Converged Enhanced Ethernet; Turning Cee On Or Off; Effects On Link Layer Discovery Protocol - Lenovo RackSwitch G8264 Application Manual

Converged Enhanced Ethernet

Turning CEE On or Off

Effects on Link Layer Discovery Protocol

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G8264 Application Guide for ENOS 8.4
Converged Enhanced Ethernet (CEE) refers to a set of IEEE standards designed to
allow different physical networks with different data handling requirements to be
converged together, simplifying management, increasing efficiency and
utilization, and leveraging legacy investments without sacrificing evolutionary
growth.
CEE standards were developed primarily to enable Fibre Channel traffic to be
carried over Ethernet networks. This required enhancing the existing Ethernet
standards to make them lossless on a per‐priority traffic basis, and to provide a
mechanism to carry converged (LAN/SAN/IPC) traffic on a single physical link.
Although CEE standards were designed with FCoE in mind, they are not limited to
FCoE installations. CEE features can be utilized in traditional LAN (non‐FCoE)
networks to provide lossless guarantees on a per‐priority basis, and to provide
efficient bandwidth allocation based on application needs.
By default on the G8264, CEE is turned off. To turn CEE on or off, use the following
CLI commands:
RS G8264(config)# [no] cee enable
CAUTION:
Turning CEE on will automatically change some 802.1p QoS and 802.3x standard
flow control settings on the G8264. Read the following material carefully to
determine whether you will need to take action to reconfigure expected settings.
It is recommended that you backup your configuration prior to turning CEE on.
Viewing the file will allow you to manually re‐create the equivalent configuration
once CEE is turned on, and will also allow you to recover your prior configuration
if you need to turn CEE off.
When CEE is turned on, Link Layer Discovery Protocol (LLDP) is automatically
turned on and enabled for receiving and transmitting DCBX information. LLDP
cannot be turned off while CEE is turned on.