Check Twamp Operation

This scenario shows how to configure Network Service Monitor (NSM) operations to measure network quality using active traffic probes and the TWAMP protocol. In addition, the TWAMP NSM responder service is configured.

Test IPv4 Destination

Description

In this scenario, TWAMP NSM operations are configured in DUT0 (using an IPv4 destination address) and the TWAMP NSM responder service is configured in DUT1.

Scenario

Step 1: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 10.215.200.100/24
set service nsm responder type twamp port 12345

Step 2: Set the following configuration in DUT0:

set interfaces ethernet eth0 address 10.215.200.50/24
set service nsm operation A destination-address 10.215.200.100
set service nsm operation A type twamp
set service nsm operation A interval 0.05
set service nsm operation A local-interface eth0
set service nsm operation A window 100
set service nsm operation A alarm al_loss activate loss 5
set service nsm operation A alarm al_rtt activate rtt 0.2
set service nsm operation A alarm al_jitter activate jitter 0.1
set system alarm al_loss
set system alarm al_rtt
set system alarm al_jitter
set service nsm operation A destination-port 12345

Step 3: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 4: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the NSM operations have been created successfully and that the alarms are desactivated, since the network quality is good.

Note

If a packet loss rate of 50% is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said packet loss in the network and will proceed to activate the ‘al_loss’ alarm.

Step 5: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out PLOSS
set traffic control PLOSS type network-emulator packet-loss 50

Step 6: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(true)

Step 7: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(true)

Note

The previous command output should show that the ‘al_loss’ alarm is activated, since there are packet losses on the network greater than the configured threshold. As there are packet losses in the network, the delay and jitter are also affected, so ‘al_rtt’ and ‘al_jitter’ alarms are also activated since the threshold configured for them is exceeded.

Note

If the packet loss emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there is no longer packet loss and will deactivate the ‘al_loss’ alarm.

Step 8: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 9: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 10: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Note

If an additional delay of 900 ms is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said delay in the network and will proceed to activate the ‘al_rtt’ alarm.

Step 11: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out RTT
set traffic control RTT type network-emulator network-delay 900

Step 12: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_rtt)\s+(true)

Step 13: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_rtt)\s+(true)

Note

The previous command output should show that the ‘al_rtt’ alarm is activated, since there are delays on the network greater than the configured threshold.

Note

If the additional delay emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there are no longer high delays and will deactivate the ‘al_rtt’ alarm.

Step 14: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 15: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 16: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Note

If an additional jitter of 1000 ms is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said jitter in the network and will proceed to activate the ‘al_jitter’ alarm.

Step 17: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out JITTER
set traffic control JITTER type network-emulator network-delay 1 jitter 1000

Step 18: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_jitter)\s+(true)

Step 19: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_jitter)\s+(true)

Note

The previous command output should show that the ‘al_jitter’ alarm is activated, since there is a jitter on the network greater than the configured threshold.

Note

If the additional jitter emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there are no longer high jitter and will deactivate the ‘al_jitter’ alarm.

Step 20: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 21: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 22: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Test IPv4 FQDN Destination

Description

In this scenario, TWAMP NSM operations are configured in DUT0 (using a Fully Qualified Domain Name as the IPv4 destination address) and the TWAMP NSM responder service is configured in DUT1.

Scenario

Step 1: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 10.215.200.100/24
set service nsm responder type twamp port 12345

Step 2: Set the following configuration in DUT0:

set interfaces ethernet eth0 address 10.215.200.50/24
set service nsm operation A destination-address test.nsm.fqdn
set service nsm operation A type twamp
set service nsm operation A interval 0.05
set service nsm operation A local-interface eth0
set service nsm operation A window 100
set service nsm operation A alarm al_loss activate loss 5
set service nsm operation A alarm al_rtt activate rtt 0.2
set service nsm operation A alarm al_jitter activate jitter 0.1
set system alarm al_loss
set system alarm al_rtt
set system alarm al_jitter
set service nsm operation A destination-port 12345
set service dns static host-name testnsm alias test.nsm.fqdn
set service dns static host-name testnsm inet 10.215.200.100

Step 3: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 4: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the NSM operations have been created successfully and that the alarms are desactivated, since the network quality is good.

