Advantech EKI-9512-C0IDW10E, Руководство пользователя

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213 EKI-9500 Series User Manual
pose of a port channel is to increase the bandwidth between two devices. Port chan-
nels can also provide redundancy.
To access this page, click Switching > Port Channel > Summary .
Figure 4.237 Switching > Port Channel > Summary
The following table describes the items in the previous figure.
Item Description
Name A unique name to identify the port channel. Depending on the type of
port channel, this name is automatically assigned by the system or can
be configured by a system administrator.
Type The type of port channel:

Dynamic: Uses Link Aggregation Control Protocol (LACP) Proto-
col Data Units (PDUs) to exchange information with the link part-
ners to help maintain the link state. To utilize Dynamic link
aggregation on this port channel, the link partner must also sup-
port LACP.

Static: Does not require a partner system to be able to aggregate
its member ports. When a port is added to a port channel as a
static member, it neither transmits nor receives LACP PDUs.
When configuring a port channel, use the Static Mode field to set the
port channel type. If the Static Mode is disabled, the port channel type
is Dynamic.
Admin Mode The administrative mode of the port channel. When disabled, the port
channel does not send and receive traffic.
STP Mode The spanning tree protocol (STP) mode of the port channel. When
enabled, the port channel participates in the STP operation to help pre-
vent network loops.
Link State The current link status of the port channel, which can be Up, Up (SFP),
or Down.
Link Trap The link trap mode of the port channel. When enabled, a trap is sent to
any configured SNMP receiver(s) when the link state of the port chan-
nel changes.
Local Preference
Mode The local preference mode for the port channel:

Enabled: Known unicast traffic that is destined for a LAG
egresses only out of members (if it has any) of the LAG interface
on the local unit. This ensures that the LAG-destined known uni-
cast traffic does not cross the external stack link when the LAG
has members on the local unit. Unknown unicast, broadcast and
multicast traffic behavior remains unchanged.

Disabled: Known unicast traffic that is destined for a LAG may
egress out of any of the member ports depending upon the traffic
pattern and the configured LAG hashing algorithm for the LAG
interface. It is possible that this traffic may egress out of a mem-
ber port on another unit. In this case, the traffic has to cross the
external stacking link, which results in unnecessary bandwidth
utilization of the external stack link.