H3C S6850 Series Configuration Guide

20
7. Enter Ethernet interface view.
interface interface-type interface-number
8. Set the recovery mode for PFC deadlock detection on the Ethernet interface.
priority-flow-control deadlock recover-mode { auto | manual }
By default, PFC deadlock detection recovers in automatic mode.
9. Enable PFC deadlock detection on the Ethernet interface.
priority-flow-control deadlock enable
By default, PFC deadlock detection is disabled.
10. (Optional.) Recover PFC deadlock detection on the Ethernet interface.
priority-flow-control deadlock recover
You can use only this command to recover PFC deadlock detection if you set the manual
recovery mode for PFC deadlock detection on the Ethernet interface.
Configuring the early warning thresholds for PFC packets
About the early warning thresholds for PFC packets
You can configure the early warning threshold for incoming or outgoing PFC packets of an interface
as needed. The early warning threshold notifies a situation where the PFC packet transmission rate
is still within a normal range but needs attention.
When the rate of PFC packets that an interface sends or receives reaches the early warning
threshold, the system generates traps and logs to notify the user. According to the traps and logs, the
user can discover some exceptions in the network, for example:
• The NIC of the peer device fails and continuously sends PFC packets at a high speed. In this
case, you can set the early warning threshold for incoming PFC packets.
• The device fails and continuously sends PFC frames. In this case, you can set the early warning
threshold for outgoing PFC packets.
To monitor bidirectional PFC packets, you can set the early warning thresholds for incoming packets
and outgoing packets separately.
Restrictions and guidelines
The number of PFC pause frames that an interface sends or receives is counted and the early
warning threshold configuration takes effect only when PFC is enabled.
Procedure
1. Enter system view.
system-view
2. Enter Ethernet interface view.
interface interface-type interface-number
3. Configure the early warning threshold for incoming PFC packets.
priority-flow-control early-warning dot1p dot1p-list inpps pps-value
By default, no early warning threshold is configured for incoming PFC packets.
4. Configure the early warning threshold for outgoing PFC packets.
priority-flow-control early-warning dot1p dot1p-list outpps
pps-value
By default, no early warning threshold is configured for outgoing PFC packets.

H3C S6850 Series Specifications

General

Brand	H3C
Model	S6850 Series
Category	Switch
Language	English