Book Name: Home Networking For Dummies, 4th Edition
Author: Kathy Ivens ISBN-10: 0470118067 Year: 2007 Pages: 363 Language: English File size: 4.9 MB File format: PDF
Home Networking For Dummies Book Description:
Having a network in your home increases work efficiency and minimizes confusion. If you want to set up a network in your home but you’re not quite sure where to start, then Home Networking for Dummies makes it easy for you to become your household’s network administrator. Now fully updated with information on the newest technology in networking available, this quick and to-the-point walkthrough will show you how to install Web connections in your entire home, whether by wires, cables, or WiFi.
This resourceful guide illustrates:
With Cisco Networking All-in-One For Dummies, they are! This expansive reference is packed with all the information you need to learn to use Cisco routers and switches to develop and manage secure Cisco networks.
Along with the basics, this book introduces fun ways to use your network, including sharing music, keeping shopping lists, creating photo albums, setting up a family budget, and instant messaging. It also provides ways to keep your network safe for kids, such as talking to your child about the Internet, creating site filters, and ISP E-mail filtering features. With this trusty guide your home will be fully connected and you’ll be working more efficiently in no time!
To create and configure a Cisco network, you need to know about routers and switches to develop and manage secure Cisco systems. Become acquainted with Cisco network devices and code listings; and find out how to manage static routing and view routing information.
OSI Model for Cisco Networking
While you may not use the OSI model every day, you should be familiar with it, specifically when working with Cisco switches and routers (which operate at Layer 2 and Layer 3, respectively). Here are some of the items that operate at each level of the OSI model:
How to Configure a Cisco Network
Like all networks, a Cisco network needs to be properly configured. To do so, you need to know the configuration modes to use when configuring your network. You also should know how to configure an interface, configure a switch management interface, and configure an interface to use DHCP for your Cisco network.
Configuration modes for Cisco networking
When moving around in the Cisco IOS, you will see many prompts. These prompts change as you move from one configuration mode to another. Here is a summary of the major configuration modes:
Configure an interface for Cisco networking
When working with routers in particular, but also when dealing the management interface on switches, you will often need to configure network interfaces which will either match physical interface ports or virtual interfaces in the form of a virtual LAN (VLAN) interface (when dealing with switches).
For your router interfaces the following example will set speed, duplex and IP configuration information for the interface FastEthernet 0/0 (notice the interface reference as slot/port). In the case of the router, the interface is enabled using the no shutdown command in the final step; interfaces on switches are enabled by default.
Configure a switch management interface for Cisco networking
For your switches, to enable an IP address on your management interface, you will use something similar to this example. In this example, management is being performed over VLAN 1 – the default VLAN.
Configure an interface to use DHCP for Cisco networking
If you want to configure either a router or switch to retrieve its IP configuration information from a network Dynamic Host Configuration Protocol (DHCP) server, then you can commands like the following example.
Creating a VLAN for Cisco Networking
When working with your Cisco network, you may want to separate users into different broadcast domains for security or traffic reduction. You can do this by implementing VLANs. The following example will create VLAN (VLAN2) and place the ports on a switch (from 1-12) into VLAN2.
If you are connecting two switches together, then you will want to allow all configured VLANs to pass between the two switches. This is accomplished by implementing a trunk port. To configure port 24 on your switch to be a trunk port, you will use the following code:
Using EtherChannel for Cisco Networking
Don’t be afraid to use EtherChannel on your Cisco network. EtherChannel allows you to take up to eight network ports on your switch and treat them as a single larger link. This can be used to connect servers with multiple network cards that are bonded (or teamed) to a switch, or to connect multiple switches together. There are two main negotiation protocols, Port Aggregation Protocol (PAgP) which is a proprietary Cisco protocol and Link Aggregation Control Protocol (LACP) which is an open standards protocol.
To set EtherChannel to use with of the protocols you will configure it to support one of the following modes.
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The following example will configure EtherChannel to use group ports 11 and 12 on the switch together using PAgP as the protocol. The same type of command would be used on the switch to which Switch1 is connected.
Working with Spanning Tree Protocol for Cisco Networking
Spanning Tree Protocol (STP) enables you to create redundant loops on your Cisco network for fault tolerance, and prevents inadvertent loops that may be created on your network from bringing the network to its knees.
The following code will enable the Cisco proprietary Rapid Per VLAN Spanning Tree Protocol (PVST) over the open standard of Multiple Spanning Tree Protocol (MSTP). In addition to configuring STP on the switch, you will also configure port 2 on the switch for portfast, which allows the port to immediately transition to forwarding mode.
Managing Static Routing for Cisco Networking
Lenovo network controller driver edge e520 reviews. When working with your routers on your Cisco network, it’s very likely that you’ll want to have your routers route data. The first step in having your router pass data from one interface to another interface is to enable routing; just use these commands.
Whether or not you choose to use a dynamic routing protocol, you may add static routes to your router. The following will add a static route to Router1 to send data to the 192.168.5.0/24 network using the router with the IP address of 192.168.3.2.
Managing routing information protocol for Cisco networking
Routing Information Protocol (RIP) is widely used, with version 2 allowing you to use Variable Length Subnet Masks (VLSM) across your network. The following code will enable routing, enable RIP, set RIP to version 2, disable route summarization, defines the distributed network from this router as 192.168.5.0/24, and rather than broadcasting routes, it will send RIP data directly to 192.168.1.1.
Managing enhanced interior gateway routing protocol for Cisco networking
Enhanced Interior Gateway Routing Protocol (EIGRP) is the updated version of IGRP. The following code will enable EIGRP using an autonomous-system (AS) number of 100, distribute two networks and disables auto summary.
Managing open shortest path first for Cisco networking
Open Shortest Path First (OSPF) is a link state protocol which is widely used. OSPF uses the address of the loopback interface as the OSPF identifier, so this example will set the address of the loopback interface, then enable OSPF with a process ID of 100, and distributing a network of 192.168.255.254 and a network of 192.168. 5.0/24
Viewing Routing Information for Cisco Networking
After setting up any routing protocol that you want to implement – RIP, OSPF, or EIGRP – you can view all of your routing information through the ip route command. The following is an example of the output of this command. The output includes a legend showing the codes for each routing protocol, and the specific routes are identified by the source protocol.
Securing a Cisco Network![]() Free Download Torrent Movies
Security is always a concern, and your Cisco network needs to be properly secured. In the following sections, you see how to secure your Cisco network by configuring NAT, by configuring an ACL, and by applying that ACL.
Securing your Cisco network by configuring NAT
The following commands are used to configure NAT overload services on a router called Router1. In this example, a list of source address is created in access list #1, which is then used as the inside source list. The FastEthernet 0/0 port is the overloaded public address port that all inside addresses get translated to.
Securing your Cisco network by configuring an access control list (ACL)
ACLs are used to control traffic flow. They can be used allow or deny the flow of traffic. The two main types of ACLs are:
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To create a standard ACL, you can use the following example which will create an ACL that allows traffic for the 192.168.8.0/24 network.
To create an extended ACL you can use the following example which will create an ACL that allows traffic with addresses in the 192.168.8.0/24 network and tcp ports of either 80 (http) or 443 (https):
Securing your Cisco network by applying an access control listCisco Call Manager For Dummies
After you have created an Access Control List (ACL), such as ACL 101 created above, you can apply that ACL to an interface. In the following example, this ACL is placed to restrict outbound traffic on FastEthernet0/1.
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