Showing posts with label ICND1 break down. Show all posts
Showing posts with label ICND1 break down. Show all posts

Ethernet over MPLS

›
Back> Fiber optics allows the ethernet cable to connect nodes tens of miles apart. It is long enough to cover the distance from the cus...

ISP, POP, NSP, NAP, MAE, IXP

›
Back> The following diagram is an overall architecture of internet. You home PC connects to a home LAN, your home LAN then connects t...
9 comments:

How to setup WAN at home

›
LAN and WAN are similar layer 1 and layer 2 technology. Small company usually use a leased line to connect the LANs in their branch offices ...

WAN trouble-shooting commands

›
Back> Let's talk a little bit about IOS commands for WAN trouble-shooting. To verify the physcial cable connection on the routers, ...

public switched telephone network (PSTN)

›
The  public switched telephone network ( PSTN ) is the network of the world's public circuit-switched telephone networks, in much the s...

What is a WAN

›
Back> What is a WAN? Wide Area Network (WAN) is a computer network that covers a broad geographical area. On the contrary, Local Area...
1 comment:

Switch/Router Interfaces and Physical Ports

›
ICND1 and ICND2 break down In this section, we will talk about the various interfaces and their corresponding physical ports on the cisco ...
5 comments:

Basic Router Management Commands

›
ICND1 and ICND2 break down In this section, we will talk about the basic management commands for the router. Most commands we learned in s...
7 comments:

enable password vs enable secret

›
Back> The following is a citation from a cisco document . Conclusion: don't use enable password , use enable secret instead. Passw...

Cisco IOS software overview

›
ICND1 and ICND2 break down Cisco IOS software is the embedded software architecture in all Cisco devices and is also the operating syst...

Host-to-Host communication

›
Back> So far, we have learned how the Transport layer protocols UDP and TCP work, we also learned that both Network Layer addresses (th...

Host-to-Host communication through a Switch

›
In this section, we will put together what we have learned so far by looking into the host-to-host IP communications through a switch.     H...

Ethernet LAN Segments

›
Back> A Ethernet LAN segment is a network connection made by a single unbroken network cable. The network cable have a length limit, be...
1 comment:

Ethernet Frame

›
Back> The data link layer Protocal Data units (PDU) is frame. A frame contains the bits that are transmitted over an Ethernet LAN. The ...
6 comments:

What is a LAN ?

›
Back> LAN stands for Local Area Network, it is a network of computers and other components located relatively close together in a limit...

TCP/IP Applications

›
ICND1 and ICND2 break down We have walked through the OSI model and TCP/IP model in the previous sections. We studied TCP, UDP in detail. ...

UDP Header

›
The following is UPD segment structue. bits 0 - 15 16 - 31 0 Source Port Destination Port 32 Length Checksum 64  Data  The UDP header consis...

TCP Header

›
TCP segment structure Bit offset 0–3 4–7 8–15 16–31 0 Source port Destination port 32 Sequence number 64 Acknowledgment number 96 Data offse...

IP and ICMP protocols

›
Back> IP protocal resides in Network Layer, which provide service to the Transport Layer protocals TCP and UDP. IP packet structure ...
1 comment:

CIDR network address

›
Back> subnetting supernetting As the growth of public networks, we are facing shortage of the 32-bit IPv4 addresses. The Cla...