Cisco CCNA Notes


data link layer network layer transport layer these layer is where the ccna professionals will work session ans presentation layer is based on programming,   [view]

By: sushmi.J | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: June 15, 2016


bpdu  fileds :-(bridge protocol data unit) root bridge id = priority + mac  root path cost sender bridge id sender port id   stp decision process     lowest bridge id    lowest path cost    lowest sender bridge id    lowest sender por [view]

spanning tree stare

blocking   20 sec. listening   15 sec. also called forwared delay learning    15 sec.  also called forwared delay  forwarding   [view]

By: mitulbhanushali | Related Lesson: Layer 2 - Spanning Tree Protocol (Part 3) Root Ports | Modified: June 15, 2016

LAB Trunk Conf.

Module 3 Layer 2 Data Link [view]

By: willy raap | Related Lesson: Layer 2 - VLAN Configuration LAB | Modified: June 15, 2016

numbers of VLANS

vlans 1 – 1494 = 1450 VLANS VLANS 1001-1005 = Normal Range VLANS VLANS 1006-1494 = Extended Range of VLANS switch#VLAN Database switch (vlan)# vlan 50 name test switch (vlan)= exit switch#show vlan brief New Method Switch (config)#vlan 100 swit [view]

By: Mahendra Subedi | Related Lesson: Layer 2 - Virtual Local Area Connections | Modified: June 14, 2016


repeater amplify it 100 m. Hub is nothing more than a repeater with lots of hosts connected to it. Hub sends the signal out or flood the network out all port except the port which originated. [view]

By: Marcus.Flynn | Related Lesson: Layer 1 - Physical Layer | Modified: June 14, 2016

OSI MODEL (Open System Interaconnect Model)

OSI MODEL Layers Layer 7 Application Layer 6 Presentation – Protocols: DNS Layer 5 Session – Protocols: Layer 4 Transport – Protocols: TCP/UDP Layer 3 Network  – Protocols: IP Layer 2 Data Link -Protocols: Ethernet, PPP,ARP L [view]

By: Marcus.Flynn | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: June 14, 2016


Connects/Control the comm between onedevice and the immediate next device. MAC Add (48 bits- Hex no’s-1-9, A-F)  involve = First 24bits are OUI Field abd cannot be chnaged and are Vendor specific = 7 bit is the most significant bit and if its [view]

By: raj27 | Related Lesson: Layer 2 - Data Link Layer Overview | Modified: June 14, 2016

study notes

two ways to login into a device Console port is one way to login to a device to make changes to a port you must go into a port  r1 (config) # line console 0 is how you login into the console port r1 (config-line) # when changes are made it only ef [view]

By: coford | Related Lesson: Layer 2 - Cisco IOS LAB (Part 3) Changing the Router Log | Modified: June 14, 2016

ios 1

IOS = cisco os 3 types of memories in cisco routers and switches: RAM – holds the running confoguration NVRAM – non volatile ram – holds the startup configuration. Saved config persist (like hdd) Flash memory – holds the OS(I [view]

By: b3Nk0 | Related Lesson: Layer 2 - Cisco IOS LAB (Part 1) | Modified: June 14, 2016

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