Administrator Guide

Version Description
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.16.0 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
To clear DCBX frame counters, use the clear dcbx counters interface stack-unit/port
command.
To view the DCBX show output for multiple ports of a specified slot, you can specify any random number of ports
separated by commas or a hyphenated range of ports.
To specify a port range, you can enter a hyphenated range of one or more port range values separated with
commas; for example, show interfaces tengigabitethernet 10/0-1 dcbx detail. To enter any
random number of ports, you can enter a comma-separated string of port numbers, for example show
interfaces tengigabitethernet 10/2,4 dcbx detail
NOTE: The multiple port range value is supported only for the Gigabit Ethernet, 10-Gigabit
Ethernet, 40-Gigabit Ethernet, Fast Ethernet, FC, Port Channel, and VLAN interfaces.
The following describes the show interface dcbx detail command shown in the following example.
Field
Description
Interface Interface type with chassis slot and port number.
Port-Role Configured the DCBX port role: auto-upstream, auto-downstream, config-source, or
manual.
DCBX Operational
Status
Operational status (enabled or disabled) used to elect a configuration source and
internally propagate a DCB configuration. The DCBX operational status is the combination
of PFC and ETS operational status.
Configuration
Source
Specifies whether the port serves as the DCBX configuration source on the switch: true
(yes) or false (no).
Local DCBX
Compatibility
mode
DCBX version accepted in a DCB configuration as compatible. In auto-upstream mode, a
port can only receive a DCBX version supported on the remote peer.
Local DCBX
Configured mode
DCBX version configured on the port: CEE, CIN, IEEE v2.5, or Auto (port auto-configures
to use the DCBX version received from a peer).
Peer Operating
version
DCBX version that the peer uses to exchange DCB parameters.
Local DCBX TLVs
Transmitted
Transmission status (enabled or disabled) of advertised DCB TLVs (see TLV code at the
top of the show command output).
Local DCBX
Status: DCBX
Operational
Version
DCBX version advertised in Control TLVs.
Local DCBX
Status: DCBX Max
Version Supported
Highest DCBX version supported in Control TLVs.
Local DCBX
Status: Sequence
Number
Sequence number transmitted in Control TLVs.
Local DCBX
Status:
Acknowledgment
Number
Acknowledgement number transmitted in Control TLVs.
522 Data Center Bridging (DCB)