Industrial Managed
Ethernet Switch
User Manual
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2.5.1
Port Setting
Port Setting
webpage is shown in Figure 2.60. First, the users can control the state of each port by checking on
the corresponding
Enable
box. Next on the third column of Figure 2.60, the users can select from the dropdown
list the port
’s
Negotiation
mechanism which can be either
Auto
or
Force
. When selecting the
Force
negotiation,
the port
’s speed and duplexing will be locked to the settings configured by the users. On the other hand, the
Auto
negotiation will allow the switch to determine the actual speed and duplexing for that port. Note that the Gigabit
Small Form
-
factor Pluggable (SFP) Port of the EH Series switch is downward compatible with 125/155Mbps
Transceivers; however, the speed needs to be set to 100 manually. The Gigabit SFP Port of the EHG/EMG Series
is not downward compatible.
Figure 2.60 Port Setting Webpage
On the fourth column, the transmission
Speed
of each port can be chosen from the dropdown list which could be
10
,
100
, or
1000
Mbps. The default speed is set to the highest possible rate in Mbps
.
Next the port
’s duplexing
(
Duplex
) can be either
Full
duplex or
Half
duplex on the fifth column. The
Half duplex
option allows one
-
way
communication at a time, while the
Full duplex
option allows simultaneous two
-
way communication.
Each port can set the
Flow Control
mechanism to either
On
or
Off
on the sixth column. This flow control will be
useful to avoid packet loss when there is a network congestion. However, the
Flow Control
setting is
Off
by default.
Finally, the users have options to set the
Rate Control
for each porton the seventh column as shown in Figure
2.60. The rate control mechanism will set a limit or maximum data rate which the port can transmit
.
Moreover, the
rate control can be imposed on both directions
:
the incoming traffic (
Ingress
) and the outgoing traffic (
Egress
).
However, there are some restrictions on the values that can be set on these two rate control parameters. Here is
the summary of the rules for
Rate Control
settings:
The outgoing (Egress) and incoming (Ingress) values have to be set between 0 and 102,400 (for 100 Mbps)
or 1,024,000 (for 1000 Mbps).
The value 0 is set to turn off the rate control mechanism.
The values have to be integer and multiple of 64 when the transmission rate is less than 1,792 Kbps. For
example: 64 Kbps, 128 Kbps, 512 Kbps, and 1,792 Kbps.
The values have to be integer and multiple of 1,024 when the transmission rate is between 1,792 Kbps and
102,400 Kbps (for 100Mbps) or 106,496 Kbps (for 1000M). Ex: 2,048Kbps, 3,072 Kbp
s…
102,400 Kbps.
The values have to be integer and multiple of 8,192 when transmission rate is greater than 106,496 Kbps
.
After configuring the port setting, please click on the
Update
button to enable any of your new configuration on the
switch. Descriptions of port setting options are summarized in Table 2.14.