Linux 9 - Working the Command Line

• Bash
  • Shell environment
  • PATH
  • environment variables
  • history
  • completion
• commands

Linux 7 - Debian Package Management

• dpkg
• dpkg-reconfigure
• APT
  • apt-get, apt-cache
  • configuration
• aptitude

Linux 5 - The Boot Manager

• LILO
• GRUB
• BackUP the MBR

Linux 4 – Hard Disk Layout

• Partitons and Disk
• Filesystems
• mount points
• swap space
• design considerations

Linux 2 - Boot The System

• BIOS
• Bootloader
• Kernel
• dmesg
• /var/log/messages
• init

Linux 1 – Hardware Settings and Configuring Settings

In order to have a better understanding of GNU Linux we would need to understand it’s ways of seeing the hardware devices attached to the system.

Spanning Tree Design

 

Optimizare topologie GNS3

Eficientizarea proceselor de cautare in tabela de rutare.

Configurare topologie simpla GNS3 partea a 3-a

CDP

Cisco Discovery Protocol

Network Security

Why is security important ?

Frame Relay

Definition

Frame relay este un protocol de comunicare de inalta viteza pentru retele WAN.

Beneficii:

• Latime de banda mai mare la un cost mai scazut
• Surplus de latime de banda pentru o perioada limitata (burst)
• Mai putin overhead
• Viteze intre 1,544 Mbps si 44,376 Mbps

Key Elements of 802.3/Ethernet Networks

VTP Pruning, Etherchannel, Port Blocking, Storm Control

1. VTP Pruning
2. Etherchannel (Introducere)
3. Lab Recapitulare (1 – 4)
4. Port Blocking
5. Storm Control

VTP

VLAN Trunking Protocol

Performante

 

In functie de cerinte CISCO are mai multe serii

Pentru Provider Core
7200, 7600, GSR-12000, CSR-1, CSR-3

Pentru Provider Edge
2800/2900, 3800/3900

Pentru nivelul Acces
800/1800/1900

Frame/Packet Format

IP Packet

Internet Protocol (IP) Packet Format

The Internet Protocol specified in RFC 791 defines the IP packet format. The IP packet header has specific fields that contain information about the packet and about the sending and receiving hosts. Below is a list of the fields in the IP header and a brief description for each one.

OSPF

Open Shortest Path First

• protocol de rutare link state
• direct competitor pentru EIGRP (proprietar CISCO)
• Protocol de rutare classless
• Scalabil prin folosirea de zone

Routing Table

Principles

1. Every router makes its decision alone, based on the information it has in its own routing table.

2. The fact that one router has certain information in its routing table does not mean that other routers have the same information.

3. Routing information about a path from one network to another does not provide routing information about the reverse, or return, path.