Video Performance Analysis in the

1
Video Performance Analysis in the UCSB MeshNet
Testbed Henrik Lundgren, Irfan Sheriff, Prashanth
Aravinda Kumar, Anderson Lam, Joshua
Miller, Kimaya Sanzgiri and Elizabeth
Belding-Royer University of California, Santa
Barbara
UCSB MeshNet
video server
video client

• Video client and server
• Video client/server machines establish PPP
  connection to the VPN servers
• VLC server streams video packets through the VPN
  tunnel into the MeshNet testbed

• VPN Tunnels
• Connect video server and client to testbed
• Remote nodes appear as local nodes attached to
  mesh network
• Forces the data path through the mesh network

Traffic Exits
Traffic Entry
MR6
MR5
MR4
MR3
MR2
MR1
1 Hop Egress
2 Hop Egress
3 Hop Egress
4 Hop Egress
5 Hop Egress
Ingress
UCSB MeshNet Test Scenario

• Plotting Agent
• Pulls video packet data from Monitoring Agents
  periodically
• Computes metrics and generates graphs

• Monitoring Agents
• Run at Ingress and Egress nodes
• Use tcpdump to collect video packet data
• Serve data to Plotting Agent

• Configuration and Control Scripts
• On-the-fly route configuration
• Control of video play-out, monitoring agents and
  traffic load

Testing 1 minute video clip, encoded at 128
kbps
Delay (Log Scale)
Throughput
Packet Loss
Test 1 Background traffic at 10 pkt/sec, 256
byte packets
Test 2 Background traffic at 150 pkt/sec, 256
byte packets
This work was sponsored in part by NSF Network
Research Testbeds grant CNS-0335302 as part of
the WHYNET project.