TX Profile#

Rate Fraction#

The rate of the traffic transmitted for a stream expressed in millionths of the effective rate for the port. The bandwidth consumption includes the inter-frame gap and is independent of the length of the packets generated for the stream. The sum of the bandwidth consumption for all the enabled streams must not exceed the effective rate for the port. Setting this command also instructs the Manager to attempt to keep the rate-percentage unchanged in case it has to cap stream rates. Get value is only valid if the rate was last set using this command.

Corresponding CLI command: PS_RATEFRACTION

# Rate Fraction
await stream.rate.fraction.set(stream_rate_ppm=1_000_000)

resp = await stream.rate.fraction.get()
resp.stream_rate_ppm

Packet Rate#

The rate of the traffic transmitted for a stream expressed in packets per second. The bandwidth consumption is heavily dependent on the length of the packets generated for the stream, and also on the inter-frame gap for the port. The sum of the bandwidth consumption for all the enabled streams must not exceed the effective rate for the port. Setting this command also instructs the Manager to attempt to keep the packets-per-second unchanged in case it has to cap stream rates. Get value is only valid if the rate was the last set using this command.

Corresponding CLI command: PS_RATEPPS

a# Packet Rate
await stream.rate.pps.set(stream_rate_pps=1_000)

resp = await stream.rate.pps.get()
resp.stream_rate_pps

Bit Rate L2#

The rate of the traffic transmitted for a stream, expressed in units of bits- per-second at layer-2, thus including the Ethernet header but excluding the inter-frame gap. The bandwidth consumption is somewhat dependent on the length of the packets generated for the stream, and also on the inter-frame gap for the port. The sum of the bandwidth consumption for all the enabled streams must not exceed the effective rate for the port. Setting this command also instructs the Manager to attempt to keep the layer-2 bps rate unchanged in case it has to cap stream rates. Get value is only valid if the rate was the last set using this command.

Corresponding CLI command: PS_RATEL2BPS

# Bit Rate L2
await stream.rate.l2bps.set(l2_bps=1_000_000)

resp = await stream.rate.l2bps.get()
resp.l2_bps

Packet Limit#

Corresponding CLI command: PS_RATEPPS

# Packet Limit
await stream.packet.limit.set(packet_count=1_000)

resp = await stream.packet.limit.get()
resp.packet_count

Burst Size and Density#

The burstiness of the traffic transmitted for a stream, expressed in terms of the number of packets in each burst, and how densely they are packed together. The burstiness does not affect the bandwidth consumed by the stream, only the spacing between the packets. A density value of 100 means that the packets are packed tightly together, only spaced by the minimum inter-frame gap. A value of 0 means even, non-bursty, spacing. The exact spacing achieved depends on the other enabled streams of the port.

Corresponding CLI command: PS_BURST

# Burst Size and Density
await stream.burst.burstiness.set(size=20, density=80)

resp = await stream.burst.burstiness.get()
resp.size
resp.density

Inter Burst/Packet Gap#

When the port is in in Burst TX mode, this command defines the gap between packets in a burst (inter-packet gap) and the gap after a burst defined in one stream stops until a burst defined in the next stream starts (inter-burst gap).

Corresponding CLI command: PS_BURSTGAP

# Inter Burst/Packet Gap
await stream.burst.gap.set(inter_packet_gap=30, inter_burst_gap=30)

resp = await stream.burst.gap.get()
resp.inter_packet_gap
resp.inter_burst_gap

Priority Flow#

Set and get the Priority Flow Control (PFC) Cos value of a stream.

Corresponding CLI command: PS_PFCPRIORITY

# Priority Flow
await stream.priority_flow.set(cos=enums.PFCMode.ZERO)
await stream.priority_flow.set(cos=enums.PFCMode.ONE)
await stream.priority_flow.set(cos=enums.PFCMode.TWO)
await stream.priority_flow.set(cos=enums.PFCMode.THREE)
await stream.priority_flow.set(cos=enums.PFCMode.FOUR)
await stream.priority_flow.set(cos=enums.PFCMode.FIVE)
await stream.priority_flow.set(cos=enums.PFCMode.SIX)
await stream.priority_flow.set(cos=enums.PFCMode.SEVEN)
await stream.priority_flow.set(cos=enums.PFCMode.VLAN_PCP)

resp = await stream.priority_flow.get()
resp.cos