twamp_sender collector¶

twamp_sender connects to twamp_reflector and performs TWAMP SLA probe using one of the predefined packet models.

Configuration¶

Packet Models¶

G.711¶

G.711 voice session imitation.

G.729¶

G.729 voice session imitation.

CBR¶

Constant bitrate session, filling required bandwidth by packets of required size.

IMIX¶

Internet MIX (IMIX) packet model. Filling required bandwidth by most-commonly observed packets sizes.

Packet distribution:

Collected Metrics¶

Compilation Features¶

Enable twamp-sender feature during compiling the agent (Enabled by default).

Configuring reflectors¶

noc-agent¶

collectors:
  - id: twamp_reflector1
    type: twamp_reflector
    interval: 10
    listen: 10.0.0.1
    port: 862

where 10.0.0.1 is the reflector listen address.

Juniper JUNOS¶

chassis {
    fpc 0 {
        pic 0 {
            inline-services {
                bandwidth 1g;
            }
        }
    }
}
services {
    rpm {
            server {
                authentication-mode none;
                port 862;
                client-list Client1 {
                    address {
                        10.1.0.1/24;
                        10.1.0.2/24;
                    }
                }
            }
        }
    }
}
interfaces {
    si-0/0/0 {
        unit 0 {
            family inet;
        }
        unit 10 {
            rpm twamp-server;
            family inet {
                address 10.0.0.1/32;
            }
        }
    }
}

Where 10.0.0.1 is the reflector address, and the allowed clients are in Client1 list.

Cisco IOS¶

IOS implementation demands explicit reflector port number in session request. Sender must be configured using reflector_port parameters:

reflector_port: 9447

IOS configuration for reflector

ip sla server twamp
  exit
ip sla responder twamp
  exit