Example: Configuring TWAMP Client and Server on MX Series Routers
This example shows how to configure the TWAMP client and server and contains the following sections.
Requirements
This example uses the following hardware and software components:
-
MX Series routers.
-
Junos OS Release 15.1 or later.
Overview
This example explains the Two-Way Active Measurement Protocol (TWAMP). TWAMP is an open protocol for measuring network performance between any two devices supporting the TWAMP protocol. The TWAMP-Control protocol is used to set up performance measurement sessions. The TWAMP-Test protocol is used to send and receive performance measurement probes.
The TWAMP architecture is composed of the following entities that are responsible for starting a monitoring session and exchanging packets:
-
The control client initiates all requested test sessions with a start sessions message, and the server acknowledges. When necessary, the control client sends a message to stop all test sessions.
-
The session sender and the session reflector exchange test packets according to the TWAMP-Test protocol for each active session. On receiving a TWAMP-Test packet, the session reflector only reflects a measurement packet and does not collect packet statistics in TWAMP.
The TWAMP server is an end system that manages one or more TWAMP sessions and is also capable of configuring per-session ports. The server listens on the TCP port. The session reflector and server make up the TWAMP responder in an IP service-level agreement operation.
For 15.1, both the control client and session sender would be residing on the same Juniper router. The client design does not mandate the server and the session reflector to be on the same system. Hence the Juniper TWAMP client will also be capable of working with a third-party server implementation.
Configuration for TWAMP client
CLI Quick Configuration
To quickly configure this example, copy the following commands, paste them into a text file, remove any line breaks, change any details necessary to match your network configuration, and then copy and paste the commands into the CLI, at the [edit] hierarchy level, of SG1 router.
Configuring Chassis
set chassis fpc 4 pic 1 inline-services bandwidth 1g
Configuring Interfaces
set interfaces si-4/1/0 unit 0 family inet set interfaces si-4/1/0 unit 10 rpm twamp-client set interfaces si-4/1/0 unit 10 family inet address 10.60.60.1/32
Configuring Services
set services rpm twamp client control-connection c1 destination-interface si-4/1/0.10 set services rpm twamp client control-connection c1 history-size 500 set services rpm twamp client control-connection c1 target-address 10.70.70.1 set services rpm twamp client control-connection c1 test-count 1 set services rpm twamp client control-connection c1 test-interval 1 set services rpm twamp client control-connection c1 traps test-iteration-done set services rpm twamp client control-connection c1 traps control-connection-closed set services rpm twamp client control-connection c1 test-session t1 target-address 10.70.70.1 set services rpm twamp client control-connection c1 test-session t1 data-fill-with-zeros set services rpm twamp client control-connection c1 test-session t1 data-size 1400 set services rpm twamp client control-connection c1 test-session t1 probe-count 55 set services rpm twamp client control-connection c1 test-session t1 probe-interval 1
Configuring TWAMP client
Step-by-Step Procedure
The following example requires you to navigate various levels in the configuration hierarchy.
-
Configure the chassis.
[edit chassis] user@router1# set fpc 4 pic 1 inline-services bandwidth 1g
-
Configure the interfaces.
[edit interfaces] user@router1# set si-4/1/0 unit 0 family inet user@router1# set si-4/1/0 unit 10 rpm twamp-client user@router1# set si-4/1/0 unit 10 family inet address 10.60.60.1/32
-
Configure the services.
[edit services] user@router1# set rpm twamp client control-connection c1 destination-interface si-4/1/0.10 user@router1# set rpm twamp client control-connection c1 history-size 500 user@router1# set rpm twamp client control-connection c1 target-address 10.70.70.1 user@router1# set rpm twamp client control-connection c1 test-count 1 user@router1# set rpm twamp client control-connection c1 test-interval 1 user@router1# set rpm twamp client control-connection c1 traps test-iteration-done 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 10.70.70.1 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 55 user@router1# set rpm twamp client control-connection c1 test-session t1 probe-interval 1
Results
From the configuration mode of Router 1, confirm your configuration by
entering the show chassis, show
interfaces, and show services rpm twamp commands.
