sysmik Scalibur SCA-340, Manual, Page: 36 / 58

Software
36 sysmik.de Manual SCA-340 / SCA-340-L
eth LAN RSTP configurations
1
1
 
2
 
0
3
 
4
 
Table 4.3.3.3: LAN3/4 at
eth0
, LAN1/2 at
eth1
(factory default)
eth LAN RSTP configurations
1
1
 
2
 
3

0 4
Table 4.3.3.4: LAN4 at eth0 , LAN1/2/3 at eth1
4.3.4 Port Status Informations
If ring monitoring or RSTP is active, then the state of the external Ethernet ports is
available in the Niagra station, the Sedona application, and the Commissioning
Website. This allows to check whether the redundancy of a topology is still intact.
When a path gets disconnected, formerly inactive ports will be activated, which can
be signalized.
Sedona PlatformService
Lan1State…Lan4State: Boolean

true = FORWARDING

false = BLOCKING

null
= no current information available (RSTP or loop not active)
Niagara Station
Config

Drivers

SysmikScaIoNetwork

LocalPlatform

EthSwitch
Lan1State…Lan4State: Status Boolean

true {ok} = FORWARDING

false {ok} = BLOCKING

xxx {stale}
: no current information available (RSTP or loop not active)

xxx {disabled}
: status check disabled (configurable via
Config

Drivers

SysmikScaIoNetwork

LocalPlatform

EthSwitch.Enabled
)
4.3.5 Broadcast Storm Protection
Broadcast storm protection limits the traffic rate for multicast and broadcast packets.
Configurable values are 0.032 / 0.05 / 0.1 / 0.5 / 1 (factory default) / 2 / 5 / 10 / 20
Mbps. This setting applies to all four ports.
Even with ring monitoring and RSTP, redundant paths can't be completely avoided.
From detecting a topology change it takes several seconds until the reorganization
is completed. In this period a broadcast storm can develop, which might interfere
with the management messages for the reorganization, thus effectively preventing a
proper reorganization. The broadcast storm protection function limits the traffic load
of broadcast and multicast messages and terminates broadcast storms.