How to find LAN Switching Information in UniverCD

Posted July 26, 2006 by Josh
Categories: Documentation, Technologies

switchesOn the left-hand side of UniverCD, click ‘Catalyst Switches’ and select your switching platform. Note that the most recent documentation links sometimes do not have the hardware and software configuration documentation. Some of these links only contain the release notes, not the configuration guides.

However, you will see information below the hyperlink such as

Catalyst 3550 Multilayer Switches, Rel, 12.2(25)SEE1, May 2006
Release notes for Catalyst 3550 switches, Cisco IOS Release 12.2(25)SEE1 released during or after May 2006. NOTE: For other software and hardware documentation, see IOS Release 12.2(25)SEE.

directing you to go to 12.2(25)SEE’s documentation for the software/hardware documentation.

Try this to get acquainted with your own switches’ IOS switching documentation.

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HSRP with NAT

Posted July 26, 2006 by Josh
Categories: Documentation, Lab Solutions

NAT with Redundancy:

Go to Release 12.4 -> Configuration Guides -> IP Application Services Configuration Guide -> First-Hop Redundancy Protocols -> Configuring HSRP -> Linking IP Redundancy Clients to HSRP Groups

A Few Random UniverCD Links…

Posted July 26, 2006 by Josh
Categories: Documentation, Lab Solutions, Technologies

XML syslog:

Go to Release 12.4 -> Configuration Guides -> Network Management Configuration Guide -> System Monitoring and Logging -> XML Formatted System Logging Messages (XML Interface to syslog Messages)

Remember all those MIB groups for SNMP?

show snmp mib

questionmark.jpgUsing ‘?’ as a character:

Go to Release 12.4 -> Configuration Guides -> Terminal Services Configuration Guide -> Appendixes -> Regular Expressions

Scroll down to the additional information on the question mark!

Inventor of the multiprotocol router

Posted July 26, 2006 by boyarj
Categories: Fun

An interesting article about Bill Yeager:

http://www.networkworld.com/supp/2006/anniversary/032706-routerman.html

Cisco IOS Scheduling with Kron

Posted July 18, 2006 by Ross
Categories: Documentation, Tools

If you have an exec command that you would like to be run periodically, consider scheduling it with the Kron command. You can use this for creating a command(s) to get executed at a given time or interval. To do this, first enter a kron policy-list by using the global configuration command kron policy-list name, where name is the name of the policy-list you want to set up. Then in this mode, enter in cli command, where command is the exec command you would like to execute. Now, (optionally) type exit to get back to the global configuration mode. The second part of setting this up is to set up an occurrence. To do this, type kron occurrence name in minutes recurring, where name is the name of the occurrence, and minutes is the amount of time before the command gets executed. Read the rest of this post »

Extended access lists as prefix-lists

Posted July 13, 2006 by Ross
Categories: Documentation, Lab Solutions

A while back, Jason came across a funny looking extended access list, which contained a subnet mask as the destination address. This is not the one he came across, but an example using the same concept:

ip access-list 101 permit ip host 172.16.5.0 host 255.255.255.0

This may look strange at first, but it is actually not that complicated. When this is used in a route-map for filtering routes (with an application such as BGP) the source address becomes the route network and the destination address becomes the subnet mask (Doyle, V.II 190).

Read the rest of this post »

A Long FAT Network

Posted July 13, 2006 by Juan David
Categories: Lab Solutions, Technologies

At first I could not belive this myself, but it is true, long FAT networks are lurking arround.

Fatty networks are the ones with high levels of choresterol 😛 Just kidding.

This is just one of those things that I had to see for myself, AND because is a LONG FAT NETWORK wasn’t really hard to spot. 😀

I know, I know it’s a lot of buzz for just ONE command. (But could be worth 6 points!)

Here it is found:

IOS Release 12.4 / Configuration Guides / Application Services / TCP / TCP Window Scaling / Setting The TCP Window Size