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Cisco Device Configuration Commands (NET-126) Cheat Sheet by

commands     intermediate     cisco     networking     network     configuration     ios     switch     router

General Config­ura­tions

Comm­and
Mode
Func­tion
terminal history size 200
priv. EXEC
changes the # of cmds the history buffer stores (for this session only)

Protocol Config­ura­tions

Comm­and
Mode
Func­tion
router [protocol]
global
enables dynamic routing protocol & enters router config mode
aut­o-s­umm­ary
router
enables automatic network # summar­ization
default-information
router
controls distri­bution of default info
network [ip-address]
router
enables routing on a network
passive-interface g0/1
router
disables routing updates on that interface
ver­sion [version]
router
sets protocol version

Refresher Commands: General

Short Command
Complete Command
Mode
no ip dom lo
no ip domain­-lo­okup
global
login blo 120 a 3 w 60
login block-for 120 attempts 3 within 60
global
security pass min 8
security password min-length 8
global
exe­c-t­imeout 10
exec-­timeout 10
line
 

Routing Table

Comm­and
Mode
Func­tion
interface loopback 0
global
loopback address configuration
ip route [network] [subnet] [exit-int|next-hop]
ipv6 route [network/prefix] [exit-int|next-hop]
global
configs a static route
ip route 0.0.0.0 0.0.0.0 [exit-int]
ipv6 route ::/0 [exit-int]
global
sets default static route
ip route 0.0.0.0 0.0.0.0 [next-hop] [AD]
ipv6 route ::/0 [next-hop] [AD]
global
configs a floating static route

New Show Commands

Short Command
What It Displays
sh run int g0/0
running config for specified interface
sh run | begin line vty
starts running config at "line vty"
sh run | section line vty
entire section beginning with "line vty"
(Doesn't work on Packet Tracer)
sh ip int br | include up
all lines containing "­up"
sh ip int br | exclude unassigned
all lines NOT containing "­una­ssi­gne­d"
sh history
contents of history buffer (previ­ously entered commands)
sh ip protoc­ols
dynamic routing protocol settings

Refresher Commands: Enabling SSH

Short Command
Complete Command
Mode
ip domain n CCNA-lab.com (tab)
ip domain­-name CCNA-l­abs.com
global
cry key gen rsa gen mod 1024
crypto key generate rsa genera­l-keys modulus 1024
global
user Bob sec cisco
username Bob secret cisco
global
login lo
login local
line
trans in ssh
transport input ssh
line

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