For an S series switch, why are there no statistics on Health packets on the RRPP transit node

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For an S series switch, because the RRPP transit node does not send Health packets, the statistics on Health packets are 0. There are statistics on Health packets on the master node. Check whether received and sent Health packets are normal according to the statistics on Health packets on the master node.
You can run the display rrpp statistics domain domain-id command to check statistics on RRPP packets.

Other related questions:
Checking packet statistics on S series switches
For S series fixed switches (except S1700 switches), if rate limiting has been configured in the inbound direction of an interface using the qos lr inbound cir cir-value [ cbs cbs-value ] command, you can run the display qos statistics interface interface-type interface-number inbound command to check packet statistics. Note: For some S series fixed switches that do not support this command, you can capture packets on interfaces to check packet loss. If a QoS CAR profile has been applied to a specified VLAN or the inbound direction of an interface on an S series modular switch, you can run the display qos car statistics interface interface-type interface-number inbound or display qos car statistics vlan vlan-id { broadcast-suppression | multicast-suppression | unicast-suppression } command to check statistics on forwarded and discarded packets. If traffic shaping has been configured on an S series switch using the qos queue queue-index shaping cir cir-value pir pir-value [ cbs cbs-value pbs pbs-value ] command, you can run the display qos queue statistics interface interface-type interface-number [ queue queue-index ] command to check queue-based traffic statistics on an interface. If rate limiting has been configured through MQC on an S series switch, you can run the display traffic policy statistics command to check packet statistics in the system, or on a specified card, interface, or VLAN to which a traffic policy has been applied.

S series switch RRPP configuration methods
For details on how to configure RRPP on S series switches (except S1700), click S1720&S2700&S3700&S5700&S6700&S7700&S9700 Typical Configuration Examples . The configurations on S9300 are the same with those on other models.

Support for the DHCP snooping location transition function on S series switch
S series switches (except S1700 switches) in V100R003 and later versions support the DHCP snooping location transition function, which is enabled by default.

Traffic statistics collection on S series switch
On S series switches (except S1700 switches), the statistic enable command in the traffic behavior view can be used to enable traffic statistics collection in the traffic behavior. To view the statistics about packets matching a traffic policy, enable the traffic statistics collection function. After the traffic statistics collection function is enabled, you can run the display traffic policy statistics command to view packet statistics. For the example for configuring traffic statistics, see "Example for Configuring Traffic Statistics" in Typical QoS Configuration.

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