Simple for CCNA)

This article lists the basic configurations and common configuration commands of Cisco routers in detail for actual operation problems. I believe this article will help you.

Start the interface and assign an IP Address:
Router>
Router> enable
Router #
Router # configure terminal
Router (config )#
Router (config) # interface Type Port
Router (config-if) # no shutdown
Router (config-if) # ip address IP-Address Subnet-Mask
Router (config-if) # ^ z

Configure the RIP route protocol: Once every 30 seconds
Router (config) # router rip
Router (config-if) # network Network-Number <-- advertise standard A, B, and C Networks -->
Router (config-if) # ^ z

Configure the IGRP route protocol: updated every 90 seconds
Router (config) # router igrp AS-Number <-- AS-Number range: 1 ~ 65535 -->
Router (config-if) # network Network-Number <-- advertise standard A, B, and C Networks -->
Router (config-if) # ^ z configure the Novell IPX Routing Protocol: The Novell RIP is updated once every 60 seconds.
Router (config) # ipx routing [node address]
Router (config) # ipx maximum-paths Paths <-- set load balancing, range: 1 ~ 512 -->
Router (config) # interface Type Port
Router (config-if) # ipx network Network-Number [encapsulation-type] [secondary] <-- advertise standard A, B, and C Networks -->
Router (config-if) # ^ z configure DDR:
Router (config) # dialer-list Group-Number protocol Protocol-Type permit [list ACL-Number]
Router (config) # interface bri 0
Router (config-if) # dialer-group Group-Number
Router (config-if) # dialer map Protocol-Type Next-Hop-Address name Hostname Telphone-Number
Router (config-if) # ^ z configure ISDN:
Router (config) # isdn swith-type Swith-Type <-- configure the ISDN switch type, China uses basic-net3 -->
Router (config-if) # ^ z

Configure Frame Relay:
Router (config-if) # encapsulation frame-relay [cisco | ietf]
Router (config-if) # frame-relay LR-type [ansi | cisco | q933a]
Router (config-if) # bandwidth kilobits
Router (config-if) # frame-relay invers-arp [Protocol] [dlci]
<-- Configure the static Invers ARP table:
Router (config) # frame-relay Protocol-Address DLCI [Broadcast] [ietf | cisco] [payload-compress | packet-by-packet]
-->
<-- Set the Keepalive interval:
Router (config-if) # keepalive Number
-->
<-- Specify DLCI for the Local interface:
Router (config-if) # frame-lelay local-dlci Number
-->
<-- Sub-interface configuration:
Router (config-if) # interface Type Port. Subininterface-Number [multipoint | point-to-point]
Router (config-subif) # ip unnumbered Interface
Router (config-subif) # frame-lelay local-dlci Number
-->
Router (config-if) # ^ z configure the standard ACL:
Router (config) # access-list Access-List-Number [permit | deny] source [source-mask] <-- Access-List-Number range: 1 ~ 99 standard ACLs; 100 ~ 199 extend the ACL; 800 ~ 899 standard ipx acl; 900 ~ 999 extend ipx acl; 1000 ~ 1099 ipx sap acl; 600 ~ 699 Apple Talk ACL -->
Router (config) # interface Type Port
Router (config-if) # ip access-group Access-List-Number [in | out]
Router (config-if) # ^ z configure the extended ACL:
Router (config) # access-list Access-List-Number [permit | deny] [Protocol | Protocol-Number] source-wildcard [Source-Port] destination-wildcard [Destination-Port] [established]
Router (config) # interface Type Port
Router (config-if) # ip access-group Access-List-Number [in | out]
Router (config-if) # ^ z configure the name ACL:
Router (config) # ip access-list [standard | extended] ACL-Name
Router (config [std-| ext-] nacl) # [permit | deny] [IP-Access-List-Test-Conditions]
Router (config [std-| ext-] nacl) # no [permit | deny] [IP-Access-List-Test-Conditions]
Router (config [std-| ext-] nacl) # ^ z
Router (config) # interface Type Port
Router (config-if) # ip access-group [ACL-Name | 1 ~ 199] [in | out]
Router (config-if) # ^ z configure the DCE clock:
Router # show controllers Type Port <-- confirm DCE interface -->
Router (confin-if) # clock rate 64000 <-- enter the DCE interface to set the clock rate -->
Router (config-if) # ^ z configure the PPP protocol:
Router (config) # username Name password Set-Password-Here <-- the validator creates a database -->
Router (config) # interface Type Port
Router (config-if) # encapsulation ppp <-- start the PPP protocol -->
Router (config-if) # ppp outhentication [chap | chap pap | pap chap | pap] <-- select PPP authentication -->
Router (config-if) # ppp pap sent-username Name password Password <-- send verification information -->
Router (config-if) # ^ zPAP one-way authentication configuration instance:

Validators:
Router-server (config) # username Client password 12345 <-- the validator creates a database -->
Router-server (config) # interface serial 0
Router-server (config-if) # encapsulation ppp
Router-server (config-if) # ppp authentication pap <-- select to use PAP for PPP authentication -->
Router-server (config-if) # ^ z
Verified:
Router-client (config-if) # encapsulation ppp
Router-client (config-if) # ppp pap sent-username Client password 12345 <-- send verification information -->
Router-client (config-if) # ^ zPAP two-way authentication configuration instance: