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=0.510 ms --- 10.0.0.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.510/0.510/0.510/0.000 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 616 6 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) 1:0 518 5 0 2:0 - fq_codel 1:1 98 1 0 3:0 - fq_codel 1:2 0 0 0 4:0 - fq_codel 1:3 518 5 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 616 6 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) 1:0 518 5 0 2:0 - fq_codel 1:1 98 1 0 3:0 - fq_codel 1:2 0 0 0 4:0 - fq_codel 1:3 518 5 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 40434 connected to 10.0.0.1 port 8080 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 5.43 MBytes 45.5 Mbits/sec 90 55.1 KBytes [ 5] 1.00-2.00 sec 3.48 MBytes 29.2 Mbits/sec 59 36.8 KBytes [ 5] 2.00-3.00 sec 3.91 MBytes 32.8 Mbits/sec 28 45.2 KBytes [ 5] 3.00-4.00 sec 3.48 MBytes 29.2 Mbits/sec 35 38.2 KBytes [ 5] 4.00-5.00 sec 3.91 MBytes 32.8 Mbits/sec 40 41.0 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-5.00 sec 20.2 MBytes 33.9 Mbits/sec 252 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 21175959 14013 23 1:1 QDISC class 1 1:0 98 1 0 1:2 QDISC class 2 1:0 21175103 14005 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 21175103 14005 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 21175959 14013 23 1:1 QDISC class 1 1:0 98 1 0 1:2 QDISC class 2 1:0 21175103 14005 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 21175103 14005 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 8080 parallel 1Expect this output in
DUT0:Connecting to host 10.0.0.1, port 8080 [ 5] local 10.0.0.2 port 40446 connected to 10.0.0.1 port 8080 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 4.83 MBytes 40.6 Mbits/sec 85 56.6 KBytes [ 5] 1.00-2.00 sec 3.85 MBytes 32.3 Mbits/sec 49 31.1 KBytes [ 5] 2.00-3.00 sec 3.73 MBytes 31.3 Mbits/sec 66 35.4 KBytes [ 5] 3.00-4.00 sec 3.73 MBytes 31.3 Mbits/sec 62 19.8 KBytes [ 5] 4.00-5.00 sec 3.73 MBytes 31.3 Mbits/sec 24 48.1 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-5.00 sec 19.9 MBytes 33.3 Mbits/sec 286 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 21172011 14002 23 1:1 QDISC class 1 1:0 0 0 0 1:2 QDISC class 2 1:0 21172011 14002 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 21172011 14002 23 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 21172011 14002 23 1:1 QDISC class 1 1:0 0 0 0 1:2 QDISC class 2 1:0 21172011 14002 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 21172011 14002 23 4:0 - fq_codel 1:3 0 0 0