Classification

Tests for HTB traffic classification using tc matches. Verifies that traffic lands on the correct leaf class by checking both rate and byte counters.

Test HTB Traffic Classification

Description

Verifies that traffic is classified into the correct leaf class. Only TCP traffic on port 8080 is sent, which must land on class 2. Class 3 (TCP any other port) must show zero bytes, confirming the match directs traffic to the intended class and not elsewhere.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.2/24
set interfaces ethernet eth0 traffic control out QDISC
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set traffic control QDISC type htb bandwidth 100
set traffic control QDISC type htb class 1 bandwidth percentage 50
set traffic control QDISC type htb class 1 ceiling percentage 100
set traffic control QDISC type htb class 2 bandwidth rate 30
set traffic control QDISC type htb class 2 parent 1
set traffic control QDISC type htb class 3 bandwidth rate 20
set traffic control QDISC type htb class 3 parent 1
set traffic control QDISC type htb class 4 bandwidth percentage 10
set traffic control QDISC type htb default-class 4
set traffic control QDISC type htb match 1 class 2
set traffic control QDISC type htb match 1 ip destination port 8080
set traffic control QDISC type htb match 1 ip protocol tcp
set traffic control QDISC type htb match 2 class 3
set traffic control QDISC type htb match 2 ip protocol tcp

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address 10.0.0.1/24
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Ping the IP address 10.0.0.1 from DUT0:

admin@DUT0$ ping 10.0.0.1 count 1 size 56 timeout 1

Step 4: Initiate a bandwidth test from DUT0 to DUT1

admin@DUT1$ monitor test performance server port 8080
admin@DUT0$ monitor test performance client 10.0.0.1 duration 5 port 8080 parallel 1

Step 5: Run the command traffic control show on DUT0 and check whether the output matches the following regular expressions:

class 2\s+1:1\s+[1-9]
class 3\s+1:1\s+0