[CCNA] Rangkuman konfigurasi Cisco #3

Router basic configuration:

This section includes IOS commands that are absolutely identical on both routers and switches, except the part of line aux 0 which is configured only on router because switches do not have an auxiliary port.

Router(config)# hostname R1

R1(config)# enable secret cisco

R1(config)# line con 0

R1(config-line)# password cisco

R1(config-line)# login

R1(config-line)# logging synchronous

R1(config-line)# exec-timeout 30 0

R1(config-line)# exit

R1(config)# line vty 0 4

R1(config-line)# password cisco

R1(config-line)# login

R1(config-line)# logging synchronous

R1(config-line)# exec-timeout 30 0

R1(config-line)# exit

R1(config)# line aux 0

R1(config-line)# password cisco

R1(config-line)# login

R1(config-line)# logging synchronous

R1(config-line)# exec-timeout 30 0

R1(config-line)# exit

R1(config)# banner motd $

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

UNAUTHORIZED ACCESS IS PROHIBITED

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

R1(config)# alias exec c configure terminal

R1(config)# alias exec s show ip interface brief

R1(config)# alias exec sr show running-config

R1(config)# no ip domain-lookup

R1(config)# service password-encryption

R1(config)# ip domain-name example.com

R1(config)# username admin password cisco

R1(config)# crypto key generate rsa

How many bits in the modulus [512]: 1024

R1(config)# ip ssh version 2

R1(config)# line vty 0 4

R1(config-line)# login local

R1(config-line)# transport input telnet ssh

Konfigurasi router interfaces:

Clock rate is set only on the DCE side, typically the ISP side. On your router which is DTE you don’t need to set clocking.

R1(config)# interface fastEthernet 0/0

R1(config-if)# description LINK TO LOCAL LAN THROUGH SW1

R1(config-if)# ip address 172.16.1.1 255.255.255.0

R1(config-if)# no shutdown

R1(config-if)# exit

R1(config)# interface serial 0/1/0

R1(config-if)# description WAN CONNECTION TO R2

R1(config-if)# ip address 10.1.1.1 255.255.255.252

R1(config-if)# clock rate 128000

R1(config-if)# no shutdown

Konfigurasi Router-On-Stick for vlanrouting:

R1(config)# interface fastEthernet 0/0

R1(config-if)# no shutdown

R1(config)# interface fastEthernet 0/0.10

R1(config-subif)# encapsulation dot1q 10

R1(config-subif)# ip address 192.168.10.1 255.255.255.0

R1(config-subif)# interface fastEthernet 0/0.20

R1(config-subif)# encapsulation dot1q 20

R1(config-subif)# ip address 192.168.20.1 255.255.255.0

Static route:

Using next hop:

1	R1(config)# ip route 10.1.2.0 255.255.255.0 10.1.128.1

Using exit interface:

1 2	R1(config)# ip route 10.1.2.0 255.255.255.0 Serial 0/0 *Note: Exit interface can be used in point-to-point serial links.

Default Route:

1	R1(config)# ip route 0.0.0.0 0.0.0.0 199.1.1.1

RIPv2 Configuration:

R1(config)# router rip

R1(config-router)# version 2

R1(config-router)# network 10.0.0.0 ! written as an original class A

R1(config-router)# no auto-summary

R1(config-router)# passive-interface serial 0/0

RIPv2 Verification:

Shows information about the running routing protocol process:

1	R1# show ip protocols

Shows the entire routing table:

1	R1# show ip route

Shows routes learned via RIP only:

1	R1# show ip route rip

Shows detailed information about the route to the specified destination network:

1	R1# show ip route 10.1.1.1

OSPF Configuration:

Enter OSPF router configuration mode:

1	R1(config)# router ospf 10 ! 10 = process ID

Configure one or more network commands to identify which interfaces will run OSPF:

R1(config-router)# network 10.0.0.0 0.255.255.255 area 0

R1(config-router)# network 172.16.8.0 0.0.7.255 area 0

R1(config-router)# network 192.168.1.254 0.0.0.0 area 1

Configure router ID either (Optional):

Using router-id ospf subcommand:

1	R1(config-router)# router-id 1.1.1.1

Konfigurasi an IP address on a loopback interface:

1 2	R1(config)# interface loopback 0 R1(config-if)# ip address 1.1.1.1 255.255.255.255

Change Hello and Dead intervals per interface (Optional):

