Policy

Tests for LWDRR classification using traffic policies. Verifies that rate shaping works with policy-based classification and that assigning traffic to a non-leaf parent class causes it to fall to the default class.

Test LWDRR Policy Rate TCP 8080

Description

Configures a two-level LWDRR hierarchy with traffic policy pre-classification and verifies that TCP traffic on port 8080 is shaped to ~30 Mbps by class 11 (child of class 10).

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 interfaces ethernet eth0 traffic policy out CLASSIFIER
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set traffic control QDISC type lwdrr bandwidth 100
set traffic control QDISC type lwdrr class 10 bandwidth percentage 50
set traffic control QDISC type lwdrr class 10 weight 100
set traffic control QDISC type lwdrr class 11 bandwidth rate 30
set traffic control QDISC type lwdrr class 11 parent 10
set traffic control QDISC type lwdrr class 11 weight 60
set traffic control QDISC type lwdrr class 12 bandwidth percentage 10
set traffic control QDISC type lwdrr class 12 weight 50
set traffic control QDISC type lwdrr default-class 12
set traffic policy CLASSIFIER rule 1 selector SEL_TCP_8080
set traffic policy CLASSIFIER rule 1 set class 11
set traffic selector SEL_TCP_8080 rule 1 destination port 8080
set traffic selector SEL_TCP_8080 rule 1 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

Show 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=0.482 ms

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.482/0.482/0.482/0.000 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 8080 parallel 1

Expect the following output on DUT0:

Connecting to host 10.0.0.1, port 8080
[  5] local 10.0.0.2 port 40824 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    0    243 KBytes
[  5]   1.00-2.00   sec  3.29 MBytes  27.6 Mbits/sec    0    243 KBytes
[  5]   2.00-3.00   sec  3.29 MBytes  27.6 Mbits/sec    0    243 KBytes
[  5]   3.00-4.00   sec  3.36 MBytes  28.1 Mbits/sec    0    243 KBytes
[  5]   4.00-5.00   sec  3.36 MBytes  28.1 Mbits/sec    0    243 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-5.00   sec  18.5 MBytes  31.1 Mbits/sec    0             sender
[  5]   0.00-5.00   sec  17.5 MBytes  29.4 Mbits/sec                  receiver

iperf Done.

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

class 11\s+1:10\s+[1-9]

Show output

Traffic control for interface 'eth0' - 'egress' mode

----------------------------------------------------------------------------------------
  ID    traffic control         type         parent  bytes sent  pkts sent  pkts dropped
----------------------------------------------------------------------------------------
1:0     QDISC            lwdrr               root      19372961        337             0
1:10    QDISC            class 10            1:0       19372061        329             0
  1:11  QDISC            class 11            1:10      19372061        329             0
1:12    QDISC            class 12 (default)  1:0            900          8             0

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Test LWDRR Policy Assigns To Parent Class

Description

When a traffic policy assigns a packet to a parent class (a class that has children), the packet cannot be enqueued there because parent classes have no leaf qdisc. The packet must fall to the default class instead.

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 interfaces ethernet eth0 traffic policy out CLASSIFIER
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set traffic control QDISC type lwdrr bandwidth 100
set traffic control QDISC type lwdrr class 10 bandwidth percentage 50
set traffic control QDISC type lwdrr class 10 weight 100
set traffic control QDISC type lwdrr class 11 bandwidth rate 30
set traffic control QDISC type lwdrr class 11 parent 10
set traffic control QDISC type lwdrr class 11 weight 60
set traffic control QDISC type lwdrr class 12 bandwidth percentage 10
set traffic control QDISC type lwdrr class 12 weight 50
set traffic control QDISC type lwdrr default-class 12
set traffic policy CLASSIFIER rule 1 selector SEL_TCP
set traffic policy CLASSIFIER rule 1 set class 10
set traffic selector SEL_TCP rule 1 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

Show 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=0.502 ms

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.502/0.502/0.502/0.000 ms

Step 4: Initiate a bandwidth test from DUT0 to DUT1

admin@DUT1$ monitor test performance server port 5001
admin@DUT0$ monitor test performance client 10.0.0.1 duration 5 port 5001 parallel 1

Expect the following output on DUT0:

Connecting to host 10.0.0.1, port 5001
[  5] local 10.0.0.2 port 36076 connected to 10.0.0.1 port 5001
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  2.55 MBytes  21.4 Mbits/sec    0    208 KBytes
[  5]   1.00-2.00   sec  1018 KBytes  8.34 Mbits/sec    0    225 KBytes
[  5]   2.00-3.00   sec  1018 KBytes  8.34 Mbits/sec    0    225 KBytes
[  5]   3.00-4.00   sec  1.49 MBytes  12.5 Mbits/sec    0    225 KBytes
[  5]   4.00-5.00   sec  1018 KBytes  8.34 Mbits/sec    0    225 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-5.00   sec  7.02 MBytes  11.8 Mbits/sec    0             sender
[  5]   0.00-5.03   sec  5.82 MBytes  9.70 Mbits/sec                  receiver

iperf Done.

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

class 10\s+1:0\s+0
class 12 \(default\)\s+1:0\s+[1-9]

Show output

Traffic control for interface 'eth0' - 'egress' mode

----------------------------------------------------------------------------------------
  ID    traffic control         type         parent  bytes sent  pkts sent  pkts dropped
----------------------------------------------------------------------------------------
1:0     QDISC            lwdrr               root       6583860        139             0
1:10    QDISC            class 10            1:0              0          0             0
  1:11  QDISC            class 11            1:10             0          0             0
1:12    QDISC            class 12 (default)  1:0        6583860        139             0

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