R/S Chapter 5 Start

Chapter 5 will be covering the following:

The Cisco IOS boot process in detail. 

Will also be going over backing up which includes the IOS and the config files. 

And last, CDP- Cisco Discovery Protocol. 





Notes after the break.

R/S: Cisco Router IOS Start

9/17 notes- Cisco Routing

Cisco Router IOS

How do I access my router?

Physical – hooking up a wire and logging into the device

Remote- using SSH or TelNet to log in remotely

How do I configure my router?

Console Port

            Designated by a light blue color and label

            Console cable has one RJ45 port and one Serial port.  The RJ45 goes into the router, serial into the computer. 

Via modem using an aux port – only found on older routers

Virtual terminal

Tftp server

R/S: Troubleshooting

Don’t do things in random order, but a set of steps.

First step is to define the problem.  Try to isolate the problem. 

Four step troubleshooting:

1 Ping loopback address- trying to isolate the problem Ping 127.0.0.1 When you ping the loopback, you are checking if the TCP/IP software is on the computer, available and working correctly.  There is always a file on the computer that has the loopback address, and if that folder is deleted, the network connections will not work correctly.

2 ping ip address of the local system (192.168.40.10)  When pinging the local system, you are checking if the NIC is working or not.  If these two steps are successful, you know that the user’s machine is ok. 

3 Ping the default gateway ex: ping 192.168.40.1.  A default gateway is the router, which is your translator between the inside network and your outside network. 

4 ping a system outside your local network- google, yahoo, ect.  At this point, we know that the local system is ok, now we are looking to the outside network for the issue.

***These are the specific order that has to be done on the tests and the CCENT test***

More After the Break

R/S Subnetting Videos

Subnetting Made Easy pt 1

Subnetting Made Easy pt 2

Routing/Switching: Review Notes

**All notes with the CSIT 2750 Routing/Switching tag and labeled R/S are derived from Nathawat Laxman's classes.  If you wish to use any of these notes, you must give credit to him, as this is his work, not mine, not something out of a textbook** 

Most of this is going to be a review of my notes from the Network Fundamentals class.  Over time, I may add links to videos on subnetting as well.

Segments of Original Notes

More after the break