CISCO 3640 Router Configuration reference

Router

Router Boot mode configuration

Router (config) #boot system flash [iOS filename]//boot from flash

Router (config) #boot system fttp [TFTP address] [iOS filename]//boot from TFTP

Router (config) #boot syste rom//boot from ROM

Note: If there are multiple loading paths, load in sequence at startup and attempt to load from the subsequent path if the first load fails.

User name and password

Router (config) #username tang password bang

Local login Authentication

Router (config) #line vty 0 4

Router (config) # Login//Use the Enable password for logon authentication, or you can set the password through the password statement.

Router (config-line) #login Local//using the established username and password for authentication

Interface Configuration

Router (config) #interface S0

Router (config-if) #ip address 192.168.1.1 255.255.255.0

Timeout time setting

Router (config) #line console 0

Router (config-line) #exec-timeout [min] [sec]//timeout when no action

Router (config-line) #session-timeout [min]//Session Timeout

Router (config-line) #absolute-time//Absolute Timeout

Permission settings

Router (config) #privilege exec level [0-15] [command]//[command] for commands that are allowed under the current permission, such as: Show run

Static routing

Router (config) #ip route [Destination network] [mask] [Next Hop address | export] [admin distance] [no pass delete]

Router (config) #ip route IP packets corresponding to the [destination network] [mask] [null 0|loopback 0]//destination network are discarded.

Note: You can set the null interface parameter so that the router returns to the client or does not return a "Destination unreachable" ICMP packet. The default is to return ICMP. Such as:

Router (config) #int null 0

Router (config-if) #ip unreachables//Return Destination Unreachable information to client

Router (config-if) #no IP unreachables//does not return destination unreachable information, client displays timeout.

Route-map settings

Router (config) #route-map engineers [Permit|deny] [ordinal]//define engineers marked as Route-map.

Router (config-route-map) #match IP Address [access list number]//Set matching criteria for access list definitions

Router (config-route-map) #set IP next-hop 10.15.27.1//Match set Next hop address

Router (config-if) #ip Policy ROUTE-MAP Engineers//Apply engineers on the interface.

OSPF routing

OSPF Routing basic Configuration

Router (config) #router OSPF 10

Router (config-router) #network 192.168.2.0 0.0.0.255 area 0

OSPF authentication

Area plaintext Authentication Mode command:

Router (config-router) # area Area-id Authentication

Router (config-if) # IP OSPF authentication-key key

Zone MD5 authentication Mode command:

Router (config-router) # area Area-id Authentication Message-digest

Router (config-if) # IP OSPF message-digest-key key-id MD5 Md5key