Figure 8 NetQoS Results for Test 1 223843 WAN Branch WAE Branch Router VLAN 300

Figure 8 netqos results for test 1 223843 wan branch

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Figure 8 NetQoS Results for Test 1 223843 WAN Branch WAE Branch Router VLAN 300 VLAN 301 Send 43.9 MG WAAS OFF Volume = 43,985,176 Avg pps = 293 kbps Volume = 43,985,176 Avg pps = 293 kbps Volume = 43,985,176 Avg pps = 293 kbps WAAS OFF K-PACS DICOM Data Center WAN Edge Router 1 Data Center WAE K-PACS DICOM 3 2
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14 DICOM Traffic Performance and WAAS Application Deployment Guide OL-16162-01 Testing Results Test 2: With WAAS On, No Caching Test 2 was performed with WAAS turned ON and object caching turned OFF for both the branch and data center WAEs. Test Results Data transferred from branch modality to DC PACS server = 43,985,176. Location #1: Branch modality to branch WAE Volume = 43.9MB Average pps = 391 Kbps Location #2: Branch WAE to DC WAE (WAN) Volume = 27.9 MB Average pps = 186 Kbps Location #3: DC WAE to DC PACS Volume = 27.9 MB Average pps = 186 Kbps Summary The Test 2 results show that the volume of traffic has dropped down to 27.9 M due to the WAEs performing compression and TCP flow optimization (see Figure 9 ). This results in a WAN utilization savings of 36.5% when WAAS is turned ON. Interestingly, the branch PC is able to perform more work during Test 2, as the average pps has now increased to 391 Kbps from Test 1. Figure 9 Test 2: With WAAS, No Object Caching 223845 WAN Branch WAE Branch Router VLAN 300 VLAN 301 Send 43.9 MG WAAS ON Volume = 43,985,176 Avg pps = 391 kbps Volume = 27,913,156 Avg pps = 186 kbps Volume = 27,913,156 Avg pps = 186 kbps WAAS ON K-PACS DICOM Data Center WAN Edge Router 1 Data Center WAE K-PACS DICOM 3 2
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15 DICOM Traffic Performance and WAAS Application Deployment Guide OL-16162-01 Testing Results Figure 10 shows the total volume measured at location #2 (WAN) with WAAS turned ON. Volume was measured at 27.9 MB in the “To Bytes” column. This reflected a WAN volume savings of 36.5%. Figure 10 NetQoS Results for Test 2 Test 3: WAAS ON, Object Caching On Test 3 was performed with Cisco WAAS and object caching ON for both the branch and data center WAEs. This test was first run to allow the DC WAE to cache the image files. The test was performed again, and volume and throughput were recorded. Test Results Data transferred from branch modality to DC PACS server = 43,985,176 Location #1: Branch modality to branch WAE Volume = 43.9MB Average pps = 586 Kbps Location #2: Branch WAE to DC WAE (WAN) Volume = 1.79 MB Average pps = 23.9 Kbps Location #3: DC WAE to DC PACS Volume = 1.79 MB Average pps = 23.9 Kbps
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16 DICOM Traffic Performance and WAAS Application Deployment Guide OL-16162-01 Testing Results Summary The Test 3 results show that the volume of traffic across the WAAS has dropped considerably, down to 1.79 M due to the WAEs performing object caching, plus due to compression and flow optimization (see Figure 11 ). This results in a bandwidth savings of 95.9%. Note that the branch PC is now able to perform even more work than in the case of Test 2, as the average pps has now increased even further to 586 kbps.
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