Term
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Definition
| The Read-Only Memory (ROM) on a Cisco device is like the ROM on a computer in the sense that it stores the POST and the boot loader program. The boot loader program is responsible for locating the IOS. |
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Term
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Definition
| RAM is used to store things like the routing table on a router, or the MAC address table on a switch. It is also used to store the running-config. RAM is also known as volatile RAM, or VRAM. |
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Term
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Definition
| Non-volatile RAM (NVRAM) is used to store the startup-config, which is copied to the running-config on bootup after the IOS is loaded. |
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Term
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Definition
| The first thing that occurs when a Cisco device boots up is the POST routine, which is responsible for performing a self diagnostic to verify everything is functioning on the router or switch. |
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Term
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Definition
DESCRIPTION:
Responsible for initiating or services the request.
EXAMPLE:
SMTP, DNS, HTTP, and Telnet |
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Term
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Definition
DESCRIPTION:
Formats the information so that it is understood by the receiving system.
EXAMPLE:
Compression and encryption depending on the implementation |
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Term
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Definition
DESCRIPTION:
Responsible for establishing, managing, and terminating the session.
EXAMPLE:
NetBIOS |
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Term
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Definition
DESCRIPTION:
Breaks information into segments and is responsible for connection and connectionless communication.
EXAMPLE:
TCP and UDP |
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Term
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Definition
DESCRIPTION:
Responsible for logical addressing and routing
EXAMPLE:
IP, ICMP, ARP, RIP, IGRP, and routers |
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Term
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Definition
DESCRIPTION:
Responsible for physical addressing, error correction, and preparing the information for the media
EXAMPLE:
MAC address, CSMA/CD, switches, and bridges |
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Term
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Definition
DESCRIPTION:
Deals with the electrical signal.
EXAMPLE:
Cables, connectors, hubs, and repeaters |
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Term
| CMD's for enabling secret pw. |
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Definition
R1>enable
R1#config term
R1(config)#enable secret mysecret |
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Term
| CMD's to secure console port. |
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Definition
R1>enable
R1#config term
R1(config)#line con 0
R1(config-line)#password conpass
R1(config-line)#login |
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Term
| CMD's to secure aux port. |
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Definition
R1>enable
R1#config term
R1(config)#line aux 0
R1(config-line)#password auxpass
R1(config-line)#login |
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Term
| CMD's to secure vty ports. |
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Definition
R1>enable
R1#config term
R1(config)#line vty 0 15
R1(config-line)#password vtypass
R1(config-line)#login |
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Term
| CMD's to require authentication. |
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Definition
R1>enable
R1#config term
R1(config)#username glen password glenpass
R1(config)#line con 0
R1(config-line)#login local
R1(config)#line vty 0 15
R1(config-line)#login local |
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Term
| CMD's to add login Banner. |
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Definition
R1(config)#banner motd #
Enter TEXT message. End with the character '#'.
This device is for authorized personnel only.
Please disconnect at once if you have not been given permission to access this device
#
R1(config)# |
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Term
| CMD's to change device name. |
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Definition
Router>enable
Router#config term
Router(config)#hostname R2 |
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Term
| CMD's to configure FastEthernet port on router. |
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Definition
R2(config)#interface f0/0
R2(config-if)#ip address 25.0.0.1 255.0.0.0
R2(config-if)#description Private LAN
R2(config-if)#speed 100
R2(config-if)#duplex full
R2(config-if)#no shutdown |
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Term
| CMD's to configure Serial interface for router. |
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Definition
R1>enable
R1#config term
R1(config)#interface serial 0/0
R1(config-if)#ip address 24.0.0.1 255.0.0.0
R1(config-if)#encapsulation hdlc
R1(config-if)#clock rate 64000 (only set for DCE device)
R1(config-if)#no shutdown |
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Term
| CMD's to configure hostname table |
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Definition
R1>enable
R1#config term
R1(config)#interface serial 0/0
R1(config-if)#ip address 24.0.0.1 255.0.0.0
R1(config-if)#encapsulation hdlc
R1(config-if)#clock rate 64000 (only set for DCE device)
R1(config-if)#no shutdown |
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Term
| CMD's to enable DNS lookup. |
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Definition
NY-R1>enable
NY-R1#config term
NY-R1(config)#ip domain-lookup
NY-R1(config)#ip name-server 23.0.0.200
NY-R1(config)#ip domain-name gleneclarke.co |
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Term
| CMD's to configure DHCP Lease pool. |
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Definition
NY-R1(config)#ip dhcp pool NY_Network
NY-R1(dhcp-config)#network 23.0.0.0 255.0.0.0
NY-R1(dhcp-config)#default-router 23.0.0.1
NY-R1(dhcp-config)#dns-server 23.0.0.200
NY-R1(dhcp-config)#lease 7 0 0
NY-R1(dhcp-config)#exit
NY-R1(config)#ip dhcp excluded-address 23.0.0.1 23.0.0.15 |
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Term
| CMD's to configure NAT overload. |
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Definition
NY-R1(config)#Access-list 1 permit 10.0.0.0 0.255.255.255
NY-R1(config)#ip nat inside source list 1 interface FastEthernet 0/0 overload
NY-R1(config)#interface FastEthernet0/0
NY-R1(config-if)#ip nat outside
NY-R1(config-if)#interface FastEthernet0/1
NY-R1(config-if)#ip nat inside |
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Term
| CMD's to show mac address table. |
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Definition
| Switch#show mac-address-table |
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