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In this section:

Caution

The SBC SWe performance metrics for simultaneous sessions under a full-fledged Denial of Service (DoS) attack for various call scenarios are summarized in the Benchmarking Results section below. Note that these numbers apply to our recommended CPU and memory configurations, and the results may vary depending on the actual CPUs used. Exceeding these simultaneous sessions metrics in conjunction with a Denial of Service attack may result in poor call performance, including longer call setup times and/or poor voice quality. It is therefore recommended to maintain call rates within the performance limits that are benchmarked below. 

 

Benchmarking Setup

The two test beds used to collect benchmarking data are depicted below.

Benchmarking Setup for SBC SWe Using Virtual NICs

 

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Benchmarking Setup for SBC SWe Configured in Pass-Through Mode (Direct I/O)

 

 

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Server and VM Details

Server and VM Details

 

Configuration

Server DetailVM Details

 

Max Link
Size

Server TypeCPU Speed
(GHz)		Processor
sockets		RAM
(GB)		HyperthreadingNetwork Interface Mode# of vCPU
allocated		Memory
(GB)		Disk Size
(GB)
Config-1HP DL380
E5-2690V2		2.99264ACTIVEPass-Through Mode
 (Direct I/O)*		4141001 Gbps
Config-2HP DL380
E5-2690V2		2.99264ACTIVEPass-Through Mode
 (Direct I/O)*		10141001 Gbps
Config-3 HP DL380
E5-2690V2		2.99164ACTIVEVirtual NIC (VMXNET3)414100350 Mbps
Config-4HP DL380
E5-2690V2		2.99164ACTIVEVirtual NIC (VMXNET3)814100350 Mbps
Config-5Dell R210v23.092116UnsupportedVirtual NIC (VMXNET3)31410070 Mbps

* Intel I-350

 

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Benchmarking Results

This section includes Sonus' benchmarking results using the following configurations with and without DoS. Please contact your Sonus representative if you are interested in benchmarking data for other call scenarios.

 

Config-1: SBC SWe Large Direct 4vCPU Configuration (Max Bandwidth: 1Gbps)

Without DoS

SBC SWe Large Direct 4vCPU Configuration (Without DoS)

Call Scenario/ConfigurationTotal Bandwidth
(Mbps)		CPS/CHT

Simultaneous
Sessions 

DoS Bandwidth
(Mbps)
G.711 pass-through408.6925/1804,5000
G.729AB pass-through291.9925/52013,0000
G.729 to G.711 transcoded4.342/571140
G.729AB pass-through sessions,TLS/SRTP enabled on Ingress105.4625/1604,0000
G.711 pass-through sessions,TLS/SRTP enabled on Ingress236.8125/1002,5000
Direct Media 78/25820,1240

With DoS

SBC SWe Large Direct 4vCPU Configuration (With DoS)

Call Scenario/ConfigurationTotal Bandwidth
(Mbps)		CPS/CHTSimultaneous
Sessions 		DoS Bandwidth
(Mbps)
G.711 pass-through955.3825/1804,500546.68
G.729AB pass-through948.6225/52013,000656.62
G.729 to G.711 transcoded949.342/57114945
G.729AB pass-through sessions,TLS/SRTP enabled on Ingress950.1825/1604,000844.71
G.711 pass-through sessions,TLS/SRTP enabled on Ingress950.0725/1002,500715.25
Direct Media953.6778/25820,124953.67

 

Config-2: SBC SWe Large Direct 10vCPU Configuration (Max Bandwidth: 1Gbps)

 

Without DoS

SBC SWe Large Direct 10vCPU Configuration (Without DoS)

Call Scenario/ConfigurationTotal Bandwidth
(Mbps)		CPS/CHTSimultaneous
Sessions 		DoS Bandwidth
(Mbps)
G.711 pass-through817.7825/3609,0000
G.729AB pass-through44925/80020,0000
G.729 to G.711 transcoded31.762/4178340
G.729AB pass-through sessions,TLS/SRTP enabled on Ingress52725/80020,0000
G.711 pass-through sessions,TLS/SRTP enabled on Ingress852.8325/3609,0000
Direct Media 198/10220,1960

With DoS

SBC SWe Large Direct 10vCPU Configuration (With DoS)

Call Scenario/ConfigurationTotal Bandwidth
(Mbps)		CPS/CHTSimultaneous
Sessions 		DoS Bandwidth
(Mbps)
G.711 pass-through950.4525/3609,000133.07
G.729AB pass-through94925/80020,000500
G.729 to G.711 transcoded9422/417834910
G.729AB pass-through sessions,TLS/SRTP enabled on Ingress949.6125/72018,000475
G.711 pass-through sessions,TLS/SRTP enabled on Ingress950.0125/3609,00097.18
Direct Media953.67198/10220,196953.67

