1.Command to set the clock
# clock set 10:45:00 1 June 2011
2.To verify the new clock setting type.
# show clock
3.The show version command is used for following purposes.
# Determine the router software version.
# Determine the amount of time the router has been running (uptime).
# Determine what types of interface the router has.
# Determine the configuration register value.
# Determine how much RAM the router has
4.Type terminal history size 5 to set the command history size to 5.
5.Type show terminal to see the terminal history size.
6.Type show history to view your last five commands
7.Type terminal no history to disable the command history but Confusingly, no terminal history size resets this to the default, which is 10 commands.
8.Type show flash to verify the amount of free flash memory you have.
9.Type copy flash tftp to backup your IOS image to a TFTP server.
10.Type show cdp to see the global CDP information.
11.Type show cdp neighbors to view connected devices.
Note what information is displayed.
Hostname, local interface, capability, platform, neighbor's device port Id
12.If you want to find out more information on each directly connected device type sh cdp neighbors detail
13.To display just IP addresses of each directly connected device type show cdp entry * protocols
14.To display the IOS versions of each directly connected device type show cdp entry * version
15.Note: show cdp neighbors detail has the same output as show cdp entry *
16.Blocking == No frames forwarded, BPDUs heard
Listening == No frames forwarded, listening for frames
Learning No frames forwarded, learning addresses
Disabled No frames forwarded, no BPDUs heard
17.802.11b == 2.4GHz, 11Mbps
18.ROM monitor == Used for testing and troubleshooting
19.Protocol used to update switches about new or old VLANs==VLAN Trunk Protocol (VTP)
20.802.11a == 5GHz, 54Mbps
21.1000BaseLX == Single-mode fiber, uses a 9-micron core, from 3 KM - 10 KM.
22.Protocol that allows multiple routed protocols to be transported across point-to-point links==Network Control Protocol (NCP)
23.Used to identify which frame belongs to which VLAN == Frame tagging
24.802.11n == 2.4GHz or 5GHz, 300Mbps
25.WEP == Original IEEE wireless security standard. Easily hacked.
26.WPA Wireless security standard created by the Wi-Fi Alliance. Uses a dynamic key for greatly improved security over WEP. Interoperable with different vendors products.
27.WPA-2 Ratified by the IEEE in 2005 who named it IEEE 802.11i. Uses AES encryption.
28.Serial encapsulation to use to connect to a non-Cisco router PPP for serial links
29.Command to display hosts table == show hosts
30.802.11g == 2.4Ghz, 54Mbps
# clock set 10:45:00 1 June 2011
2.To verify the new clock setting type.
# show clock
3.The show version command is used for following purposes.
# Determine the router software version.
# Determine the amount of time the router has been running (uptime).
# Determine what types of interface the router has.
# Determine the configuration register value.
# Determine how much RAM the router has
4.Type terminal history size 5 to set the command history size to 5.
5.Type show terminal to see the terminal history size.
6.Type show history to view your last five commands
7.Type terminal no history to disable the command history but Confusingly, no terminal history size resets this to the default, which is 10 commands.
8.Type show flash to verify the amount of free flash memory you have.
9.Type copy flash tftp to backup your IOS image to a TFTP server.
10.Type show cdp to see the global CDP information.
11.Type show cdp neighbors to view connected devices.
Note what information is displayed.
Hostname, local interface, capability, platform, neighbor's device port Id
12.If you want to find out more information on each directly connected device type sh cdp neighbors detail
13.To display just IP addresses of each directly connected device type show cdp entry * protocols
14.To display the IOS versions of each directly connected device type show cdp entry * version
15.Note: show cdp neighbors detail has the same output as show cdp entry *
16.Blocking == No frames forwarded, BPDUs heard
Listening == No frames forwarded, listening for frames
Learning No frames forwarded, learning addresses
Disabled No frames forwarded, no BPDUs heard
17.802.11b == 2.4GHz, 11Mbps
18.ROM monitor == Used for testing and troubleshooting
19.Protocol used to update switches about new or old VLANs==VLAN Trunk Protocol (VTP)
20.802.11a == 5GHz, 54Mbps
21.1000BaseLX == Single-mode fiber, uses a 9-micron core, from 3 KM - 10 KM.
22.Protocol that allows multiple routed protocols to be transported across point-to-point links==Network Control Protocol (NCP)
23.Used to identify which frame belongs to which VLAN == Frame tagging
24.802.11n == 2.4GHz or 5GHz, 300Mbps
25.WEP == Original IEEE wireless security standard. Easily hacked.
26.WPA Wireless security standard created by the Wi-Fi Alliance. Uses a dynamic key for greatly improved security over WEP. Interoperable with different vendors products.
27.WPA-2 Ratified by the IEEE in 2005 who named it IEEE 802.11i. Uses AES encryption.
28.Serial encapsulation to use to connect to a non-Cisco router PPP for serial links
29.Command to display hosts table == show hosts
30.802.11g == 2.4Ghz, 54Mbps
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