A computer network is a digital telecommunications network which allows nodes to share resources. In computer networks, computing devices exchange data with each other using connections between nodes. These data links are established over cable media such as wires or optic cables, or wireless media such as Wi-Fi.
Components of network – router, switch, hub, bridge etc
Types of Network – LAN, MAN, WAN, VPN, PAN & Content Network
Defining Network requirements – NIC- Ethernet (CSMA/CD)
Ethernet cabling Standard.
Fiber optics – Single/Multimedia
7 Layers – Communication between the Layers (Encapsulation & De-encapsulation) – PDU.
Layer 2 – MAC/LLC – 802.3/802.2 (SAP/SNAP) /Ethernet II – Frames
Broadcast/Collision domain – point of -Hub/Switch/Router
All Layers of TCP/IP Compound with – OS
Application Layer – TFTP/FTP/SMTP/TELNET/SNMP/DNS
Transport Layer – TCP/UDP – TCP Segment Format
3 way handshake/windowing – UDP segment Format
IP datagram format – Protocol No. – TCP 6 – UDP 17
Default Subnet Mask
Class C Subnetting & Practice no. given
Class B Subnetting & problems
Class A Subnetting & problems
Routers & Switches
Addressing
Routing and its Importance
EIGRP Capabilities and Attributes
Underlying Processes and Technologies
EIGRP Operation
EIGRP Tables
EIGRP Metric
Calculating the EIGRP Metric
Integrating the EIGRP and IGRP Routes
Configuring Basic EIGRP
Using a Wildcard Mask in EIGRP
Configuring the ip default-network Command
ip default-network Command
Verify EIGRP IP Routes
EIGRP Configuration,Verify EIGRP IP Operations
Route Summarization
Configuring Manual Route Summarization
Load Balancing Across Equal Paths
Configuring Load Balancing Across Unequal-Cost Paths
Variance
EIGRP Bandwidth Use Across WAN Links
Configuring EIGRP Bandwidth Use Across WAN Links
WAN Configuration—Frame Relay Hub-and-Spoke Topology
WAN Configuration–Hybrid Multipoint
Router Authentication
MD5 Authentication
Configuring MD5 Authentication
Verifying MD5 Authentication
Troubleshooting MD5 Authentication
Scalability in Large Networks
EIGRP Queries
EIGRP Stubs
Limiting Updates and Queries: Using EIGRP Stub
EIGRP stub Parameters
SIA Connections
Preventing SIA Connections
Graceful Shutdown
Link-State Routing Protocols
OSPF Area Structure
OSPF Adjacency Databases
Calculating the OSPF Metric
Link-State Data Structures
OSPF Neighbor Adjacencies
Exchanging and Synchronizing LSDBs
Maintaining Network Routes
Maintaining Link-State Sequence Numbers
debug ip ospf packet
Configuring Basic Single-Area and Multiarea OSPF
Configuring OSPF on Internal Routers of a Single Area
Configuring OSPF for Multiple Areas
Configuring a Router ID
Verifying the OSPF Router ID
Verifying OSPF Operation
The show ip route ospf Command
The show ip ospf interface Command
The show ip ospf neighbor Command
Introducing OSPF Network Types
Adjacency Behavior for a Point-to-Point Link
Adjacency Behavior for a Broadcast Network Link
Selecting the DR and BDR
Adjacency Behavior for an NBMA Network
OSPF over Frame Relay Configuration Options
Sample Configuration of a Router Using OSPF Broadcast Mode
OSPF over Frame Relay NBMA Configuration
neighbor Command
OSPF over Frame Relay Point-to-Multipoint Configuration
Point-to-Multipoint Configuration
Using Subinterfaces in OSPF over Frame Relay Configuration
Point-to-Point Sub interface
Multipoint Sub interface
OSPF over NBMA Topology Summary
Tracking OSPF Adjacencies
OSPF Router Types
OSPF Hierarchical Routing
OSPF Virtual Links
OSPF Virtual Link Configuration
show ip ospf virtual-links Command
OSPF LSA Types
Interpreting the OSPF LSDB and Routing Table
Interpreting the OSPF Database
Configuring OSPF LSDB Overload Protection
Changing the Cost Metric
OSPF Route Summarization
Using Route Summarization
Configuring OSPF Route Summarization
Route Summarization Configuration at ABR
Route Summarization Configuration at ASBR
Benefits of a Default Route in OSPF
Default Routes in OSPF
Configuring a Default Route in OSPF
Default Route Configuration
Configuring OSPF Area Types
Configuring Stub Areas
Configuring Totally Stubby Areas
Interpreting Routing Tables
Routing Table in a Standard Area
Routing Table in a Stub Area
Routing Table in a Stub Area with Summarization
Routing Table in a Totally Stubby Area
Configuring NSSAs
Types of Authentication
Configuring Simple Password Authentication
Troubleshooting Simple Password Authentication
Configuring MD5 Authentication
Verifying MD5 Authentication
Troubleshooting MD5 Authentication
Using Multiple IP Routing Protocols
Defining Route Redistribution
Using Seed Metrics
Configuring Redistribution
Redistributing Routes into RIP
Redistributing Routes into OSPF
Redistributing Routes into EIGRP
Redistributing Routes into IS-IS
Verifying Route Redistribution
Configuring a Passive Interface
Configuring Route Filtering Using Distribute Lists
Implementing the Distribute List
Defining Route Maps
Using route-map Commands
Implementing Route Maps with Redistribution
Defining Administrative Distance
Modifying Administrative Distance
Describing the Purpose of DHCP
Understanding the Function of DHCP
Configuring DHCP
Configuring the DHCP Client
Explaining the IP Helper Address
Configuring DHCP Relay Services
Using BGP in an Enterprise Network
BGP Multihoming Options
BGP Routing Between Autonomous Systems
BGP Is Used Between Autonomous Systems
AS Numbers
Comparison with IGPs
Path-Vector Functionality
Features of BGP
BGP Message Types
BGP Neighbor Relationships
Establishing EBGP Neighbor Relationships
Establishing IBGP Neighbor Relationships
IBGP on All Routers in Transit Path
IBGP in a Transit AS
IBGP in a Nontransit AS
TCP and Full Mesh
Initiate Basic BGP Configuration
Activate a BGP Session
The BGP neighbor Command
Shutting Down a BGP Neighbor
BGP Configuration Considerations
Identifying BGP Neighbor States
Authenticating in BGP
Troubleshooting BGP
Characteristics of BGP Attributes
AS Path Attribute
Next-Hop Attribute
Origin Attribute
Local Preference Attribute
MED Attribute
Weight Attribute
Determining the BGP Path Selection
Selecting a BGP Path
Path Selection with Multihomed Connection
Setting Local Preference with Route Maps
Setting the MED with Route Maps
Implementing BGP in an Enterprise Network
Introduction to IPv6
Describing IPv6 Features
Describing IPv6 Addressing Architecture
Defining Address Representation
IPv6 Address Types
Multiple ISPs and LANs with Multiple Routers