Example for Configuring TWAMP on an L3 VXLAN

This section provides an example for configuring TWAMP functions on an L3 VXLAN.

Networking Requirements

On the L3 VXLAN shown in Figure 1, DeviceB functions as the Server (supports only passive measurement) in a TWAMP test. DeviceA functions as the Control-Client. It initiates statistics collection by specifying the IP address of DeviceB. DeviceA then sends collected statistics to the performance management system.

DeviceA must be able to function as the Controller. Data is sent using data collection technology such as telemetry. For details about the configuration procedure, see the corresponding third-party product manual.

Figure 1 Configuring TWAMP on an L3 VXLAN

In this example, interface1 represents GigabitEthernet 0/1/0.

Configuration Roadmap

The configuration roadmap is as follows:

Configure a VXLAN tunnel between DeviceA and DeviceB.
Configure the Server on DeviceB.
Configure the Session-Reflector on DeviceB.

Data Preparation

To complete the configuration, you need the following data:

IP addresses of interfaces connecting devices
TCP port number

Procedure

Assign an IP address to each node interface, including the loopback interface.
For configuration details, see Configuration Files.
Configure an IGP (IS-IS in this example) on the backbone network.
For configuration details, see Configuration Files.

Configure a VXLAN tunnel between DeviceA and DeviceB.

For details about the configuration roadmap, see VXLAN Configuration. For configuration details, see Configuration Files.

After a VXLAN tunnel is established, you can run the display vxlan tunnel command on DeviceA to view VXLAN tunnel information.

[~DeviceA] display vxlan tunnel
Number of vxlan tunnel : 1
Tunnel ID   Source                Destination           State  Type     Uptime
-----------------------------------------------------------------------------------
4026531841  1.1.1.1               2.2.2.2               up     dynamic  00:12:56

Set the forwarding mode of the VXLAN tunnel to hardware loopback.
# Configure DeviceA.
```
[~DeviceA] global-gre forward-mode loopback
```
# Configure DeviceB.
```
[~DeviceB] global-gre forward-mode loopback
```

Configure the Server.

[*DeviceB] nqa twamp
[*DeviceB-twamp] server
[*DeviceB-twamp-srv] tcp listen-mode any-ip
[*DeviceB-twamp-srv] tcp port 65530 vpn-instance vpn1
[*DeviceB-twamp-srv] quit

Configure the Session-Reflector.

[*DeviceB-twamp] reflector
[*DeviceB-twamp-ref] quit
[*DeviceB-twamp] quit
[*DeviceB] commit

Verify the configuration.

# View global TWAMP information on DeviceB.

[~DeviceB] display twamp global-info
Start Time                       : 2019-08-05 16:47:55
Control Session Numbers          : 10
Control Session Rejected Numbers : 0
Test Session Numbers             : 10
Test Session Completed Numbers   : 10
Test Session Aborted Numbers     : 0
Test Tx Numbers                  : 100
Test Rx Numbers                  : 100

# View TWAMP control session information on DeviceB.

[~DeviceB] display twamp control-session verbose
State                : active
Control Session ID   : 0
Client IP            : 192.168.1.1
Client Port          : 65530
Server IP            : 192.168.2.2
Server Port          : 65530
VPN Instance         : -
Mode                 : unauthenticated
Inactivity Time(s)   : -
Test Session Number  : 10 
Created Time         : 2019-08-05 16:47:55
Normal Stop          : 100
Abort Stop           : 10

# View TWAMP test session information on DeviceB.

[~DeviceB] display twamp test-session verbose
State                : active
Sender IP            : 192.168.1.1
Sender Port          : 65530
Reflector IP         : 192.168.2.2
Reflector Port       : 65530
Session ID           : 192.168.2.1:1039033631:FCF9C6DA
Control Session ID   : 1
Mode                 : unauthenticated
DSCP                 : 03
Padding Length       : 128
VPN Instance         : vpn1
Create Time          : 2019-08-05 16:47:55
Last Start Time      : 2019-08-05 16:47:55
Last Stop Time       : never
Sequence Number      : 2000
Test Tx Numbers      : 100
Test Rx Numbers      : 100
Test Discard Numbers : 0

