Blade ICE G8124-E Manuale Utente

BMD00220, October 2010

Chapter 14: FCoE and CEE  

  205

802.1p priority values may be assigned by the administrator for a variety of purposes. However, 
when CEE is turned on, the G8124 sets the initial default values for ETS configuration as follows:

Default ETS Priority Groups

In the assignment model shown in 

, priorities values 0 through 2 are assigned 

for regular Ethernet traffic, which has “best effort” transport characteristics.

Priority 3 is typically used to identify FCoE (SAN) traffic.

Priorities 4-7 are typically used for latency sensitive traffic and other important business 
applications. For example, priority 4 and 5 are often used for video and voice applications such as 
IPTV, Video on Demand (VoD), and Voice over IP (VoIP). Priority 6 and 7 are often used for 
traffic characterized with a “must get there” requirement, with priority 7 used for network control 
which is requires guaranteed delivery to support configuration and maintenance of the network 
infrastructure.

The default assignment of 802.1p priority values on the G8124 changes depending on 

whether CEE is on or off. See 

 for details.

LAN
LAN

Latency-Sensitive LAN
Latency-Sensitive LAN
Latency-Sensitive LAN
Latency-Sensitive LAN

LAN

SAN