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=0.346 ms --- 10.0.0.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.346/0.346/0.346/0.000 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 376 4 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) 1:0 278 3 0 2:0 - fq_codel 1:1 98 1 0 3:0 - fq_codel 1:2 0 0 0 4:0 - fq_codel 1:3 278 3 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 376 4 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) 1:0 278 3 0 2:0 - fq_codel 1:1 98 1 0 3:0 - fq_codel 1:2 0 0 0 4:0 - fq_codel 1:3 278 3 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 8080Expect this output in
DUT0:Connecting to host 10.0.0.1, port 8080 [ 5] local 10.0.0.2 port 40638 connected to 10.0.0.1 port 8080 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 4.82 MBytes 40.4 Mbits/sec 68 45.2 KBytes [ 5] 1.00-2.00 sec 3.73 MBytes 31.3 Mbits/sec 46 29.7 KBytes [ 5] 2.00-3.00 sec 3.73 MBytes 31.3 Mbits/sec 51 50.9 KBytes [ 5] 3.00-4.00 sec 3.73 MBytes 31.3 Mbits/sec 54 38.2 KBytes [ 5] 4.00-5.00 sec 3.73 MBytes 31.3 Mbits/sec 43 36.8 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-5.00 sec 19.7 MBytes 33.1 Mbits/sec 262 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 21183483 14017 23 1:1 QDISC class 1 1:0 98 1 0 1:2 QDISC class 2 1:0 21182627 14009 0 1:3 QDISC class 3 (default) 1:0 758 7 0 2:0 - fq_codel 1:1 98 1 0 3:0 - fq_codel 1:2 21182627 14009 23 4:0 - fq_codel 1:3 758 7 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 21183483 14017 23 1:1 QDISC class 1 1:0 98 1 0 1:2 QDISC class 2 1:0 21182627 14009 0 1:3 QDISC class 3 (default) 1:0 758 7 0 2:0 - fq_codel 1:1 98 1 0 3:0 - fq_codel 1:2 21182627 14009 23 4:0 - fq_codel 1:3 758 7 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 8080Expect this output in
DUT0:Connecting to host 10.0.0.1, port 8080 [ 5] local 10.0.0.2 port 37548 connected to 10.0.0.1 port 8080 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 5.03 MBytes 42.2 Mbits/sec 60 29.7 KBytes [ 5] 1.00-2.00 sec 3.73 MBytes 31.3 Mbits/sec 56 25.5 KBytes [ 5] 2.00-3.00 sec 3.73 MBytes 31.3 Mbits/sec 31 39.6 KBytes [ 5] 3.00-4.00 sec 3.73 MBytes 31.3 Mbits/sec 40 46.7 KBytes [ 5] 4.00-5.00 sec 3.73 MBytes 31.3 Mbits/sec 47 38.2 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-5.00 sec 19.9 MBytes 33.5 Mbits/sec 234 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 21182542 14008 24 1:1 QDISC class 1 1:0 0 0 0 1:2 QDISC class 2 1:0 21182542 14008 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 21182542 14008 24 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 21182542 14008 24 1:1 QDISC class 1 1:0 0 0 0 1:2 QDISC class 2 1:0 21182542 14008 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 21182542 14008 24 4:0 - fq_codel 1:3 0 0 0