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BLADEOS 6.5.2 Application Guide
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:
Figure 23 Default ETS Priority Groups
In the assignment model shown in Figure 23 on page 205, 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.
Note – The default assignment of 802.1p priority values on the G8124 changes depending on
whether CEE is on or off. See “Turning CEE On or Off” on page 192 for details.
802.1p
Priority
Typical Traffic Type
LAN
LAN
Latency-Sensitive LAN
Latency-Sensitive LAN
Latency-Sensitive LAN
Latency-Sensitive LAN
LAN
SAN
PGID
0
1
2
3
4
5
6
7
2
3
4
Bandwidth
Allocation
10%
50%
40%