 

Config-3: SBC SWe Large Virtual 4vCPU Configuration (Max Bandwidth: 350 Mbps)

Without DoS

SBC SWe Large Virtual 4vCPU Configuration (Without DoS)

Call Scenario/ConfigurationTotal Bandwidth
(Mbps)		CPS/CHTSimultaneous
Sessions 		DoS Bandwidth
(Mbps)
G.711 pass-through349.6525/1543,8500
G.729AB pass-through202.1425/3609,0000
G.729 to G.711 transcoded4.342/571140
G.729AB pass-through sessions,TLS/SRTP enabled on Ingress105.4825/1604,0000
G.711 pass-through sessions,TLS/SRTP enabled on Ingress260.4925/1102,7500
Direct Media 38/52619,9880

With DoS

SBC SWe Large Virtual 4vCPU Configuration (With DoS)

Call Scenario/ConfigurationTotal Bandwidth
(Mbps)		CPS/CHTSimultaneous
Sessions 		DoS Bandwidth
(Mbps)
G.729AB pass-through350.3525/2606,500204.35
G.729 to G.711 transcoded348.342/4080345
G.729AB pass-through sessions,TLS/SRTP enabled on Ingress349.9325/1604,000244.46
G.711 pass-through sessions,TLS/SRTP enabled on Ingress343.5925/1102,75083.1
Direct Media349.1438/52619,988349.14

Maximum Initial (challenged) REGISTER Rate for Config-3

The following table lists the maximum initial (challenged) REGISTER rate with background load on SWe under Large configuration VM.

Maximum Initial (challenged) REGISTER Rate with Background Load (Config-3)

 

Initial SIP 
Registration/Sec

Number of 
Subscribers

Registration Refresh
(Seconds)

SIP Calls/Sec

Concurrent G.711 (20 ms) Calls

UDP

100

32,000

30

30

2,700

 

 

Config-4: SBC SWe Large Virtual 8vCPU Configuration (Max Bandwidth: 350 Mbps)

Without DoS

SBC SWe Large Virtual 8vCPU Configuration (Without DoS)

Call Scenario/ConfigurationTotal Bandwidth
(Mbps)		CPS/CHTSimultaneous
Sessions 		DoS Bandwidth
(Mbps)
G.729AB pass-through269.5325/48012,0000
G.729 to G.711 transcoded22.622/2975940
G.729AB pass-through sessions,TLS/SRTP enabled on Ingress316.425/48012,0000
G.711 pass-through sessions,TLS/SRTP enabled on Ingress350.4825/1483,7000
Direct Media 78/25619,9680

With DoS

SBC SWe Large Virtual 8vCPU Configuration (With DoS)

Call Scenario/ConfigurationTotal Bandwidth
(Mbps)		CPS/CHTSimultaneous
Sessions 		DoS Bandwidth
(Mbps)
G.729AB pass-through349.6325/48012,00080.01
G.729 to G.711 transcoded348.342/297594325.64
G.729AB pass-through sessions,TLS/SRTP enabled on Ingress349.9325/48012,00033.38
Direct Media349.1478/25619,968349.14
     

 

Config-5: SBC SWe Small Server 3vCPU Configuration (Max Bandwidth: 70 Mbps)

 

Without DoS

SBC SWe Small Server 3vCPU Configuration (Without DoS)

Call Scenario/Configuration

Total Bandwidth
(Mbps)

CPS/CHTSimultaneous
Sessions 		DoS Bandwidth
(Mbps)
G.711 pass-through739/908100
G.729AB pass-through70.759/3503,1500
G.729 to G.711 transcoded3.041/90900
G.729AB pass-through sessions,TLS/SRTP enabled on Ingress16.619/1501.3500
G.711 pass-through sessions,TLS/SRTP enabled on Ingress59.679/706300
Direct Media70.1428/71419,99270.14

With DoS

SBC SWe Small Server 3vCPU Configuration (With DoS)

Call Scenario/ConfigurationTotal Bandwidth
(Mbps)		CPS/CHTSimultaneous
Sessions 		DoS Bandwidth
(Mbps)
G.729 to G.711 transcoded70.331/909070.14
G.729AB pass-through sessions,TLS/SRTP enabled on Ingress70.424/791,35062.08
G.711 pass-through sessions,TLS/SRTP enabled on Ingress68.269/706308.58
Direct Media70.1428/71419,99270.14

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