
Industrial Managed
Ethernet Switch
User Manual
錯誤
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1,Product Manual
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Page
64
of
191
trunking
:
Fast Ethernet Trunking Setting
and
Giga Ethernet Trunking Setting
as shown in the lower sections of
the webpage.
Figure 2.69 Trunking Setting Webpage, example with EH7506-4PoE-2SFP
The users have an option to enable Link Aggregation Control Protocol (LACP) which is an IEEE standard (IEEE
802
.
3ad, IEEE 802
.
1AX-2008) by checking on the box under the
LACP
column for each group. LACP allows the
managed switch to negotiate an automatic bundling of links by sending LACP packets to the LACP partner or
another device that is directly connected to the managed switch and also implements LACP. The LACP packets
will be sent within a multicast group MAC address
.
If LACP finds a device on the other end of the link that also has
LACP enabled, it will also independently send packets along the same links enabling the two units to detect multiple
links between themselves and then combine them into a single logical link
.
During the detection period LACP
packets are transmitted every second
.
Subsequently, keep alive mechanism for link membership will be sent
periodically
.
Each port in the group can also operate in either LACP active or LACP passive modes
.
The LACP
active mode means that the port will enable LACP unconditionally, while LACP passive mode means that the port
will enable LACP only when an LACP partner is detected
.
Note that in active mode LACPport will always send
LACP packets along the configured links
.
In passive mode however, LACP port acts as
"
speak when spoken to
"
,