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Lantronix
SISTP1040-551-LRT Install Guide
33841 Rev. A
13
DIP Switch Settings
The top panel 5-position DIP switch is labeled SW and is located directly below the terminal
block connector. The default setting for all is Off .
DIP # State
Description
Note
1
On
Enable the Power alarm.
The feature becomes active immediately after
setting the DIP switch to ON.
Off
Disable the Power alarm.
2
On
Enable Broadcast Storm rate limit.
The feature becomes active immediately after
setting the DIP switch to ON
Off
Disable Broadcast Storm rate limit.
3
On
Enable Jumbo frame support.
The feature becomes active immediately after
setting the DIP switch to ON
Off
Disable Jumbo frame support.
4
On
Select PoE PoH Mode.
Set the DIP switch to ON before powering up the
switch.
Off
Select PoE 802.3bt Mode.
5
On
Enable PoE Power Cutoff when no SFP
link.
PSE LPT (Link Pass Thru) On/Off. The feature
becomes active immediately after setting the DIP
switch to ON
Off
Disable PoE Power Cutoff.
Descriptions of Features Set via DIP Switch
The top panel DIP switch is used to enable/disable Power alarm, broadcast storm limit, Jumbo Frame support,
PoH Mode/802.3bt mode, and PSE Link Pass Through mode as described below.
1. Power Alarm
This setting lets you enable or disable the power alarm. See “Alarm Relay Connection” below.
2. Broadcast Storm Rate Limit
This setting lets you enable or disable the rate limiting of broadcast storms. When enabled, the broadcast storm
limit is 10 Mbps line rate.
3. Jumbo Frame Support
This setting lets you enable or disable the support of jumbo frames of 1519~9216 bytes.