Extreme Networks ExtremeWare XOS 11.3, Manual

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Status Monitoring and Statistics
ExtremeWare XOS 11.3 Concepts Guide
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installed, failover to the other MSM if the switch detects a faulty MSM or I/O module. This enhanced
level of recovery detects faults in the ASICs as well as packet buses.
To configure module recovery, use the following command:
configure sys-recovery-level slot <slot_number> [none | reset]
Where the following is true:
●
none
—Configures the MSM or I/O module to maintain its current state regardless of the detected
fault. The offending MSM or I/O module is not reset. ExtremeWare XOS logs fault and error
messages to the syslog.
●
reset
—Specifies that the offending MSM or I/O module be reset upon fault detection. ExtremeWare
XOS logs fault, error, system reset, and system reboot messages to the syslog.
The default setting is
reset
. Extreme Networks recommends using the default setting.
To get the most from module recovery, Extreme Networks recommends using the default settings for
both system recovery and module recovery. The default setting for system recovery is
all
, and the
default setting for module recovery is
reset
. For more information about system recovery, see
“Configuring System Recovery” on page 193 .
By using the default settings, the switch resets the offending MSM or I/O module if fault detection
occurs. An offending MSM is reset any number of times and is not permanently taken offline. On the
BlackDiamond 10K switch, an offending I/O module is reset a maximum of three times. On the
BlackDiamond 8800 family of switches, an offending I/O module is reset a maximum of five times.
After the maximum number of resets, the I/O module is permanently taken offline.
Module Recovery Actions
Table 29 displays the actions module recovery takes when configured as reset (the default setting) in
combination with the system recovery settings all and none.
Table 29: Module recovery actions
Module Recovery Setting
and Hardware Configuration System Recovery Setting
and Action Taken
reset all
Single MSM Resets the MSM.
Dual MSM Resets the primary MSM
and fails over to the
backup MSM.
I/O Module BlackDiamond 10K
switch—Resets the I/O
module a maximum of
three times. After the
third time, the I/O module
is permanently taken
offline.
BlackDiamond 8800
family of switches—Resets
the I/O module a
maximum of five times.
After the fifth time, the
I/O module is permanently
taken offline.