User guide

Chapter 4. Configuring Special Features 99
Software Option Keys
This router has several optional software features that can be purchased as software option keys when ordering the
router. These optional features are:
¥ IP routing
¥ DES or 3DES encryption (see Encryption, page 100)
¥ IP filters (see IP Filtering, page 103)
¥ L2TP tunneling (see L2TP Tunneling Ñ Virtual Dial-Up, page 106)
¥ IPSec (see IPSec (Internet Protocol Security), page 119)
These options are usually ordered with the router. The options are controlled by the presence of a key file in flash
memory or a bit set in the CMOS. Both values are checked; if either is set, the option is enabled.
Listing the Installed Software Options
To determine which software options are installed in your router, use the vers command. The vers command lists
all options:
¥ Options that are disabled are shown with a ~ prefix.
¥ Options that are enabled by a key file have a + prefix.
¥ Options that are enabled by a set bit have no prefix.
For example, the following vers command output shows that the L2TP and encryption options are disabled, but
all the other options are enabled.
Options: FRAME RELAY, SDSL, RFC1490, +IP ROUTING, IP FILTERING, WEB, ~L2TP,
~ENCRYPT, BRIDGE, IPX, CMMGMT
Adding a New Software Option Key
A software option key is a 44-character string, unique to a particular router, that enables a single feature. After
receiving a software options key, you can enter it using either the web GUI or the Command Line Interface.
When using the web GUI, you select the Upgrade Features button and enter the key. When using the Command
Line Interface, you enter the key using the following command:
key add <keystring>
Note: The new feature is not activated until the router is rebooted.