Cisco CCNA Notes

CCNA - Layer 2: CISCO IOS Lab (Part 3) Changing the Router Login

Layer 2: CISCO IOS Lab (Part 3) Changing the Router Login Changing console port login: r1 (config)# line console 0 – takes you to console port configuratio r1 (config-line)# exec -timeout 2 20 (disconnect the console connection after 2 mins an [view]

By: dwatts8286 | Related Lesson: Layer 2 - Cisco IOS LAB (Part 3) Changing the Router Log | Modified: March 25, 2018

CCNA - Layer 2: CISCO IOS Lab (Part 2) OS Modes

Layer 2: CISCO IOS Lab (Part 1) router# conf t – takes you to global configuration mode router(config)# end or ctrl-Z take you back to priv mode router#ldlfkgklfgkljfgljk get back message: translating ”xxxxx” … domain server [view]

By: dwatts8286 | Related Lesson: Layer 2 - Cisco IOS LAB (Part 2) OS Modes | Modified: March 25, 2018

osi

The physical layer deals with tangible objects, devices you can touch. Like cable, hubs, repeaters. Every thing below it. Both a device that operates at a higher level can operate at a layer above it. Example of this is the switch that operates at th [view]

By: davienok105 | Related Lesson: Layer 1 - Physical Layer | Modified: March 25, 2018

OSI model

OSI model is made of seven leyer 1. physical 2 datalink  3 Transport  4 Session  5 Presentation 6 Application layer [view]

By: davienok105 | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: March 25, 2018

layer 2

layer 1  – Electrical signal Layer 2 – Structure signal (PDU , frame) MAc address – media  access control address 48 bits first 24 bits of a mac address is the OUI feild – organizational unit interface ( Vendor specific as p [view]

By: fouz | Related Lesson: Layer 2 - Data Link Layer Overview | Modified: March 25, 2018

phycal layer 1

physical layer –cables (ethernet cables) –hub — twisted pair 1 straight through cable – conected computer to router, hub, modem.. 2 crossover cables – connected pc to pc, router to router…. pc to router uses crosso [view]

By: Shoot2020 | Related Lesson: Layer 1 - Physical Layer | Modified: March 25, 2018

L2-BROADCAST DOMAINS

BROADCAST-HOW FAR A BROADCAST FRAME WOULD GO WHEN SENT BY A DEVICE ;  SWITCH/HUBS = ONE BROADCAST DOMAIN, ROUTER = EACH PORT IS A BROADCAST DOMAIN AREA ON A NETWORK WHERE COLLISION CAN OCCUR; Hubs = One big collision domain(half duplex) Switch/Route [view]

By: YawKofi | Related Lesson: Layer 2 - Broadcast Domains | Modified: March 25, 2018

OSI 7 Layer

OSI 7 Layer 1.Physical Layer 2.Data Link Layer 3.Network Layer 4.Transport Layer 5.Session Layer 6.Presentation Layer 7.Application Layer [view]

By: pyaephyothu | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: March 25, 2018

CCNA Mar 25/2018 OSI Intro

OSI – Open Systems Interconnect Model: Rules that dictate how networks communicate. 7 Layers:  Physical Data Link Network Layer Transport Layer Session Layer Presentation Layer Application Layer [view]

By: deidreannandy | Related Lesson: Open Systems Interconnect Model (OSI) Introduction | Modified: March 25, 2018

L3: Serial link lab

encapsulation: High level data link layer control (HDLC) serial interfaces do not have MAC addresses to figure which side is the DCE and which is the DTE we use the command: show controller serial [0/0/0] to configure the clock rate on the DCE sid [view]

By: miraNAJ | Related Lesson: Layer 3 - Serial Link LAB | Modified: March 25, 2018

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