How to configure an Ethernet interface of a Cisco router

The most common settings on an Ethernet interface are:

example:
port speed;
duplex;
IP address.

These can be set by the following commands:


Router>

! go to enable mode
Router>enable
Router#
!
! go to global configuration mode
Router#config t

Go to configuration of interface FasteEthernet 0/0 (module 0 / interface 0)
Router(config)# interface FastEthernet 0/0

! set IP address and subnet mask
Router(config-if)#ip address 192.168.0.1 255.255.255.0

! set port speed fixed to 100Mb/s
Router(config-if)#speed 100

! set duplex fixed to full-duplex
Router(config-if)#duplex full

! enable interface
Router(config-if)#no shutdown

! exit configuration mode
Router(config-if)#ctrl-Z

! write configuration to NVRAM
Router#wr


Vulnerability Announcements
Multiple Vulnerabilities in Cisco Unified IP Phones 7900 Series

Default Credentials Vulnerability in Cisco Network Registrar

Cisco RVS4000 and WRVS4400N Web Management Interface Vulnerabilities

Cisco Content Services Gateway Denial of Service Vulnerability

Multiple Vulnerabilities in Cisco AnyConnect Secure Mobility Client

Cisco SA 500 Series Security Appliances Web Management Interface Vulnerabilities

Cisco ASR 9000 Series Routers Line Card IP Version 4 Denial of Service Vulnerability

Field Notices
(Cisco CRS Series Routers) Field Notice: FN - 63126 - CRS: 1OC768-ITU/C cards may experience High Bit Error Rate (BER) or loss of Transmit power incidents in certain batch of optical module - Workaround Fix on Failure

(Cisco CRS Series Routers) Field Notice: FN - 63046 - CRS - 1OC768-POS-SR cards May Experience Bit Error Rate (BER) Incidents Due to Onboard Short - Fix on Failure

(Cisco MGX 8800 Series Switches) Field Notice: FN - 63319 - MGX - VXSM-SW May Report Error Code 400 for CAS Signaling Call - Workaround Available

(Cisco 7800 Series Media Convergence Servers) Field Notice: FN - 63324 - A Limited Number of HP DL380-G6 Servers Shipped Prior to November 16, 2009 May Unexpectedly Reboot

(Cisco 800 Series Routers) Field Notice: FN - 63343 - PCEX-3G-HSPA-R6 Modem not Recognized in Cisco IOS 15.1(1)T of Cisco 880G Series Router - Cisco IOS Upgrade Required

(Cisco MDS 9500 Series Multilayer Directors) Field Notice: FN - 63132 - MDS9000 - Potential DIMM Memory Issue in a Small Number of DS-X9530-SF2-K9 Supervisor Cards Manufactured Between September 2007 and February 2008