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play_arrow Flow Monitoring and Flow Collection Services
play_arrow Flow Capture Services
- play_arrow Dynamically Capturing Packet Flows Using Junos Capture Vision
- play_arrow Detecting Threats and Intercepting Flows Using Junos Flow-Tap and FlowTapLite Services
play_arrow Inline Monitoring Services and Inband Network Telemetry
- play_arrow Inline Monitoring Services
  - Inline Monitoring Services Configuration
- play_arrow Flow-Based Telemetry
  - Flow-Based Telemetry (EX4100, EX4100-F, and EX4400 Series)
  - Flow-Based Telemetry for VXLANs (QFX5120)
- play_arrow Inband Flow Analyzer 2.0
  - Inband Flow Analyzer (IFA) 2.0 Probe for Real-Time Flow Monitoring
- play_arrow Juniper Resiliency Interface
  - Juniper Resiliency Interface
play_arrow Sampling and Discard Accounting Services
play_arrow Real-Time Performance Monitoring and Video Monitoring Services
play_arrow Configuration Statements and Operational Commands
- Junos CLI Reference Overview

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Configuring TWAMP Client and TWAMP Server to Reconnect Automatically After TWAMP Server Unavailability

date_range 01-Dec-23

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You can run TWAMP client automatically without any manual intervention during network failures or configuration changes. In case of a network outage or connection loss between a TWAMP client and TWAMP server, all the affected TWAMP TCP control connections and UDP test-sessions are lost. At each test-interval, the TWAMP client continues to send the control packets to re-establish connectivity with TWAMP server till is successful. All the statistics will be maintained during that network failure.

This procedure is for Junos OS only. To configure the TWAMP client:

Configure the interfaces.

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[edit interfaces]
user@router1# set si-2/2/0 unit 0 family inet
user@router1# set si-2/2/0 unit 10 rpm twamp-client
user@router1# set si-2/2/0 unit 10 family inet address 192.168.20.1/32

Configure the chassis.

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[edit chassis]
user@router1# set fpc 2 pic 2 inline-services bandwidth 1g

Configure the services.

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[edit services]
user@router1# set rpm twamp client control-connection c1 destination-interface si-2/2/0.10
user@router1# set rpm twamp client control-connection c1 persistent-results
user@router1# set rpm twamp client control-connection c1 history-size 500
user@router1# set rpm twamp client control-connection c1 routing instance IN
user@router1# set rpm twamp client control-connection c1 target-address 192.0.2.2
user@router1# set rpm twamp client control-connection c1 tcp-keepidle 20
user@router1# set rpm twamp client control-connection c1 tcp-keepintvl 4
user@router1# set rpm twamp client control-connection c1 tcp-keepcnt 10
user@router1# set rpm twamp client control-connection c1 test-interval 4
user@router1# set rpm twamp client control-connection c1 traps control-connection-closed
user@router1# set rpm twamp client control-connection c1 test-session t1 target-address  192.0.2.2
user@router1# set rpm twamp client control-connection c1 test-session t1 data-fill-with-zeros
user@router1# set rpm twamp client control-connection c1 test-session t1 data-size 1400
user@router1# set rpm twamp client control-connection c1 test-session t1 probe-count 20
user@router1# set rpm twamp client control-connection c1 test-session t1 probe-interval 1
user@router1# set rpm twamp client control-connection c1 test-session t2 target-address  192.0.2.2
user@router1# set rpm twamp client control-connection c1 test-session t1 data-fill-with-zeros
user@router1# set rpm twamp client control-connection c1 test-session t1 data-size 1400
user@router1# set rpm twamp client control-connection c1 test-session t1 probe-count 20
user@router1# set rpm twamp client control-connection c1 test-session t1 probe-interval 1
user@router1# set rpm twamp client control-connection c1 test-session t1 thresholds total-loss 10
user@router1# set rpm twamp client control-connection c1 test-session t1 thresholds jitter-gress 20
user@router1# set rpm twamp client control-connection c1 test-session t2 target-address  192.0.3.1
user@router1# set rpm twamp client control-connection c1 test-session t2 data-fill-with-zeros
user@router1# set rpm twamp client control-connection c1 test-session t2 data-size 1400
user@router1# set rpm twamp client control-connection c1 test-session t2 probe-count 15
user@router1# set rpm twamp client control-connection c1 test-session t2 probe-interval 1
user@router1# set rpm twamp client control-connection c1 test-session t2 thresholds total-loss 10
user@router1# set rpm twamp client control-connection c1 test-session t2 thresholds jitter-gress 20

