H3C S5830V2 series, Руководство по настройке

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253
Step Command Remarks
4. Configure CDP-compatible
LLDP to operate in TxRx mode.
lldp compliance admin-status cdp
txrx By default, CDP-compatible LLDP
operates in
disable mode.
Configuring DCBX
Data Center Ethernet (DCE), also known as Converged Enhanced Ethernet (CEE), is enhancement and
expansion of traditional Ethernet local area networks for use in data centers. DCE uses the Data Center
Bridging Exchange Protocol (DCBX) to negotiate and remotely configure the bridge capability of
network elements.
DCBX has the following self-adaptable versions:
• DCB Capability Exchange Protocol Specification Rev 1.00.
•
DCB Capability Exchange Protocol Base Specification Rev 1.01.
•
IEEE Std 802.1Qaz-2011 (Media Access Control (MAC) Bridges and Virtual Bridged Local Area
Networks-Amendment 18: Enhanced Transmission Selection for Bandwidth Sharing Between Traffic
Classes).
DCBX offers the following functions:
•
Discovers the peer devices' capabilities and determines whether devices at both ends support these
capabilities.
•
Detects configuration errors on peer devices.
•
Remotely configures the peer device if the peer device accepts the configuration.
NOTE:
H3C devices support only the remote configuration function.
Figure 72 DCBX application scenario
DCBX enables lossless packet transmission on DCE networks.
As shown in
Figure 72 , DCBX applies to an FCoE based data center network, and operates on an access
switch. DCBX enables the switch to control the server's or disk device's adapter, and simplifies the
configuration and guarantees configuration consistency. DCBX extends LLDP by using the IEEE 802.1
organizationally specific TLVs (DCBX TLVs) to transmit DCBX data, including:
• In DCBX Rev 1.00 and DCBX Rev 1.01:
{
Application Protocol (APP).
{
Enhanced Transmission Selection (ETS).
{
Priority-based Flow Control (PFC).