Configuration Files

DeviceA configuration file

#
sysname DeviceA
#
evpn vpn-instance evrf3 bd-mode
 route-distinguisher 10:1
 apply-label per-instance
 vpn-target 11:1 export-extcommunity
 vpn-target 11:1 import-extcommunity
#
ip vpn-instance vpn1
 ipv4-family
  route-distinguisher 11:11
  apply-label per-instance
  vpn-target 1:1 export-extcommunity
  vpn-target 11:1 export-extcommunity evpn
  vpn-target 1:1 import-extcommunity
  vpn-target 11:1 import-extcommunity evpn
 vxlan vni 5010
#
bridge-domain 10
 vxlan vni 10 split-horizon-mode
 evpn binding vpn-instance evrf3
#
isis 1
 network-entity 10.0000.0000.0001.00
#
interface Vbdif10
 ip binding vpn-instance vpn1
 ip address 10.1.1.1 255.255.255.0
 arp distribute-gateway enable
 arp collect host enable
#
interface GigabitEthernet0/1/0
 undo shutdown
 ip address 192.168.1.1 255.255.255.0
 isis enable 1
#
interface LoopBack0
 ip address 1.1.1.1 255.255.255.255
 isis enable 1
#
interface Nve1
 source 1.1.1.1
 vni 10 head-end peer-list protocol bgp
#
bgp 100
 peer 2.2.2.2 as-number 100
 peer 2.2.2.2 connect-interface LoopBack0
 #
 ipv4-family unicast
  undo synchronization
  peer 2.2.2.2 enable
 #
 l2vpn-family evpn
  undo policy vpn-target
  peer 2.2.2.2 enable
  peer 2.2.2.2 advertise irb
  peer 2.2.2.2 advertise encap-type vxlan
#
global-gre forward-mode loopback
#
return

DeviceB configuration file

#
sysname DeviceB
#
evpn vpn-instance evrf3 bd-mode
 route-distinguisher 20:1
 apply-label per-instance
 vpn-target 11:1 export-extcommunity
 vpn-target 11:1 import-extcommunity
#
ip vpn-instance vpn1
 ipv4-family
  route-distinguisher 22:22
  apply-label per-instance
  vpn-target 2:2 export-extcommunity
  vpn-target 11:1 export-extcommunity evpn
  vpn-target 2:2 import-extcommunity
  vpn-target 11:1 import-extcommunity evpn
 vxlan vni 5010
#
bridge-domain 20
 vxlan vni 20 split-horizon-mode
 evpn binding vpn-instance evrf3
#
isis 1
 network-entity 10.0000.0000.0002.00
#
interface Vbdif20
 ip binding vpn-instance vpn1
 ip address 10.2.1.1 255.255.255.0
 arp distribute-gateway enable
 arp collect host enable
#
interface GigabitEthernet0/1/0
 undo shutdown
 ip address 192.168.2.2 255.255.255.0
 isis enable 1
#
interface LoopBack0
 ip address 2.2.2.2 255.255.255.255
 isis enable 1
#
interface Nve1
 source 2.2.2.2
 vni 20 head-end peer-list protocol bgp
#
bgp 100
 peer 1.1.1.1 as-number 100
 peer 1.1.1.1 connect-interface LoopBack0
 #
 ipv4-family unicast
  undo synchronization
  peer 1.1.1.1 enable
 #
 l2vpn-family evpn
  undo policy vpn-target
  peer 1.1.1.1 enable
  peer 1.1.1.1 advertise irb
  peer 1.1.1.1 advertise encap-type vxlan
#
nqa twamp       
 server
  tcp listen-mode any-ip
  tcp port 65530 vpn-instance vpn1
 reflector
#
global-gre forward-mode loopback
#
return