MX2800 STS-1 User Manual Status, Section 4System State61204659L1-1A 4-5Card A/Card BThese fields display the current state of the two controller cards. Possible states for the controller cards arelisted in Table 4-5.ProtectionThis field lists the type of protection mode currently active. Possible states are listed in Table 4-6.NOTEFor more information on the different types of Protection Modes, Refer toSection 7, Circuit Redundancy.Card CommThis field displays the current state of the communication link between the two controller cards.• OK indicates that the cards are communicating• Failure indicates that the cards are not able to communicate with each other• Non-Redundant is displayed if there is only one card installedTable 4-5. Card A/B StateCondition DescriptionNot Installed No controller card is installed in this slot.Stand By The controller card is ready to pass data, but is currently acting as a backup card.Active The controller card is acting as the primary card.Failure The controller card has failed and needs to be replaced.Table 4-6. Protection StatesCondition DescriptionNetwork Both controller cards are installed and everything is functioning properly. Theunit is in full Network Protection Mode.Circuit The unit is in Circuit Protection Mode and everything is functioning properly, orthe unit is in Network Protection Mode and a failure on the network has occurred.None One controller card is installed, or the unit is in Circuit Protection Mode and thesecondary card has failed.