Note

If a packet loss rate of 50% is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said packet loss in the network and will proceed to activate the ‘al_loss’ alarm.

Step 5: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out PLOSS
set traffic control PLOSS type network-emulator packet-loss 50

Step 6: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(true)

Step 7: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(true)

Note

The previous command output should show that the ‘al_loss’ alarm is activated, since there are packet losses on the network greater than the configured threshold. As there are packet losses in the network, the delay and jitter are also affected, so ‘al_rtt’ and ‘al_jitter’ alarms are also activated since the threshold configured for them is exceeded.

Note

If the packet loss emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there is no longer packet loss and will deactivate the ‘al_loss’ alarm.

Step 8: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 9: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 10: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Note

If an additional delay of 900 ms is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said delay in the network and will proceed to activate the ‘al_rtt’ alarm.

Step 11: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out RTT
set traffic control RTT type network-emulator network-delay 900

Step 12: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_rtt)\s+(true)

Step 13: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_rtt)\s+(true)

Note

The previous command output should show that the ‘al_rtt’ alarm is activated, since there are delays on the network greater than the configured threshold.

Note

If the additional delay emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there are no longer high delays and will deactivate the ‘al_rtt’ alarm.

Step 14: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 15: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 16: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Note

If an additional jitter of 1000 ms is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said jitter in the network and will proceed to activate the ‘al_jitter’ alarm.

Step 17: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out JITTER
set traffic control JITTER type network-emulator network-delay 1 jitter 1000

Step 18: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_jitter)\s+(true)

Step 19: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_jitter)\s+(true)

Note

The previous command output should show that the ‘al_jitter’ alarm is activated, since there is a jitter on the network greater than the configured threshold.

Note

If the additional jitter emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there are no longer high jitter and will deactivate the ‘al_jitter’ alarm.

Step 20: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 21: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 22: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Test IPv6 Destination

Description

In this scenario, TWAMP NSM operations are configured in DUT0 (using an IPv6 destination address) and the TWAMP NSM responder service is configured in DUT1.

Scenario

Step 1: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 10::3/64
set service nsm responder type twamp port 12345

Step 2: Set the following configuration in DUT0:

set interfaces ethernet eth0 address 10::2/64
set service nsm operation A destination-address 10::3
set service nsm operation A type twamp
set service nsm operation A interval 0.05
set service nsm operation A local-interface eth0
set service nsm operation A window 100
set service nsm operation A alarm al_loss activate loss 5
set service nsm operation A alarm al_rtt activate rtt 0.2
set service nsm operation A alarm al_jitter activate jitter 0.1
set system alarm al_loss
set system alarm al_rtt
set system alarm al_jitter
set service nsm operation A destination-port 12345

Step 3: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 4: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the NSM operations have been created successfully and that the alarms are desactivated, since the network quality is good.

Note

If a packet loss rate of 50% is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said packet loss in the network and will proceed to activate the ‘al_loss’ alarm.

Step 5: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out PLOSS
set traffic control PLOSS type network-emulator packet-loss 50

Step 6: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(true)

Step 7: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(true)

Note

The previous command output should show that the ‘al_loss’ alarm is activated, since there are packet losses on the network greater than the configured threshold. As there are packet losses in the network, the delay and jitter are also affected, so ‘al_rtt’ and ‘al_jitter’ alarms are also activated since the threshold configured for them is exceeded.

Note

If the packet loss emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there is no longer packet loss and will deactivate the ‘al_loss’ alarm.

Step 8: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 9: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 10: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Note

If an additional delay of 900 ms is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said delay in the network and will proceed to activate the ‘al_rtt’ alarm.

Step 11: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out RTT
set traffic control RTT type network-emulator network-delay 900

Step 12: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_rtt)\s+(true)

Step 13: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_rtt)\s+(true)

Note

The previous command output should show that the ‘al_rtt’ alarm is activated, since there are delays on the network greater than the configured threshold.

Note

If the additional delay emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there are no longer high delays and will deactivate the ‘al_rtt’ alarm.

