What Is Enhanced Transmission Selection - Dell PowerConnect 8024 User Configuration Manual

The newly elected configuration source propagates DCBX client information
to the other ports and is internally marked as being the port over which
configuration has been received. Configuration changes received from the
peer over the configuration source port are propagated to the other auto-
configuration ports. Ports receiving auto-configuration information from the
configuration source ignore their current settings and utilize the
configuration source information.
When a configuration source is selected, all auto-upstream ports other than
the configuration source are marked as willing disabled.
To reduce flapping of configuration information, if the configuration source
port is disabled, disconnected or loses LLDP connectivity, the system clears
the selection of configuration source port (if not manually selected) and
enables the willing bit on all auto-upstream ports. The configuration on the
auto-configuration ports is not cleared (configuration holdover). If the user
wishes to clear the configuration on the system in this scenario, the user can
put the configuration source port into manual mode.
When a new port is selected as configuration source, it is marked as the
configuration source, the DCBX configuration is refreshed on all auto-
configuration ports and each port may begin configuration negotiation with
their peer again (if any information has changed).

What Is Enhanced Transmission Selection?

Enhanced Transmission Selection (ETS) enables the sharing and
redistribution of network bandwidth between various protocols. To support
ETS, PowerConnect 8024/8024F switches accept the ETS traffic class group
and bandwidth information Application Priority TLV from auto-upstream
devices and propagate it to auto-downstream devices. In addition, if iSCSI
CoS is enabled, an additional entry in the Application Priority TLV is added.
PowerConnect 8024/8024F switches support the reception and propagation
of ETS information in the automatic configuration port roles. They do not
use the ETS information to configure traffic class groups or bandwidth
allocations.
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Configuring Data Center Features