Converged Enhanced Ethernet Administrator's Guide v6.4.0 (53-1001761-01, June 2010)
Converged Enhanced Ethernet Administrator’s Guide 25
53-1001761-01
CEE and LAN integration
3
DRAFT: BROCADE CONFIDENTIAL
Bandwidth requirements for each PGID are then chosen. The administrator decides to give IP
traffic 60 percent of the schedule and FCoE traffic 40 percent. Finally, since FCoE traffic requires
lossless communication, PFC is also enabled for PGID 1.
FIGURE 4 Configuring CEE attributes
For the given example, a CEE Map named “srvgroup” is created using the following syntax.
Perform the following steps in global configuration mode.
1. Define the name of the CEE map
Example of setting the CEE map name as “srvgroup”.
switch(config)#cee-map srvgroup
2. Specify the traffic requirements for each PGID using priority-group-table
Example of setting two traffic requirements.
switch(config)#priority-group-table 1 weight 40 pfc
switch(config)#priority-group-table 2 weight 60
3. The priority-table is then used to specify which priorities are mapped to which PGID. The
priorities are defined from lowest to highest.
Example of setting the priority mappings.
switch(config)#priority-table 2 2 1 1 2 2 2 2
4. Enter the copy command to save the running-config file to the startup-config file.
switch(config)#end
switch#copy running-config startup-config
Configuring DCBX
DCBX (Data Center Bridging eXchange Protocol) runs on CEE links and is an extension of the Link
Layer Discovery Protocol (LLDP). The primary goal of DCBX is to allow the discovery of CEE-capable
hosts and switches and allow CEE-specific parameters—such as those for ETS and PFC—to be sent
before the link is shared. DCBX parameters use a type-length-value (TLV) format. By default, DCBX
is turned on, but there are two TLVs that must be enabled to support FCoE on a CEE link:
• dcbx-fcoe-app-tlv – IEEE Data Center Bridging eXchange FCoE Application TLV.
• dcbx-fcoe-logical-link-tlv - IEEE Data Center Bridging eXchange FCoE Logical Link TLV. The
presence of this TLV declares that the FCoE part of the converged link is UP.
Priority
7
6
5
4
3
2
1
0
2
2
2
2
1
1
2
2
IP
IP
IP
IP
FCoE
FCoE
IP
IP
PGID Desc
Priority
-
1
3
2
7
6
5
4
1
0
2
-
-
40
60
-
BW%
-
FCoE
FCoE
_
40%
IP
_
60%
IP
-
-
Ye s
No
WRR
-
Desc PFC