If the output does not display the intended configuration, repeat the
instructions in this example to correct the configuration.
user@router1# show chassis
fpc 4 {
pic 1 {
inline-services {
bandwidth 1g;
}
}
}
user@router1# show interfaces
si-4/1/0 {
unit 0 {
family inet;
}
unit 10 {
rpm twamp-client;
family inet {
address 10.60.60.1/32;
}
}
}
user@router1# show services rpm twamp
client {
control-connection c1 {
destination-interface si-4/1/0.10;
history-size 500;
target-address 10.70.70.1;
test-count 1;
test-interval 1;
traps {
test-iteration-done;
control-connection-closed;
}
test-session t1 {
target-address 10.70.70.1;
data-fill-with-zeros;
data-size 1400;
probe-count 55;
probe-interval 1;
}
}
}
Configuration for TWAMP server
CLI Quick Configuration
To quickly configure this example, copy the following commands, paste them into a text file, remove any line breaks, change any details necessary to match your network configuration, and then copy and paste the commands into the CLI, at the [edit] hierarchy level, of SG1 router.
Configuring Chassis
set chassis fpc 2 pic 1 inline-services bandwidth 1g
Configuring Interfaces
set interfaces si-2/1/0 unit 0 family inet set interfaces si-2/1/0 unit 10 rpm twamp-server set interfaces si-2/1/0 unit 10 family inet address 10.70.70.1/32
Configuring Services
set services rpm twamp server authentication-mode none set services rpm twamp server port 862 set services rpm twamp server client-list Client1 address 10.60.60.1/32
Configuring TWAMP server
Step-by-Step Procedure
The following example requires you to navigate various levels in the configuration hierarchy.
-
Configure the chassis.
[edit chassis] user@router1# set fpc 2 pic 1 inline-services bandwidth 1g
-
Configure the interfaces.
[edit interfaces] user@router1#set si-2/1/0 unit 0 family inet user@router1#set si-2/1/0 unit 10 rpm twamp-server user@router1#set si-2/1/0 unit 10 family inet address 10.70.70.1/32
-
Configure the services.
[edit services] user@router1# set rpm twamp server authentication-mode none user@router1# set rpm twamp server port 862 user@router1# set rpm twamp server client-list Client1 address 10.60.60.1/32
Results
From the configuration mode of Router 1, confirm your configuration by
entering the show chassis, show
interfaces, and show services rpm twamp server
commands. If the output does not display the intended configuration, repeat
the instructions in this example to correct the configuration.
user@router1# show chassis
fpc 2 {
pic 1 {
inline-services {
bandwidth 1g;
}
}
}
user@router1# show interfaces
si-2/1/0 {
unit 0 {
family inet;
}
unit 10 {
rpm twamp-server;
family inet {
address 10.70.70.1/32;
}
}
}
user@router1# show services rpm twamp server
authentication-mode none;
port 862;
client-list Client1 {
address {
10.60.60.1/32;
}
}
Verification
Verifying TWAMP server sessions
Purpose
Verify that the TWAMP server sessions are established.
Action
From operational mode, enter the show services rpm twamp server
session command.
user@router1> show services rpm twamp server session
Session Connection Sender Sender Reflector Reflector
ID ID address port address port
4 44 10.1.1.1 12345 192.168.219.203 890
78 44 10.22.1.55 345 10.22.2.2 89022
234 423 192.168.219.203 2345 10.2.22.2 3333
5 423 10.4.1.1 82345 10.2.2.2 45909
1 423 192.168.1.1 645 10.32.2.2 2394
Verifying TWAMP client sessions
Purpose
Verify that the TWAMP client sessions are established.
Action
From operational mode, enter the show services rpm twamp client
session command.
user@router1> show services rpm twamp client session
Connection Session Sender Sender Reflector Reflector
Name Name address port address port
c2 t1 10.60.60.1 10008 10.70.70.1 10008