Monitoring and Managing FEB Redundancy

Forwarding Engine Boards (FEBs) provide route lookup and forwarding functions from the Flexible PIC Concentrators (FPCs) and compact Flexible PIC Concentrators (cFPCs). You can configure FEB redundancy groups to provide high-availability for FEBs.

To view the status of FEBs, FEB redundancy groups, or connectivity between FPCs and FEBs, select Monitor>Chassis>FEB Redundancy in the J-Web interface. The FEB Information table displays the status of each FEB, as described in Table 59. Alternatively, you can view the same information by entering the show chassis feb command.

Table 59: FEB Information

Field	Description
FEB Slot	FEB slots are numbered 0 through 5.
State	State of each FEB.
Operation	To take a FEB offline or online or restart it, click Offline, Online, or Restart. Alternatively, enter the CLI command request chassis feb (online \| offline \| restart) slot slot-number. If you bring a FEB offline or remove it, interfaces on FPCs connected to the FEB are deleted. When you bring the FEB back online, the interfaces are restored.
Temperature	Temperature of the air passing by the FEB.
Total CPU Utilization	Total percentage of CPU being used by the FEB processor.
Interupt CPU Utilization	Of the total CPU being used by the FEB processor, the percentage being used for interrupts.
Memory DRAM	Total DRAM, in megabytes, available to the FEB processor.
Heap Memory Utilization	Percentage of heap space (dynamic memory) being used by the FEB processor. If this number exceeds 80 percent, you might experience a software problem (memory leak).
Buffer Memory Utilization	Percentage of buffer space being used by the FPC processor for buffering internal messages.

The FEB Redundancy Information table displays information about FEB redundancy groups, as described in Table 60. Alternatively, you can view the same information by entering the show chassis redundancy feb command.

Table 60: FEB Redundancy Information

Field	Description
Group	Name of the configured redundancy group.
FEB	Slot number of each FEB included in redundancy groups.
State	State of each FEB.
Priority	Status of FEB in the redundancy group: Backup, Primary, or null (group member that is not designated either backup nor primary).
Operation	To manually switch to or from a FEB backup, click Switch to Backup or Revert from Backup. Alternatively, enter the CLI command request chassis redundancy feb slot slot-number switch-to-backup \| revert-from-backup. Note: Manual switchover from a primary to a backup FEB results in less than 1 second of traffic loss, whereas automatic failover from the primary to a backup FEB results in a traffic loss period of up to 10 times as long.
Connected FPCs	FPCs connected to this FEB.
Redundancy State	Status of the FEB: Active—FEB is currently active. Ready—Backup FEB is ready for a switchover Not Ready—Backup FEB is not ready for a switchover.
AutoFailover	Automatic failover status of redundancy group: Enabled or Disabled.
Errors	Lists any errors.

The FPC/FEB Connectivity Information table displays the FEBs, if any, that are connected to each FPC and the status of each link. These fields are described in Table 61. Alternatively, you can view the same information using the show chassis fpc-feb-connectivity command.

Table 61: FPC/FEB Connectivity

Field	Description
FPC	Slot number of the FPC
FPC State	State of the FPC: Announce offline, Announce online, Empty, Offline, Online, Present, or Ready.
Connected FEB	Slot number of the FEB connected to the FPC or None if the FPC is not connected to a FEB. Note: To configure connectivity between FPCs and FEBs, go to Configuration>Quick Configuration>FEB Redundancy>FPC/FEB Connectivity.
FEB State	State of the FEB: Announce offline, Announce online, Empty, Offline, Online, Present, or Ready.
Link Status	Status of the link connecting the redundant FEB and FPC: Error Misconfiguration—Configuration between the FEB and FPC is incorrect. OK

For more information about the J-Web Monitor task, see Monitor Tasks.

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