Step 14: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 15: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 16: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Note

If an additional jitter of 1000 ms is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said jitter in the network and will proceed to activate the ‘al_jitter’ alarm.

Step 17: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out JITTER
set traffic control JITTER type network-emulator network-delay 1 jitter 1000

Step 18: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_jitter)\s+(true)

Step 19: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_jitter)\s+(true)

Note

The previous command output should show that the ‘al_jitter’ alarm is activated, since there is a jitter on the network greater than the configured threshold.

Note

If the additional jitter emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there are no longer high jitter and will deactivate the ‘al_jitter’ alarm.

Step 20: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 21: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 22: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Test IPv6 FQDN Destination

Description

In this scenario, TWAMP NSM operations are configured in DUT0 (using a Fully Qualified Domain Name as the IPv6 destination address) and the TWAMP NSM responder service is configured in DUT1.

Scenario

Step 1: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 10::3/64
set service nsm responder type twamp port 12345

Step 2: Set the following configuration in DUT0:

set interfaces ethernet eth0 address 10::2/64
set service nsm operation A destination-address test.nsm.fqdn
set service nsm operation A type twamp
set service nsm operation A interval 0.05
set service nsm operation A local-interface eth0
set service nsm operation A window 100
set service nsm operation A alarm al_loss activate loss 5
set service nsm operation A alarm al_rtt activate rtt 0.2
set service nsm operation A alarm al_jitter activate jitter 0.1
set system alarm al_loss
set system alarm al_rtt
set system alarm al_jitter
set service nsm operation A destination-port 12345
set service dns static host-name testnsm alias test.nsm.fqdn
set service dns static host-name testnsm inet 10::3

Step 3: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 4: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the NSM operations have been created successfully and that the alarms are desactivated, since the network quality is good.

Note

If a packet loss rate of 50% is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said packet loss in the network and will proceed to activate the ‘al_loss’ alarm.

Step 5: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out PLOSS
set traffic control PLOSS type network-emulator packet-loss 50

Step 6: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(true)

Step 7: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(true)

Note

The previous command output should show that the ‘al_loss’ alarm is activated, since there are packet losses on the network greater than the configured threshold. As there are packet losses in the network, the delay and jitter are also affected, so ‘al_rtt’ and ‘al_jitter’ alarms are also activated since the threshold configured for them is exceeded.

Note

If the packet loss emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there is no longer packet loss and will deactivate the ‘al_loss’ alarm.

Step 8: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 9: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 10: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Note

If an additional delay of 900 ms is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said delay in the network and will proceed to activate the ‘al_rtt’ alarm.

Step 11: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out RTT
set traffic control RTT type network-emulator network-delay 900

Step 12: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_rtt)\s+(true)

Step 13: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_rtt)\s+(true)

Note

The previous command output should show that the ‘al_rtt’ alarm is activated, since there are delays on the network greater than the configured threshold.

Note

If the additional delay emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there are no longer high delays and will deactivate the ‘al_rtt’ alarm.

Step 14: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 15: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 16: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.

Note

If an additional jitter of 1000 ms is emulated in the network and we wait a reasonable amount of time, the NSM operation will detect said jitter in the network and will proceed to activate the ‘al_jitter’ alarm.

Step 17: Set the following configuration in DUT0:

set interfaces ethernet eth0 traffic control out JITTER
set traffic control JITTER type network-emulator network-delay 1 jitter 1000

Step 18: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_jitter)\s+(true)

Step 19: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_jitter)\s+(true)

Note

The previous command output should show that the ‘al_jitter’ alarm is activated, since there is a jitter on the network greater than the configured threshold.

Note

If the additional jitter emulated in the network is removed and we wait a reasonable amount of time, the NSM operation will detect that there are no longer high jitter and will deactivate the ‘al_jitter’ alarm.

Step 20: Set the following configuration in DUT0:

delete interfaces ethernet eth0 traffic control

Step 21: Run command system alarm show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Step 22: Run command service nsm operation show at DUT0 and check if output matches the following regular expressions:

(al_loss)\s+(false)
(al_rtt)\s+(false)
(al_jitter)\s+(false)

Note

The previous command output should show that the alarms are desactivated, since the network quality is good.