Specifications

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Cisco 12000 Series Internet Router Configuration Guide for Cisco IOS Release 12.0S
Chapter 2 Basic Configuration of the Cisco 12000 Series Internet Router
Configuration Tasks
Enter enable secret [<Use current secret>]: esecret
The enable password is used when you do not specify an
enable secret password, with some older software versions, and
some boot images.
Enter enable password: epassword
The virtual terminal password is used to protect
access to the router over a network interface.
Enter virtual terminal password: tpassword
For maximum security, the enable secret and the enable password should be different. If you use the
same password for both the enable secret and enable password prompts during the setup process, the
system accepts it but issues a warning indicating that you should enter a different password.
An enable secret can contain from 1 to 25 uppercase and lowercase alphanumeric characters; an enable
password can contain any number of uppercase and lowercase alphanumeric characters. You cannot use
a number as the first character. Spaces, however, are valid password characters. For example, two words
is a valid password. Leading spaces are ignored, but trailing spaces are recognized.
Make a note of all passwords you set and store that information in a secure location for future reference.
For more detailed information on how to establish password protection or configure privilege levels,
refer to the Security Configuration Guide, located at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/secur_c/index.htm
Configuring Ethernet Access for Network Management
You can configure Ethernet connectivity to your router via the route processor (RP) for network
management purposes. The RJ-45 and MII receptacles on the faceplate of the GRP and the RJ-45
receptacles on the faceplate of the PRP are IEEE 802.3u-compliant interfaces. You can use one interface
or the other, but not both at the same time.
To configure Ethernet connectivity, perform the following procedure. The IP address and subnet mask
are examples only. You will need to obtain this information from your network administrator.
Ethernet connectivity can also be configured using the setup command facility, as in the following
example:
Configuring interface Ethernet0:
Is this interface in use?: yes
Configure IP on this interface?: yes
IP address for this interface: 10.10.1.1
Number of bits in subnet field: 8
Class A network is 10.0.0.0, 8 subnet bits; mask is 255.255.0.0
Configure CLNS on this interface?: yes
Command Purpose
Step 1
Router(config)# interface ethernet 0
Enters interface configuration mode on the Ethernet interface.
Step 2
Router(config-if)# ip address 10.10.1.1
255.255.0.0
Specifies the IP address and subnet mask for the interface.