Cisco routers, you wish a ebook like this that will help you clear up difficulties quick and successfully. no matter if you are skilled, the options and vast causes provide you with new principles and insights into router configuration. And if you are now not experienced--if you might have simply been given accountability for dealing with a community with Cisco routers--this publication can be a job-saver.
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Extra info for Cisco IOS Cookbook, 2nd Edition (Cookbooks (O'Reilly))
Example text
In this case, both the startup-config and ifIndex-table files are readable and writeable. For example, you could look at your router’s startup-config file by using the following command: Router1#more nvram:/startup-config You can view any file that has an “r” and modify any file that has a “w”. But the two files in this router’s NVRAM that have neither “r” nor “w” can’t be displayed, modified, or deleted. Note that the file ifIndex-table in particular is in a binary format that isn’t very meaningful when you display it with the more command like this.
2(7a), RELEASE SOFTWARE (fc2) Copyright (c) 1986-2002 by cisco Systems, Inc. bin" cisco 2520 (68030) processor (revision E) with 16384K/2048K bytes of memory. Processor board ID 03870281, with hardware revision 00000002 Bridging software. 0. 1. 3 interface(s) 2 Serial network interface(s) 2 Low-speed serial(sync/async) network interface(s) 1 ISDN Basic Rate interface(s) 32K bytes of nonvolatile configuration memory. 16384K bytes of processor board System flash (Read/Write) Configuration register is 0x2102 Router1# Booting over the Network | 23 This shows that the router is running the new version of IOS, which it loaded by using TFTP.
This compression algorithm will not attempt to compress a file that is three times larger than the available NVRAM space. Although this limit exists, we have never seen a router approach a 3-to-1 ratio in practice anyway. The actual amount of available NVRAM storage varies between different router models. 2(12a), RELEASE SOFTWARE (fc1) Copyright (c) 1986-2002 by cisco Systems, Inc. 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.
