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CISCO IOS BASE COMMANDS

== Hostname Definition ==

Define a hostname :

<nowiki>
hostname <hostname></nowiki>

=== Domain Name ====

Define a domain name :

<nowiki>
ip domain-name <domain.tld></nowiki>

== SSH ==

=== RSA key generation ===

!!! Require defined hostname AND domain name !!!

<nowiki>
crypto key generate rsa modulus <1024-4096></nowiki>

=== SSH Version ===

Define used SSH version :

<nowiki>
ip ssh version 2</nowiki>

=== Creating Users Accounts ===

By default, there are three privilege levels on the router:
* privilege level 0 = seldom used, but includes 5 commands: disable, enable, exit, help, and logout
* privilege level 1 = non-privileged (prompt is router>), the default level for logging in
* privilege level 15 = privileged (prompt is router#), the level after going into enable mode

Levels 2-14 are not used in a default configuration, but commands that are normally at level 15 can be moved down to one of those levels and commands that are normally at level 1 can be moved up to one of those levels. Obviously, this security model involves some administration on the router.
To determine the privilege level as a logged-in user, type the show privilege command. To determine what commands are available at a particular privilege level for the version of Cisco IOS® software that you are using, type a ? at the command line when logged in at that privilege level.

Privileges levels:
* username support privilege 5 secret cisco5
* username junior-admin privilege 10 secret cisco10
* username full-admin privilege 15 secret cisco10

User creation with cleartext password to encrypt:

<nowiki>
username <USER> privilege 15 secret 0 <PASSWORD></nowiki>

=== Channels and SSH ===

Setup virtual channels security :

<nowiki>
line vty 0 15
transport input ssh</nowiki>

== Authentications Activation ==

New authentication model :

<nowiki>
aaa new-model
!
aaa authentication login default local</nowiki>

Auto authenticate desactivation on console port :

<nowiki>
aaa authentication login noauth none</nowiki>

Renforced authentication local server:

<nowiki>
aaa authentication enable default group tacacs+ enable none</nowiki>

== @IP management ==

=== IP Mgmt ===

Management interface configuration :

<nowiki>
interface mgmt 0
ip address 192.168.13.48 255.255.255.0</nowiki>

=== Static Route ===

Define a default route :

<nowiki>
ip route vrf management 0.0.0.0 0.0.0.0 192.168.50.1</nowiki>

!!! OR !!!

<nowiki>
ip default-gateway 192.168.50.1</nowiki>

=== DNS ===

Define DNS (max 6) :

<nowiki>
ip name-server 80.67.169.12 80.67.169.40</nowiki>

== Firmware Update ==

Set up a TFTP local server with the desirated firmware.

=== TFTP ===

Launch the download of the firmware on the router :

<nowiki>
copy tftp: bootdisk:/
[Answer the questions]</nowiki>

=== Boot on new the firmware ===

Configure the startup boot option :

<nowiki>
boot system bootdisk:/<IMAGE-NAME></nowiki>

Then :

<nowiki>
reload</nowiki>

== Verifications ==

=== Firmware Version ===

Display IOS version :
<nowiki>
show version</nowiki>

Shows :

<nowiki>
Cisco IOS Software, c6880x Software (c6880x-ADVENTERPRISEK9-M), Version 15.1(2)SY10, RELEASE SOFTWARE (fc4)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2017 by Cisco Systems, Inc.
Compiled Tue 21-Feb-17 01:34 by prod_rel_team

ROM: System Bootstrap, Version 15.1(02)SY01 [ Rel 1.1], RELEASE SOFTWARE
BOOTLDR:
cisco uptime is 31 minutes
Uptime for this control processor is 31 minutes
System returned to ROM by reload at 13:36:56 UTC Tue May 16 2017
System image file is "bootdisk:/c6880x-adventerprisek9-mz.SPA.151-2.SY10.bin"
Last reload reason: Reload Command

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco C6880-X ( Intel(R) Core(TM) i3- CPU @ 2.00GHz ) processor (revision ) with 3144703K/262144K bytes of memory.
Processor board ID SAL204305C5
Processor signature 0xA7060200
Last reset from s/w reset
1 Virtual Ethernet interface
1 Gigabit Ethernet interface
16 Ten Gigabit Ethernet interfaces
1966064K bytes of USB Flash bootdisk (Read/Write)

Configuration register is 0x2102</nowiki>

=== Interfaces Verification ===

<nowiki>
show interfaces <INTERFACE-NAME> <STATUS | STATS ></nowiki>

=== Global Interfaces Configuration Verification ===
<nowiki>
show running-config | section interface</nowiki>

=== Display All Interfaces Status Informations ===

<nowiki>
show interface status</nowiki>

Shows :

<nowiki>
cisco#show interfaces status

Port Name Status Vlan Duplex Speed Type
Te5/1 disabled routed auto auto No Connector
Te5/2 disabled routed auto auto No Connector
Te5/3 disabled routed auto auto No Connector
Te5/4 disabled routed auto auto No Connector
Te5/5 disabled routed auto auto No Connector
Te5/6 disabled routed auto auto No Connector
Te5/7 disabled routed auto auto No Connector
Te5/8 disabled routed auto auto No Connector
Te5/9 disabled routed auto auto No Connector
Te5/10 disabled routed auto auto No Connector
Te5/11 disabled routed auto auto No Connector
Te5/12 disabled routed auto auto No Connector
Te5/13 disabled routed auto auto No Connector
Te5/14 disabled routed auto auto No Connector
Te5/15 disabled routed auto auto No Connector
Te5/16 disabled routed auto auto No Connector
mgmt0 connected routed a-full a-100 10/100/1000BaseT</nowiki>

CISCO-IOS - Base Commands - Revision history

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Admin: Text replacement - "Category:Post-It" to "Category:Wiki"

imported>Z at 12:16, 1 May 2024