Traffic Control
The following scenario shows how to configure a basic
traffic control discipline, which can be used on OSDx for traffic
shaping and scheduling purposes. The monitor test
performance operational command can be used to calculate
the throughput.
Test Traffic Control
Description
In this scenario, a simple HTB qdisc is configured in DUT0.
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 34 set traffic control QDISC type htb class 2 bandwidth percentage 33 set traffic control QDISC type htb class 3 bandwidth percentage 33 set traffic control QDISC type htb default-class 3 set traffic control QDISC type htb match 1 class 1 set traffic control QDISC type htb match 1 ip protocol icmp set traffic control QDISC type htb match 2 class 2 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$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Ping IP address 10.0.0.1 from DUT0:
admin@DUT0$ ping 10.0.0.1 count 1 size 56 timeout 1Show output
PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data. 64 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.550 ms --- 10.0.0.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.550/0.550/0.550/0.000 ms
Step 4: Run command traffic control show at DUT0 and check if output matches the following regular expressions:
class 1\s+1:0\s+[1-9]\d*Show output
Traffic control for interface 'eth0' - 'egress' mode ------------------------------------------------------------------------------------ ID traffic control type parent bytes sent pkts sent pkts dropped ------------------------------------------------------------------------------------ 1:0 QDISC htb root 530 5 0 1:1 QDISC class 1 1:0 98 1 0 1:2 QDISC class 2 1:0 0 0 0 1:3 QDISC class 3 (default) 1:0 432 4 0 2:0 - fq_codel 1:1 98 1 0 3:0 - fq_codel 1:2 0 0 0 4:0 - fq_codel 1:3 432 4 0
Step 5: Run command traffic control show at DUT0 and check if output matches the following regular expressions:
class 2\s+1:0\s+0Show output
Traffic control for interface 'eth0' - 'egress' mode ------------------------------------------------------------------------------------ ID traffic control type parent bytes sent pkts sent pkts dropped ------------------------------------------------------------------------------------ 1:0 QDISC htb root 530 5 0 1:1 QDISC class 1 1:0 98 1 0 1:2 QDISC class 2 1:0 0 0 0 1:3 QDISC class 3 (default) 1:0 432 4 0 2:0 - fq_codel 1:1 98 1 0 3:0 - fq_codel 1:2 0 0 0 4:0 - fq_codel 1:3 432 4 0
Step 6: 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 1Expect this output in
DUT0:Connecting to host 10.0.0.1, port 8080 [ 5] local 10.0.0.2 port 40788 connected to 10.0.0.1 port 8080 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 5.22 MBytes 43.8 Mbits/sec 71 69.3 KBytes [ 5] 1.00-2.00 sec 3.98 MBytes 33.4 Mbits/sec 28 39.6 KBytes [ 5] 2.00-3.00 sec 3.48 MBytes 29.2 Mbits/sec 35 46.7 KBytes [ 5] 3.00-4.00 sec 3.98 MBytes 33.4 Mbits/sec 21 50.9 KBytes [ 5] 4.00-5.00 sec 3.98 MBytes 33.4 Mbits/sec 25 48.1 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-5.00 sec 20.6 MBytes 34.6 Mbits/sec 180 sender [ 5] 0.00-5.00 sec 19.3 MBytes 32.3 Mbits/sec receiver iperf Done.
