Ceetm
The following scenario shows how to configure a CEETM qdisc.
Test CEETM QDisc
Description
In this scenario, a CEETM qdisc is configured in DUT0 (‘eth0’ interface) to achieve linksharing among a hierarchy of classes. The difference with HTB is that CEETM uses a hardware-offloaded driver.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth1 address 10.0.0.2/24 set interfaces ethernet eth1 traffic control out QDISC set traffic control QDISC type ceetm bandwidth 100 set traffic control QDISC type ceetm class 1 bandwidth percentage 50 set traffic control QDISC type ceetm class 1 ceiling percentage 100 set traffic control QDISC type ceetm class 2 bandwidth percentage 20 set traffic control QDISC type ceetm class 2 ceiling percentage 0 set traffic control QDISC type ceetm class 3 bandwidth percentage 10 set traffic control QDISC type ceetm class 3 ceiling percentage 0 set traffic control QDISC type ceetm match 1 class 1 set traffic control QDISC type ceetm match 1 ip destination port 8080 set traffic control QDISC type ceetm match 2 class 2 set traffic control QDISC type ceetm match 2 ip protocol tcp set traffic control QDISC type ceetm default-class 3
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.1/24
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=361 ms --- 10.0.0.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 360.835/360.835/360.835/0.000 ms
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 8080Expect this output in
DUT0:Connecting to host 10.0.0.1, port 8080 [ 5] local 10.0.0.2 port 55536 connected to 10.0.0.1 port 8080 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 13.7 MBytes 115 Mbits/sec 14 515 KBytes [ 5] 1.00-2.00 sec 11.9 MBytes 99.6 Mbits/sec 36 479 KBytes [ 5] 2.00-3.00 sec 10.6 MBytes 89.1 Mbits/sec 0 529 KBytes [ 5] 3.00-4.00 sec 11.8 MBytes 99.0 Mbits/sec 0 563 KBytes [ 5] 4.00-5.00 sec 10.6 MBytes 89.1 Mbits/sec 45 426 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-5.00 sec 58.7 MBytes 98.4 Mbits/sec 95 sender [ 5] 0.00-5.04 sec 56.5 MBytes 94.1 Mbits/sec receiver iperf Done.
Step 5: Initiate a bandwidth test from DUT0 to DUT1
admin@DUT1$ monitor test performance server port 1234 admin@DUT0$ monitor test performance client 10.0.0.1 duration 5 port 1234Expect this output in
DUT0:Connecting to host 10.0.0.1, port 1234 [ 5] local 10.0.0.2 port 50188 connected to 10.0.0.1 port 1234 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 2.99 MBytes 25.1 Mbits/sec 0 144 KBytes [ 5] 1.00-2.00 sec 2.42 MBytes 20.3 Mbits/sec 0 260 KBytes [ 5] 2.00-3.00 sec 3.17 MBytes 26.6 Mbits/sec 0 375 KBytes [ 5] 3.00-4.00 sec 2.61 MBytes 21.9 Mbits/sec 0 489 KBytes [ 5] 4.00-5.00 sec 2.11 MBytes 17.7 Mbits/sec 51 457 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-5.00 sec 13.3 MBytes 22.3 Mbits/sec 51 sender [ 5] 0.00-5.20 sec 11.7 MBytes 18.8 Mbits/sec receiver iperf Done.
Step 6: Run command traffic control show at DUT0 and check if output contains the following tokens:
class 1 class 2 class 3Show output
Traffic control for interface 'eth1' - 'egress' mode -------------------------------------------------------------------------- ID traffic control type parent bytes sent pkts sent pkts dropped -------------------------------------------------------------------------- 1:0 QDISC ceetm root 75888065 50173 146 1:1 QDISC class 1 1:0 544895025 41250 0 1:2 QDISC class 2 1:0 25836780 8767 0 1:3 QDISC class 3 1:0 1104 10 0 2:0 - ceetm 1:1 0 0 0 3:0 - ceetm 1:2 0 0 0 4:0 - ceetm 1:3 0 0 0