display mtrace statistics

Function

The display mtrace statistics command displays MTrace message statistics.

Format

display mtrace statistics

Parameters

None

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
sla	read

Usage Guidelines

Usage Scenario

When a fault occurs on a multicast network, you can run the mtrace command to check network connectivity.

If network connectivity is abnormal or you need to view information about IGMP messages sent and received by devices on the multicast network, run the display mtrace statistics command.

The

mtrace and

display mtrace statistics command output helps locate a faulty network device. The detailed process is as follows:

Run the display mtrace statistics command on the initiator. The number of query messages sent must be the same as that of response messages sent.
Run the mtrace command on the initiator. If the multicast path is not detected, run the display mtrace statistics command on the initiator to check whether response messages are replied.
Run the display mtrace statistics command on an intermediate device and check whether there are request messages sent or received. If no such messages exist, the intermediate device is faulty.

Precautions

Before running the display mtrace statistics command to collect MTrace message statistics generated in a certain period, you need to run the reset mtrace statistics command to clear the original statistics.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display MTrace message statistics.

<HUAWEI> display mtrace statistics
mtrace statistics:
 Type          Send  Receive   Invalid 
 Query         10       5         0 
 Request       20       4         0 
 Response      3        7         1

**Table 1** Description of the **display mtrace statistics** command output
Item	Description
mtrace statistics	MTrace message statistics.
Type	MTrace message type. Query: IGMP tracert query message. Request: IGMP tracert request message. Response: IGMP tracert response message.
Send	Number of messages sent.
Receive	Number of messages received.