# Feature licenses

This section describes the types of licenses and lists the features that require a license. You purchase switches and licenses separately.

| CAUTION
| If you reset a standalone device to the default configuration, you erase the license file.

To enable certain features, Avaya Ethernet Routing Switches support

- an Advanced or Premier License

- a Trial License

Licenses support the following features (under an Advanced License unless otherwise noted):

- IPv6 Forwarding

- Split MultiLink Trunking (SMLT)

- Open Shortest Path First (OSPF)

- Virtual Router Redundancy Protocol (VRRP)

- Equal Cost Multi Path (ECMP)

- Protocol Independent Multicast-Sparse Mode (PIM-SM)

- Border Gateway Protocol (BGP)

- VRF-LIte (Premier License required)

To enable Premier License features on an Avaya Ethernet Routing Switch 5000 Series, you must

- purchase a Premier License Kit

- generate a license file on the Avaya electronic licensing portal

- install a license file on the switch

Each License Kit contains

- a Software License Certificate

- a License Authorization Code (LAC) for a specific number of licenses

The License Certificate contains printed instructions that describe how to

- deposit license entitlements (LACs) into a license bank

- enter switch MAC addresses

- generate the license file

- install the license file on a switch to unlock licensed features

You can install a one time Trial License to enable licensed features on a switch for 30 days. You can obtain the trial license on the Avaya Web site. Configure Trial License Support through Avaya Command Line Interface (ACLI) or the ASCII Configuration Generator (ACG). Software monitors and tracks the trial version of the feature license.

At the end of the 30 day trial period, the system disables all of the licensed features except Split MultiLink Trunking (SMLT). To prevent loop formation, SMLT remains active until you reset the stack or unit.

To minimize network impact, the following events occur prior to Trial License expiry:

- Five days prior to license expiration the system sends a trap. Avaya recommends that you manually disable SMLT and remove cabling loops after you receive the first trap because, after you reset the stack or unit, a loop forms if you do not disable ports participating in the InterSwitch Trunk (IST).

- One day prior to license expiration the system sends a second trap.

- The system sends a final trap at license termination.

- The system disables all licensed features, except SMLT, after it sends the final trap.

See the following table for the text of the traps you receive prior to, and at, Trial License termination.

Table 1. Trial license traps
Days prior to Trial License termination | Trap text
--- | ---
Five | `Trap: bsnTrialLicenseExpiration: Trial license 1 will expire in 5 day(s).`
One | `Trap: bsnTrialLicenseExpiration: Trial license 1 will expire in 1 day(s).`
At Trial License termination | `Trap: bsnTrialLicenseExpiration: Trial license 1 has expired.`