To configure the TWAMP server:

Configure the interfaces.

content_copy zoom_out_map
[edit interfaces]
user@router1# set si-1/1/0 unit 30 family inet
user@router1# set si-1/1/0 unit 30 rpm twamp-server
user@router1# set si-1/1/0 unit 30 family inet address 192.02.2/24

Configure the chassis.

content_copy zoom_out_map
[edit chassis]
user@router1# set fpc 1 pic 1 inline-services bandwidth 1g

Configure the services.

content_copy zoom_out_map
[edit services]
user@router1# set rpm twamp server tcp-keepidle 200
user@router1# set rpm twamp server tcp-keepintvl 20
user@router1# set rpm twamp server tcp-keepcnt 210
user@router1# set rpm twamp server authentication-mode none
user@router1# set rpm twamp server server-inactivity-timeout 5
user@router1# set rpm twamp server reflector-inactivity-timeout 15
user@router1# set rpm twamp server max-connection-duration 0
user@router1# set rpm twamp server maximum-sessions 100
user@router1# set rpm twamp server maximum-sessions-per-connection 50
user@router1# set rpm twamp server maximum-connections 500
user@router1# set rpm twamp server maximum-connections-per-client 500
user@router1# set rpm twamp server port 862
user@router1# set rpm twamp server client-list Client1 address 192.168.20.1/24

When the TWAMP server is reachable, the output for Junos OS is as follows. The TWAMP-Server-Status is Connected and the Number-Of-Retries-With-TWAMP-Server is 1

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user@router1> show services rpm twamp client probe-results | no-more
Jan 11 11:43:42
    Owner: c1, Test: t1
    server-address: 192.0.2.2, server-port: 862, Client address: 192.168.20.1, Client port: 58991
    TWAMP-Server-Status: Connected, Number-Of-Retries-With-TWAMP-Server: 1
    Routing Instance Name: IN
    Destination interface name: si-2/2/0.10
    Test size: 20 probes
    Probe results:
      Response received
      Probe sent time: Fri Jan 11 11:43:41 2019
      Probe rcvd/timeout time: Fri Jan 11 11:43:41 2019
      Rtt: 57 usec, Egress jitter: 1 usec, Ingress jitter: -1 usec, Round trip jitter: 0 usec
      Egress interarrival jitter: 43 usec, Ingress interarrival jitter: 43 usec, Round trip interarrival jitter: 1 usec
    Results over current test:

.......
........
    Owner: c1, Test: t2
    server-address: 192.0.2.2, server-port: 862, Client address: 192.168.20.1, Client port: 58991
    TWAMP-Server-Status: Connected, Number-Of-Retries-With-TWAMP-Server: 1
    Routing Instance Name: IN
    Destination interface name: si-2/2/0.10
    Test size: 15 probes
   Probe results:
      Response received
      Probe sent time: Fri Jan 11 11:43:36 2019
      Probe rcvd/timeout time: Fri Jan 11 11:43:36 2019
      Rtt: 58 usec, Egress jitter: 1 usec, Ingress jitter: -1 usec, Round trip jitter: 0 usec
      Egress interarrival jitter: 28 usec, Ingress interarrival jitter: 28 usec, Round trip interarrival jitter: 0 usec
    Results over current test:
      Probes sent: 15, Probes received: 15, Loss percentage: 0.000000
      Measurement: Round trip time
        Samples: 15, Minimum: 57 usec, Maximum: 59 usec, Average: 58 usec, Peak to peak: 2 usec, Stddev: 1 usec, Sum: 866 usec
      Measurement: Positive egress jitter

