1553. On Device A, create an NQA test group.# Create an NQA test group with the administrator name being admin and operation tag being test.[DeviceA] nqa entry admin test# Configure the test type of the NQA test group as ICMP echo.[DeviceA-nqa-admin-test] type icmp-echo# Configure ICMP echo requests to use 10.2.1.1 as their destination IP address.[DeviceA-nqa-admin-test-icmp-echo] destination ip 10.2.1.1# Configure the device to perform tests at an interval of 100 milliseconds.[DeviceA-nqa-admin-test-icmp-echo] frequency 100# Create reaction entry 1. If the number of consecutive probe failures reaches 5, collaboration with othermodules is triggered.[DeviceA-nqa-admin-test-icmp-echo] reaction 1 checked-element probe-fail threshold-typeconsecutive 5 action-type trigger-only[DeviceA-nqa-admin-test-icmp-echo] quit# Configure the test start time and test duration for the test group.[DeviceA] nqa schedule admin test start-time now lifetime forever4. On Device A, create the track entry.# Create track entry 1, and associate it with reaction entry 1 of the NQA test group (admin-test).[DeviceA] track 1 nqa entry admin test reaction 15. Verify the configuration.# On Device A, display information about all the track entries.[DeviceA] display track allTrack ID: 1Status: PositiveNotification delay: Positive 0, Negative 0 (in seconds)Reference object:NQA entry: admin testReaction: 1# Display brief information about active routes in the routing table on Device A.[DeviceA] display ip routing-tableRouting Tables: PublicDestinations : 5 Routes : 5Destination/Mask Proto Pre Cost NextHop Interface10.1.1.0/24 Static 60 0 10.2.1.1 Vlan310.2.1.0/24 Direct 0 0 10.2.1.2 Vlan310.2.1.2/32 Direct 0 0 127.0.0.1 InLoop0127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0The output shows that the static route with the next hop 10.2.1.1 is active, and the status of the track entryis positive. The static route configuration works.# Remove the IP address of VLAN-interface 3 on Device B. system-view