3Com Wireless LAN Switch WX1200 Command Reference Manual page 617

alert
critical
error
warning
notice
info
debug
interval interval
messages. You can specify from 1 to 2147483647 seconds.
Defaults — Mark messages are disabled by default. When they are
enabled, MSS generates a message at the notice level once every 300
seconds by default.
Access — Enabled.
History — Introduced in MSS Version 4.1.
Examples — The following command enables mark messages:
WX1200# set log mark enable
success: change accepted.
See Also
display log config on page 612
— Interval at which MSS generates the mark
set log mark 617