Example for Configuring TWAMP on an EVPN L3VPN

This section provides an example for configuring TWAMP on an EVPN L3VPN.

Networking Requirements

On the EVPN L3VPN 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 Example for configuring TWAMP on an EVPN L3VPN

In this example, interface1 represents GigabitEthernet 0/1/0, and interface2 represents GigabitEthernet 0/1/8.

Configuration Roadmap

The configuration roadmap is as follows:

Configure an EVPN L3VPN.
Configure the Server.
Configure the Session-Reflector.

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 an IS-IS SR-MPLS BE tunnel between DeviceA and DeviceB.
For details about the configuration roadmap, see Configuring an IS-IS SR-MPLS BE Tunnel. For configuration details, see Configuration Files.
Configure an EVPN L3VPN between DeviceA and DeviceB.
For configuration details, see Configuring an EVPN to Carry Layer 3 Services. For configuration details, see Configuration Files.

Configure the Server.

<DeviceB> system-view
[~DeviceB] nqa twamp
[*DeviceB-twamp] server
[*DeviceB-twamp-srv] tcp listen-mode any-ip
[*DeviceB-twamp-srv] tcp port 65530 vpn-instance vpna
[*DeviceB-twamp-srv] quit
[*DeviceB-twamp] quit
[*DeviceB] commit

Configure the Session-Reflector.

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

Verify the configuration.

# View TWAMP test session information on DeviceB.

[~DeviceB] display twamp test-session verbose
State                : active
Sender IP            : 192.168.2.2
Sender Port          : 65530
Reflector IP         : 192.168.1.1
Reflector Port       : 65530
Session ID           : 192.168.2.2:1039033631:FCF9C6DA
Control Session ID   : 1
Mode                 : unauthenticated
DSCP                 : 03
Padding Length       : 128
VPN Instance         : vpna
Create Time          : 2012-08-05 16:47:55
Last Start Time      : 2012-08-05 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
#               
ip vpn-instance vpna
 ipv4-family    
  route-distinguisher 200:1
  apply-label per-instance
  tnl-policy SR-MPLS-BE
  vpn-target 111:1 export-extcommunity
  vpn-target 111:1 import-extcommunity
#               
mpls lsr-id 1.1.1.3
#
mpls
#
segment-routing
 tunnel-prefer segment-routing
#
isis 1
 is-level level-2
 cost-style wide
 network-entity 00.0005.0000.0000.0012.00
 traffic-eng level-2
 segment-routing mpls
 segment-routing global-block 200000 201000
#
interface GigabitEthernet0/1/0
 undo shutdown
 ip binding vpn-instance vpna   
 ip address 192.168.2.2 255.255.255.0
#
interface GigabitEthernet0/1/8
 undo shutdown   
 ip address 172.16.1.1 255.255.255.0
 isis enable 1
 mpls
#
interface LoopBack0
 ip address 1.1.1.3 255.255.255.255
 isis enable 1
 isis prefix-sid index 20
#
bgp 100
 peer 1.1.1.2 as-number 100
 peer 1.1.1.2 connect-interface LoopBack0
 #
 ipv4-family unicast
  undo synchronization
  import-route direct
  peer 1.1.1.2 enable
 #
 ipv4-family vpnv4
  policy vpn-target
  peer 1.1.1.2 enable
 #
 ipv4-family vpn-instance vpna
  import-route direct
  peer 1.1.1.2 as-number 100
  advertise l2vpn evpn
 #
 l2vpn-family evpn
  undo policy vpn-target
  peer 1.1.1.2 enable
#
tunnel-policy SR-MPLS-BE
 tunnel select-seq lsp load-balance-number 1
#
return

DeviceB configuration file

#
sysname DeviceB
#               
ip vpn-instance vpna
 ipv4-family    
  route-distinguisher 100:1
  apply-label per-instance
  tnl-policy SR-MPLS-BE
  vpn-target 111:1 export-extcommunity
  vpn-target 111:1 import-extcommunity
#               
mpls lsr-id 1.1.1.2
#
mpls
#
segment-routing
 tunnel-prefer segment-routing
#
isis 1
 is-level level-2
 cost-style wide
 network-entity 00.0005.0000.0000.0010.00
 traffic-eng level-2
 segment-routing mpls
 segment-routing global-block 200000 201000
#
interface GigabitEthernet0/1/0
 undo shutdown
 ip binding vpn-instance vpna   
 ip address 192.168.1.1 255.255.255.0
#
interface GigabitEthernet0/1/8
 undo shutdown   
 ip address 172.17.1.1 255.255.255.0
 isis enable 1
 mpls
#
interface LoopBack0
 ip address 1.1.1.2 255.255.255.255
 isis enable 1
 isis prefix-sid index 10
#
bgp 100
 peer 1.1.1.3 as-number 100
 peer 1.1.1.3 connect-interface LoopBack0
 #
 ipv4-family unicast
  undo synchronization
  import-route direct
  peer 1.1.1.3 enable
 #
 ipv4-family vpnv4
  policy vpn-target
  peer 1.1.1.3 enable
 #
 ipv4-family vpn-instance vpna
  import-route direct
  peer 1.1.1.3 as-number 100
  advertise l2vpn evpn
 #
 l2vpn-family evpn
  undo policy vpn-target
  peer 1.1.1.3 enable
#
nqa twamp       
 server
  tcp listen-mode any-ip
  tcp port 65530 vpn-instance vpna
 reflector
#
tunnel-policy SR-MPLS-BE
 tunnel select-seq lsp load-balance-number 1
#
return