Configuring LAN service QoS parameters for a transparent domain

The LAN service QoS parameters determine the committed rate, burst rate, and burst duration.

The OM 1200 ESM module transparent domain QoS features are based on a token bucket model. Each byte of data that is transmitted costs one token.

The committed rate is essentially the rate at which tokens are deposited in the token bucket. When the actual data rates are lower than the committed rate, tokens accumulate in the bucket. During data bursts that exceed the committed rate, tokens are withdrawn from the bucket to pay for the burst data.

The burst rate is the maximum allowable data rate in Kbps, regardless of the balance of tokens in the bucket. The burst rate is essentially the maximum rate at which tokens can be withdrawn.

When the token bucket has a balance of zero, any additional traffic is dropped until more tokens are added. When the balance of the token bucket reaches its maximum capacity, any additional tokens are dropped.

The maximum capacity of the token bucket is determined by the burst rate and the committed rate. The OM 1200 ESM module supports seven different token bucket sizes. When you configure the committed rate and burst rate, you must choose a token bucket size that yields a valid burst duration value.

The committed rate is the maximum sustained rate in Kbps.

To configure LAN service QoS parameters for a transparent domain:

1. In Device Manager, choose Application > OEL2.

The OEL2 dialog box opens with the Transparent Domain tab displayed.

2. Click the LAN Services QoS tab to bring it to the front.
3. Find the table row corresponding to the transparent domain you are configuring.
4. In the CommittedRate cell, type the committed rate.
5. In the BurstRate cell, type the maximum burst rate.
6. Click on the BucketSize cell and choose a bucket size.
7. Check the MaxBurstDuration cell to make sure that the value is greater than zero.
8. Click Apply.

See also