User`s guide

Basic Operation 43
Preemption
Preemption provides a means for users with sufficient privilege to take control of a server from
another user with lesser or equal privilege.
NOTE: No time period will be displayed in cases where the server being viewed is attached to an
Avocent A1000R or Avocent A2000R.
NOTE: All users sharing the connection that is being preempted will be warned, but only the primary
user will be able to reject the preemption (if allowed).
Table 3-1 outlines the preemption scenarios and detailed scenarios in which preemption
requests can be rejected.
Preemption of Remote User by a Remote Administrator
If a remote administrator attempts to access a server that is being accessed by a remote user, a
message appears asking that the administrator waits while the user is informed that they will be
preempted. The remote user cannot reject the preemption request and will be disconnected.
The time period given before disconnection is defined by the Video session preemption timeout
setting in the Session dialog box. For information, see “Changing Global Network and Session
Parameters” on page 58.
NOTE: No time period will be displayed in cases where the server being viewed is attached to an
Avocent A1000R or Avocent A2000R.
Table 3-1. Preemption Scenarios
Current User Preempted by Preemption can be rejected
Remote User Local User No
Remote User Remote Administrator No
Remote User Remote Console Switch Administrator No
Remote Console Switch
Administrator
Local User Yes
Remote Console Switch
Administrator
Remote Console Switch Administrator Yes
Remote Administrator Local User No
Remote Administrator Remote Administrator Yes
Remote Administrator Remote Console Switch Administrator No
Local User Remote Administrator Yes
Local User Remote Console Switch Administrator Yes