........
    Measurement: Round trip time
        Samples: 105, Minimum: 57 usec, Maximum: 59 usec, Average: 58 usec, Peak to peak: 2 usec, Stddev: 1 usec, Sum: 6062 usec
      Measurement: Positive egress jitter
        Samples: 77, Minimum: 0 usec, Maximum: 398 usec, Average: 12 usec, Peak to peak: 398 usec, Stddev: 63 usec, Sum: 925 usec
      Measurement: Negative egress jitter
        Samples: 18, Minimum: 16 usec, Maximum: 431 usec, Average: 69 usec, Peak to peak: 415 usec, Stddev: 91 usec, Sum: 1248 usec
      Measurement: Positive ingress jitter
        Samples: 19, Minimum: 0 usec, Maximum: 431 usec, Average: 66 usec, Peak to peak: 431 usec, Stddev: 90 usec, Sum: 1249 usec
      Measurement: Negative ingress jitter
        Samples: 76, Minimum: 1 usec, Maximum: 397 usec, Average: 12 usec, Peak to peak: 396 usec, Stddev: 63 usec, Sum: 922 usec
      Measurement: Positive round trip jitter
        Samples: 79, Minimum: 0 usec, Maximum: 1 usec, Average: 0 usec, Peak to peak: 1 usec, Stddev: 0 usec, Sum: 26 usec
      Measurement: Negative round trip jitter
        Samples: 25, Minimum: 1 usec, Maximum: 1 usec, Average: 1 usec, Peak to peak: 0 usec, Stddev: 0 usec, Sum: 25 usec

After the server is deactivated using the command deactivate interfaces si-1/1/0 unit 30, the output is as follows for Junos OS. The TWAMP-Server-Status is Not Connected and the Number-Of-Retries-With-TWAMP-Server is 12:

content_copy zoom_out_map
user@router1> show services rpm twamp client probe-results control-connection c1 | no-more
Jan 11 11:48:24
    Owner: c1, Test: t1
    server-address: 192.0.2.2, server-port: 862, Client address: 192.168.20.1, Client port: 58991
    TWAMP-Server-Status: Not Connected, Number-Of-Retries-With-TWAMP-Server: 12
    Reflector address: 192.0.2.2, Reflector port: 14779, Sender address: 192.168.20.1, sender-port: 14779
    Routing Instance Name: IN
    Destination interface name: si-2/2/0.10
    Test size: 20 probes
    Probe results:
      Response received
      Probe sent time: Fri Jan 11 11:45:38 2019
      Probe rcvd/timeout time: Fri Jan 11 11:45:38 2019
      Rtt: 55 usec, Egress jitter: -17 usec, Ingress jitter: 18 usec, Round trip jitter: 1 usec
      Egress interarrival jitter: 37 usec, Ingress interarrival jitter: 37 usec, Round trip interarrival jitter: 0 usec
    Results over current test:
      Probes sent: 10, Probes received: 10, Loss percentage: 0.000000
      Measurement: Round trip time

.........
   Samples: 17, Minimum: 0 usec, Maximum: 3 usec, Average: 0 usec, Peak to peak: 3 usec, Stddev: 1 usec, Sum: 4 usec
      Measurement: Negative round trip jitter
        Samples: 3, Minimum: 1 usec, Maximum: 3 usec, Average: 2 usec, Peak to peak: 2 usec, Stddev: 1 usec, Sum: 5 usec
    Results over all tests:
      Probes sent: 210, Probes received: 210, Loss percentage: 0.000000


........

TWAMP-Server-Status: Not Connected, Number-Of-Retries-With-TWAMP-Server: 12
    Reflector address: 192.0.2.2, Reflector port: 14778, Sender address: 192.168.20.1, sender-port: 14778
    Routing Instance Name: IN
    Destination interface name: si-2/2/0.10
    Test size: 15 probes
    Probe results:
      Response received
      Probe sent time: Fri Jan 11 11:45:38 2019
      Probe rcvd/timeout time: Fri Jan 11 11:45:38 2019
      Rtt: 58 usec, Egress jitter: -18 usec, Ingress jitter: 19 usec, Round trip jitter: 0 usec

..........
    Results over all tests:
      Probes sent: 160, Probes received: 160, Loss percentage: 0.000000
      Measurement: Round trip time
        Samples: 160, Minimum: 57 usec, Maximum: 59 usec, Average: 58 usec, Peak to peak: 2 usec, Stddev: 1 usec, Sum: 9232 usec
      Measurement: Positive egress jitter
        Samples: 119, Minimum: 0 usec, Maximum: 398 usec, Average: 12 usec, Peak to peak: 398 usec, Stddev: 62 usec, Sum: 1398 usec
      Measurement: Negative egress jitter
        Samples: 27, Minimum: 16 usec, Maximum: 431 usec, Average: 64 usec, Peak to peak: 415 usec, Stddev: 76 usec, Sum: 1723 usec
      Measurement: Positive ingress jitter
        Samples: 28, Minimum: 0 usec, Maximum: 431 usec, Average: 62 usec, Peak to peak: 431 usec, Stddev: 76 usec, Sum: 1727 usec
      Measurement: Negative ingress jitter
        Samples: 118, Minimum: 1 usec, Maximum: 397 usec, Average: 12 usec, Peak to peak: 396 usec, Stddev: 62 usec, Sum: 1400 usec
      Measurement: Positive round trip jitter
        Samples: 120, Minimum: 0 usec, Maximum: 1 usec, Average: 0 usec, Peak to peak: 1 usec, Stddev: 0 usec, Sum: 39 usec
      Measurement: Negative round trip jitter
        Samples: 39, Minimum: 1 usec, Maximum: 1 usec, Average: 1 usec, Peak to peak: 0 usec, Stddev: 0 usec, Sum: 39 usec

