If you have a network with a very large number of endpoints (around 3000 endpoints per ES), and your network goes down, perform the following steps to make sure that your endpoints can reconnect as quickly as possible:

1. Place all of the clusters that have a large number of endpoints in allow all mode:

   1. Select System configuration.

   2. Click a cluster name.

   3. Select the allow all radio button.

   4. Click ok.

2. Leave the cluster in allow all mode for a full test cycle. If your test cycle is to retest endpoints every two hours, leave the cluster in allow all mode for two hours. To check the length of your test cycle:

   1. Select NAC policies.

   2. Click a policy name.

   3. Select the Basic settings menu option.

   4. In the Retest frequency area, check the Retest endpoints every X hours text field.

      NOTE:The retest frequency can be different for each policy.

3. Move the clusters back to normal mode:

   1. Select System configuration.

   2. Click a cluster name.

   3. Select the normal radio button.

   4. Click ok.