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Performante

Feb 17, 2011 · 2 min read · ccna 2 info

In functie de cerinte CISCO are mai multe serii Pentru Provider Core7200, 7600, GSR-12000, CSR-1, CSR-3 Pentru Provider Edge2800/2900, 3800/3900 Pentru nivelul Acces800/1800/1900 Se mai tin cont de: Interfete fiziceThroughputUpgradeabilitate O interfata de retea poate avea o latime de banda de 10Gbp/s. Este bin…

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…

Routing Table

Jan 16, 2011 · 3 min read · routes rib ccna 2 cisco info

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 pr…

Routers

Jan 16, 2011 · 3 min read · router links router hardware ccna 2 cisco

Cisco IOS will not allow two active interfaces on the same router to belong to the same network. LAN Interfaces Ethernet interface also has a Layer 2 MAC address and participates in the Ethernet LAN in the same way as any other hosts on that LAN. For example, a router Ethernet interface participates in the ARP process…

Verifying Basic Router Configuration

Dec 22, 2010 · 5 min read · troubleshoot ccna 2 cisco commands

These commands are for viewing and debugging the configuration #show running-config This command displays the current running configuration that is stored in RAM. With a few exceptions, all configuration commands that were used will be entered into the running-config and implemented immediately by the IOS. R2#show run…

Routing protocols

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

Some stuff about static and dynamic routing protocols, and IP assignment to interfaces. Directly connected: When configuring an interface with an IP address that interface will become a host on that network (it will have it’s own ip address) Before any static or dynamic routing is configured on a router, the router on…

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…