Installing Software When a Firewall Does Not Exist
Task 1: Obtain the Required Information
Before you install the software, obtain the following information:
•The password (if one is configured) that allows you to access Privileged Exec mode on the
•The IP address of the network host
•The IP address of the
•The IP address of the next hop to reach the destination network (for example, a gateway)
•The login name and password for the FTP server
•The procedure for mounting a CD on the network host
Task 2: Divert Network Traffic to Another Router
The system will be unavailable during the installation process.
Task 3: Access Privileged Exec Mode
To access this mode via the CLI:
1Issue the enable command.
host1>enable
2Type the password if the system prompts you.
Task 4: Configure IP on an Interface
Typically, you configure IP on the Fast Ethernet interface of the SRP module. To configure IP on an interface:
1Determine the slot number of the module.
host1#show version
2Determine the port number of the module.
3Determine whether the interface already has an IP address.
host1#show ip interface fastEthernet 6/0
If an IP interface is not configured, you see the message: “Invalid interface.”
If the interface already has an IP address, go to Task 5. Otherwise, proceed with step 4.