After activating the server using the activate interfaces si-1/1/0 unit 30 command the output is as follows for Junos OS. The TWAMP-Server-Status is Connected and the Number-Of-Retries-With-TWAMP-Server is 12.

content_copy zoom_out_map
user@router1> show services rpm twamp client probe-results control-connection c1 | no-more
Jan 11 11:48:50
    Owner: c1, Test: t1
    server-address: 192.0.2.2, server-port: 862, Client address: 192.168.20.1, Client port: 58991
    TWAMP-Server-Status: Connected, Number-Of-Retries-With-TWAMP-Server: 12
    Reflector address: 192.0.2.2, Reflector port: 14963, Sender address: 192.168.20.1, sender-port: 14963
    Routing Instance Name: IN
    Destination interface name: si-2/2/0.10
    Test size: 20 probes
    Probe results:
      Response received
      Probe sent time: Fri Jan 11 11:48:50 2019
      Probe rcvd/timeout time: Fri Jan 11 11:48:50 2019

.....
Results over all tests:
      Probes sent: 218, Probes received: 218, Loss percentage: 0.000000 
      Measurement: Round trip time
        Samples: 218, Minimum: 54 usec, Maximum: 59 usec, Average: 56 usec, Peak to peak: 5 usec, Stddev: 1 usec, Sum: 12160 usec

......
    Owner: c1, Test: t2
    server-address: 192.0.2.2, server-port: 862, Client address: 192.168.20.1, Client port: 58991
    TWAMP-Server-Status: Connected, Number-Of-Retries-With-TWAMP-Server: 12
    Reflector address: 192.0.2.2, Reflector port: 14962, Sender address: 192.168.20.1, sender-port: 14962
    Routing Instance Name: IN
    Destination interface name: si-2/2/0.10
    Test size: 15 probes
    Probe results:
      Response received
      Probe sent time: Fri Jan 11 11:48:50 2019
      Probe rcvd/timeout time: Fri Jan 11 11:48:50 2019
      Rtt: 57 usec, Egress jitter: 2 usec, Ingress jitter: -3 usec, 
......
Results over all tests:
      Probes sent: 168, Probes received: 168, Loss percentage: 0.000000
      Measurement: Round trip time
        Samples: 168, Minimum: 57 usec, Maximum: 59 usec, Average: 58 usec, Peak to peak: 2 usec, Stddev: 1 usec, Sum: 9691 usec
      Measurement: Positive egress jitter
        Samples: 124, Minimum: 0 usec, Maximum: 398 usec, Average: 11 usec, Peak to peak: 398 usec, Stddev: 61 usec, Sum: 1406 usec
      Measurement: Negative egress jitter
        Samples: 29, Minimum: 16 usec, Maximum: 431 usec, Average: 62 usec, Peak to peak: 415 usec, Stddev: 74 usec, Sum: 1806 usec
      Measurement: Positive ingress jitter
        Samples: 30, Minimum: 0 usec, Maximum: 431 usec, Average: 60 usec, Peak to peak: 431 usec, Stddev: 74 usec, Sum: 1811 usec
      Measurement: Negative ingress jitter
        Samples: 123, Minimum: 1 usec, Maximum: 397 usec, Average: 11 usec, Peak to peak: 396 usec, Stddev: 61 usec, Sum: 1410 usec
      Measurement: Positive round trip jitter
        Samples: 125, Minimum: 0 usec, Maximum: 1 usec, Average: 0 usec, Peak to peak: 1 usec, Stddev: 0 usec, Sum: 42 usec
      Measurement: Negative round trip jitter
        Samples: 42, Minimum: 1 usec, Maximum: 1 usec, Average: 1 usec, Peak to peak: 0 usec, Stddev: 0 usec, Sum: 42 usec

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