Port security

Securitatea la switch de nivelul de tip acces

a) Port security

b) port protected

c) Port blocked

d) Acces la switch fara parola

e) Storm control

Distance Vector Routing Protocols

 

The meaning of Distance Vector:
A router using distance vector routing protocols knows 2 things:
Distance to final destination.
Vector, or direction, traffic should be directed.

CCNA 3 Intro

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.