basic | bits

CDP

Sep 1, 2011 · 3 min read · ccna 2 gns3 configure basic cisco cdp commands info

Cisco Discovery Protocol - bun pentru obtinerea informatiilor de la alte routere sau swtich-uri direct conectate. - se trimit mesaje periodice (60s) - default pornit - contin informatii de genul: - tipul de device - interfetele cu care au legaturi - versiuni ale IOS - modelul device-ului Poate fi folosit ca un tool pe…

Configurare topologie simpla GNS3 partea a 2-a

Aug 31, 2011 · 6 min read · wireshark routes ccna 2 gns3 routing protocol configure basic protocols cisco part 2 commands

Continuarea configurarilor din topologia anterioara Obiective: Salvarea configuratilor (Topologie, Routere, PC-uri) Configurarea interfetei seriale de pe R2 Configurarea interfetei ethernet de pe R2 Altele Captura traficului prin Wireshark Salvarea configuratiilor Preambul: Routere/Switch-uri #copy running-confi…

Configurare topologie simpla GNS3

Aug 30, 2011 · 6 min read · routes ccna 2 linux routing protocol router hardware configure basic cisco commands

Topologie CCNA 2 3 routere 2 switch-uri simple 3 PC-uri Configurare adrese IP pentru host-uri sudo suhostname [nume]ifconfig eth0ifconfig eth0 <IP> netmask <NM> uproute add default gw <GW> eth0 Configurarea consolei si a liniilor virtuale VTY R1(config)#line console 0R1(config-line)#password ciscoR1(…

Network Security

Jul 10, 2011 · 6 min read · ccna 4 security SSH basic cisco commands info

Why is security important ? If the security of the network is compromised there could be seroious consequences such as: loss of privacy theft of information legal liabity As time went on, and attackers' methods and tools improved, attackers no longer required the same level of sophisticated knowledge. Common terms for…

Frame/Packet Format

Feb 7, 2011 · 2 min read · basic info

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 fo…

OSPF

Feb 6, 2011 · 10 min read · ccna 2 routing protocol configure basic ospf commands info

Open Shortest Path First protocol de rutare link state direct competitor pentru EIGRP (proprietar CISCO) Protocol de rutare classless Scalabil prin folosirea de zone Metrica valoare arbitrara denumita cost CISCO IOS foloseste bandwidth administrativ in calculul metricii Avantaje Convergenta mai rapida decat RIP (excep…

Configuring a router

Dec 5, 2010 · 3 min read · ccna 2 configure basic cisco commands

Basic Router Configuration When configuring a router, certain basic tasks are performed including: Naming the router Setting passwords Configuring interfaces Configuring a banner Saving changes on a router Verifying basic configuration and router operations The first prompt appears at user mode. User mode allows you t…