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قديم 11-20-2013, 02:12 PM   #1
khalid alghamdi
:: سيسكو جديد ::
 
تاريخ التسجيل: Feb 2013
المشاركات: 15
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khalid alghamdi will become famous soon enough
Smile لمحة حول نظام التشغيل ios ومحتويات الراوتر


CISCO IOS


Internetwork Operating System


-operating system used within routers & switches
Router use IOS to boot-up



*Memories in router:


1. ROM: read only memory
Post: power on self test : used to check all the hardware components .
Boot strap: small program used to help in load IOS from.


2. flash memory: contain the IOS.
3. NV-RAM: non volatile –random access memory:
Used to save the running configurations.
Called running-config


*Router Ports:

1. console port:

Used to access & configure the router
Monitoring
RJ45<Router -------Pc\laptop >com port
#Start menu <Run<hyperterm((hyper terminal)) on WIN XP
WIN 7 or VISTA you can use SECURE CRT or another program.


2. Auxiliary port (AUX):
As function = same as console port.
Backup for console port.
In normal conditions it doesn’t work
3. Ethernet port:
Is the port which used with LAN’s
Ethernet: 10 Mbps
Fast Ethernet: 100 Mbps
Giga Ethernet: 1000 Mbps


4.serial port:
used to connect with another router
used to connect with ISP
it has tow type : normal and smart port
*Router interfaces:
1. Roll over cable (console cable)
Used with console port.


2. Ethernet cables:
Used with LAN connections.


A:straight through : used with a different device.
B: cross-over: used with a same device.


3. serial cables:
Used with serial ports
Have a tow ends:
A. DCE: data communication equipment__ use to configure the speed of the connection (MASTER)
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B. DCE : data terminal equipment__will use speed that been specified from DCE.(slave)



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