Virtual Local Area Network
Sunday, March 06, 2011
Sunday, February 27, 2011
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
Monday, February 21, 2011
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.
Thursday, February 17, 2011
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
Monday, February 07, 2011
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.
Sunday, February 06, 2011
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
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