1 2	R1(config-if)# ip ospf hello-interval 2 R1(config-if)# ip ospf dead-interval 6

Impact routing choices by tuning interface cost using one of the following ways (Optional):

Changing interface cost:

1	R1(config-if)# ip ospf cost 55

Changing interface bandwidth:

1	R1(config-if)# bandwidth 128 ! in Kbps

Changing the reference bandwidth that used by OSPF to calculate the cost:

1	R1(config-router)# auto-cost reference-bandwidth 1000 ! in Mbps

Disabling OSPF on a certain interface (Optional):

1	R1(config-router)# passive-interface serial 0/0

Konfigurasi OSPF authentication (Optional):

Type 0 authentication (none):

1	R1(config-if)# ip ospf authentication null

Type 1 authentication (clear text):

1 2	R1(config-if)# ip ospf authentication R1(config-if)# ip ospf authentication-key cisco

Type 2 authentication (md5):

1 2	R1(config-if)# ip ospf authentication message-digest R1(config-if)# ip ospf message-digest-key 1 md5 cisco

Configure maximum equal-cost paths (Optional):

1	R1(config-router)# maximum paths 6

OSPF verification:

Shows information about the running routing protocol process:

1	R1# show ip protocols

Shows the entire routing table:

1	R1# show ip route

Shows routes learned via OSPF only:

1	R1# show ip route ospf

Shows all neighboring routers along with their respective adjacency state:

1	R1# show ip ospf neighbors

Shows all the information contained in the LSDB:

1	R1# show ip ospf database

Shows detailed information about OSPF running on a specific interface:

1	R1# show ip ospf interfaces serial 0/0

EIGRP Configuration:

Enter EIGRP configuration mode and define AS number:

1	R1(config)# router eigrp 121 ! 121 = AS number

Configure one or more network commands to enable EIGRP on the specified interfaces:

R1(config-router)# network 10.0.0.0

R1(config-router)# network 172.16.0.0 0.0.3.255

R1(config-router)# network 192.168.1.1 0.0.0.0

R1(config-router)# network 0.0.0.0 255.255.255.255

Disable auto summarization (Optional):

1	R1(config-router)# no auto-summary

Disable EIGRP on a specific interface (Optional):

1	R1(config-router)# passive-interface serial 0/0

Configure load balancing parameters (Optional):

1 2	R1(config-router)# maximum-paths 6 R1(config-router)# variance 4

Change interface Hello and Hold timers (Optional):

1 2	R1(config-if)# ip hello-interval eigrp 121 3 R1(config-if)# ip hold-time eigrp 121 10

Impacting metric calculations by tuning BW and delay of the interface (Optional):

1 2	R1(config-if)# bandwidth 265 ! in Kbps) R1(config-if)# delay 120 ! tens of microseconds

EIGRP Authentication:

The key-string value and the mode must be the same on both routers. Lifetime options of the keys requires the clock of the routers to be set correctly, better use NTP, or it can cause problems

Create an authentication key chain as follows:

Create a key chain and give it a name:

1	R1(config)# key chain MY_KEYS

Create one or more keys giving them numbers:

1	R1(config-keychain)# key 1

Define the key value:

1	R1(config-keychain-key)# key-string1stKEY

Define the life time of the keys (optional):

1 2	R1(config-keychain-key)# send-lifetime [start time] [end time] R1(config-keychain-key)# accept-lifetime [start time] [end time]

Enable md5 authentication mode for EIGRP on the interface:

1	R1(config-if)# ip authentication mode eigrp121 md5

Refer to the correct key chain to be used on the interface:

1	R1(config-if)# ip authentication key-chain eigrp121 MY_KEYS

EIGRP Verification:

Shows routes learned via EIGRP only:

1	R1# show ip route eigrp

Shows EIGRP neighbors and status:

1	R1# show ip eigrp neighbors

Shows EIGRP topology table, including successor and feasible successor:

1	R1# show ip eigrp topology

Shows interfaces that run EIGRP:

1	R1# show ip eigrp interfaces

Lists statistics on numbers of EIGRP messages sent and received by the router:

1	R1# show ip eigrp traffic

Enjoy !

Sumber : http://m-shohiburridak.blogspot.com/2015/05/ccna-rangkuman-konfigurasi-cisco.html

InfoKomputer

[CCNA] Rangkuman konfigurasi Cisco #3

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