Step 7: Run command traffic control show at DUT0 and check if output matches the following regular expressions:
class 2\s+1:0\s+[1-9]\d*Show output
Traffic control for interface 'eth0' - 'egress' mode ------------------------------------------------------------------------------------ ID traffic control type parent bytes sent pkts sent pkts dropped ------------------------------------------------------------------------------------ 1:0 QDISC htb root 21208103 14033 17 1:1 QDISC class 1 1:0 98 1 0 1:2 QDISC class 2 1:0 21207333 14026 0 1:3 QDISC class 3 (default) 1:0 672 6 0 2:0 - fq_codel 1:1 98 1 0 3:0 - fq_codel 1:2 21207333 14026 17 4:0 - fq_codel 1:3 672 6 0
Step 8: Run command traffic control show at DUT0 and check if output matches the following regular expressions:
class 2\s+1:0\s+[1-9]\d*Show output
Traffic control for interface 'eth0' - 'egress' mode ------------------------------------------------------------------------------------ ID traffic control type parent bytes sent pkts sent pkts dropped ------------------------------------------------------------------------------------ 1:0 QDISC htb root 21208103 14033 17 1:1 QDISC class 1 1:0 98 1 0 1:2 QDISC class 2 1:0 21207333 14026 0 1:3 QDISC class 3 (default) 1:0 672 6 0 2:0 - fq_codel 1:1 98 1 0 3:0 - fq_codel 1:2 21207333 14026 17 4:0 - fq_codel 1:3 672 6 0
Step 9: Run command traffic control clear at DUT0 and expect this output:
Step 10: Run command traffic control show at DUT0 and check if output matches the following regular expressions:
class 1\s+1:0\s+0Show output
Traffic control for interface 'eth0' - 'egress' mode ------------------------------------------------------------------------------------ ID traffic control type parent bytes sent pkts sent pkts dropped ------------------------------------------------------------------------------------ 1:0 QDISC htb root 0 0 0 1:1 QDISC class 1 1:0 0 0 0 1:2 QDISC class 2 1:0 0 0 0 1:3 QDISC class 3 (default) 1:0 0 0 0 2:0 - fq_codel 1:1 0 0 0 3:0 - fq_codel 1:2 0 0 0 4:0 - fq_codel 1:3 0 0 0
Step 11: Run command traffic control show at DUT0 and check if output matches the following regular expressions:
class 2\s+1:0\s+0Show output
Traffic control for interface 'eth0' - 'egress' mode ------------------------------------------------------------------------------------ ID traffic control type parent bytes sent pkts sent pkts dropped ------------------------------------------------------------------------------------ 1:0 QDISC htb root 0 0 0 1:1 QDISC class 1 1:0 0 0 0 1:2 QDISC class 2 1:0 0 0 0 1:3 QDISC class 3 (default) 1:0 0 0 0 2:0 - fq_codel 1:1 0 0 0 3:0 - fq_codel 1:2 0 0 0 4:0 - fq_codel 1:3 0 0 0
Step 12: 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 1Expect this output in
DUT0:Connecting to host 10.0.0.1, port 8080 [ 5] local 10.0.0.2 port 40860 connected to 10.0.0.1 port 8080 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 5.50 MBytes 46.1 Mbits/sec 87 55.1 KBytes [ 5] 1.00-2.00 sec 3.48 MBytes 29.2 Mbits/sec 45 41.0 KBytes [ 5] 2.00-3.00 sec 3.98 MBytes 33.4 Mbits/sec 26 36.8 KBytes [ 5] 3.00-4.00 sec 3.48 MBytes 29.2 Mbits/sec 21 43.8 KBytes [ 5] 4.00-5.00 sec 3.98 MBytes 33.4 Mbits/sec 26 33.9 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-5.00 sec 20.4 MBytes 34.2 Mbits/sec 205 sender [ 5] 0.00-5.00 sec 19.3 MBytes 32.3 Mbits/sec receiver iperf Done.
Step 13: Run command traffic control show at DUT0 and check if output matches the following regular expressions:
class 1\s+1:0\s+0Show output
Traffic control for interface 'eth0' - 'egress' mode ------------------------------------------------------------------------------------ ID traffic control type parent bytes sent pkts sent pkts dropped ------------------------------------------------------------------------------------ 1:0 QDISC htb root 21172141 14004 19 1:1 QDISC class 1 1:0 0 0 0 1:2 QDISC class 2 1:0 21172141 14004 0 1:3 QDISC class 3 (default) 1:0 0 0 0 2:0 - fq_codel 1:1 0 0 0 3:0 - fq_codel 1:2 21172141 14004 19 4:0 - fq_codel 1:3 0 0 0
Step 14: Run command traffic control show at DUT0 and check if output matches the following regular expressions:
class 2\s+1:0\s+[1-9]\d*Show output
Traffic control for interface 'eth0' - 'egress' mode ------------------------------------------------------------------------------------ ID traffic control type parent bytes sent pkts sent pkts dropped ------------------------------------------------------------------------------------ 1:0 QDISC htb root 21172141 14004 19 1:1 QDISC class 1 1:0 0 0 0 1:2 QDISC class 2 1:0 21172141 14004 0 1:3 QDISC class 3 (default) 1:0 0 0 0 2:0 - fq_codel 1:1 0 0 0 3:0 - fq_codel 1:2 21172141 14004 19 4:0 - fq_codel 1:3 0 0 0