H3C Technologies H3C S12500-X Series Switches - Manual (Page 189)

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[SwitchA] traffic classifier app_c operator or
[SwitchA-classifier-app_c] if-match acl 4000
[SwitchA-classifier-app_c] quit
# Create a traffic behavior named app_b, and configure the traffic behavior to mark packets with
802.1p priority value 3.
[SwitchA] traffic behavior app_b
[SwitchA-behavior-app_b] remark dot1p 3
[SwitchA-behavior-app_b] quit
# Create a QoS policy named plcy, associate class app_c with traffic behavior app_b in the QoS
policy, and apply the association to DCBX.
[SwitchA] qos policy plcy
[SwitchA-qospolicy-plcy] classifier app_c behavior app_b mode dcbx
[SwitchA-qospolicy-plcy] quit
# Apply the policy named plcy to the outgoing traffic of interface Ten-GigabitEthernet 1/0/1.
[SwitchA] interface ten-gigabitethernet 1/0/1
[SwitchA-Ten-GigabitEthernet1/0/1] qos apply policy plcy outbound
[SwitchA-Ten-GigabitEthernet1/0/1] quit
3. Configure ETS parameters:
# Configure the 802.1p-to-local priority mapping table to map 802.1p priority value 3 to local
precedence 3. (This is the default mapping table. You can modify this configuration as needed.)
[SwitchA] qos map-table dot1p-lp
[SwitchA-maptbl-dot1p-lp] import 3 export 3
[SwitchA-maptbl-dot1p-lp] quit
# Configure interface Ten-GigabitEthernet 1/0/1 to trust the 802.1p priority carried in packets.
[SwitchA] interface ten-gigabitethernet 1/0/1
[SwitchA-Ten-GigabitEthernet1/0/1] qos trust dot1p
# Enable byte-count WRR queuing on interface Ten-GigabitEthernet 1/0/1, and configure queue
3 on the interface to use strict priority queuing.
[SwitchA-Ten-GigabitEthernet1/0/1] qos wrr byte-count
[SwitchA-Ten-GigabitEthernet1/0/1] qos wrr 3 group sp
4. Enable interface Ten-GigabitEthernet 1/0/1 to automatically negotiate with its peer to decide
whether to enable PFC, and enable PFC for 802.1 priority 3.
[SwitchA-Ten-GigabitEthernet1/0/1] priority-flow-control auto
[SwitchA-Ten-GigabitEthernet1/0/1] priority-flow-control no-drop dot1p 3
Verifying the configuration
Through the specific menu on the DC server, you can see the data exchange procedure between the DC
server and Switch A. Take a Qlogic adapter on the DC server, for example. The data exchange
procedure is as follows:
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DCBX Parameters Details for CNA Instance 0 - QLE8142
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Mon May 17 10:00:50 2010
DCBX TLV (Type-Length-Value) Data
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