AS5800-EC Series CLI Reference Guide R02

Chapter 22 | Data Center Bridging Commands
DCB Exchange Commands
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configuration source. Selection of a port based upon compatibility of the
received configuration is suppressed.
auto-up – In auto-upstream mode, the port advertises a configuration, but
it is also willing to accept a configuration from the link-partner and
propagate it internally to the auto-downstream ports, as well as receive a
configuration propagated internally by other auto-upstream ports.
configuration-source – In configuration-source mode, the port is
manually selected as the configuration source. A configuration received
over this port is propagated to the other auto-downstream and auto-
upstream ports.
manual – In manual mode, the port does not accept a configuration from
peer devices, nor does it accept any internally propagated configuration.
The operational mode, traffic classes, and bandwidth information must be
specified by the operator. These ports will advertise their configuration to a
peer if DCBX is enabled on that port.
Default Setting
Manual
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
◆ Auto-downstream ports have the recommendation TLV parameter enabled. If
these ports receive internally propagated information, they will utilize this
information and ignore their local configuration.
◆ On auto-upstream ports, a recommendation TLV is sent to its peer, and
processed if received locally. Auto-upstream ports that receive internally
propagated information utilize this information and ignore their local
configuration. The first auto-upstream port to successfully accept a compatible
configuration becomes the configuration source.
Peer configurations received on auto-upstream ports other than the
configuration source are accepted if compatible with the configuration source,
and the DCBX client is set to operationally active on the auto-upstream port. If
the configuration is not compatible with the configuration source, a message is
logged indicating an incompatible configuration, an error counter
incremented, and the DCBX client operationally disabled on the port.
◆ On a port set to configuration-source mode, automatic election of a new
configuration source port is not allowed. Events that would cause selection of a
new configuration source are ignored. The configuration received over the
configuration source port is maintained until it is cleared by setting the port to
the manual mode. Only the configuration source is allowed to propagate its
configuration to other ports internally.
If no port is set to configuration-source mode, then the first auto-upstream port
to accept a compatible configuration becomes the configuration source.