Rolling Reboot - Brocade Communications Systems MLX Series Hardware Installation Manual

6
Managing the device
MP presence is toggled when you enter the ipc toggle mp-presence command.
Active MP presence is displayed for the LP as shown in
TABLE 35
Operation
1
2
1
2
1
2
The threshold time is set in the chassis when you enter the command dm
mp-presence-threshold-time. This command displays a warning message in the LP console before
LP is reset after finding the Active MP.
The allowed threshold time is 0 to 35 seconds only. The maximum limit of 35 seconds is
maintained because the LP is reset on the MP absence in 35 seconds. The input value 0 clears
mp-presence-threshold-time.
Commands for setting mp-presence-threshold time are shown in
TABLE 36
Operation
LP-1#dm mp-presence-threshold-time 10
LP-1#dm mp-presence-threshold-time 0
The below warning message is displayed when the threshold time is reached.
mp_presence_threshold_log: LP will go for a reset in another xx seconds.

Rolling Reboot

The Rolling Reboot feature provides a solution for continuously rebooting the line card when a
system failure occurs from causes including BIST failure, ECC errors, module init failure, and
hardware failure during system initialization. When there is failure, the system automatically
reboots in an infinite loop until the failure is resolved. Repetitious reboot cycles consume CPU
resources, power, and result in unwanted IPC traffic to the MP.
When the system detects the continuous reboot of a line card, that line card is placed into
interactive or down state mode after ten (10) consecutive reboot cycles, and a failure message is
sent to the MP.
232
Operations for LP and Port LED Status
Power off the LP.
Remove and insert the Active
MP.
Place the LP in interactive
mode.
Remove and insert the Active
MP.
Disable all LP ports
administratively.
Remove and insert the Active
MP.
Operations for Setting mp-presence-threshold Time
Table
LP Status Port LED Status
Reboot
ON: Active MP presence/absence
ON - OFF - ON: Insertion of Active
Reboot
MP
Reboot
Result
MP Presence threshold time is set to 10
seconds.
MP Presence threshold time is cleared.
Brocade MLX Series and NetIron XMR Hardware Installation Guide
35.
Table 36.
53-1003821-01