Building a Converged Network

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Building a Converged Network

• Michael Flaum
• Senior Solutions Manager
• www.extremenetworks.com

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Building a Converged Network

• Research
• Design
• Products and configuration
• Test a proof of concept network
• Controlled deployment
• Revisit design and deployment before large scale
  roll-out
• Roll-out design

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ExtremeAvaya White Paper
Deploying VoIP in the Enterprise
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Extreme and Avaya Interoperability Reports
10 Gigabit Ethernet
Wireless
Gigabit
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Tested and Verified
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Competitive Test Reports
In addition, tests show that an Extreme network
is a fine host for VoIP traffic that supports the
Cisco Systems AVVID voice solution. Tests prove
that the Extreme switches deliver consistent and
repeatable toll quality and voice quality on par
with or better than delivered by an equivalent
Cisco network.
http//www.extremenetworks.com/common/asp/frameHan
dler.asp?go/libraries/prodpdfs/products/TollyExtr
emeAvvidWP-Screen.pdf
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Competitive Test Reports

• Maintains excellent toll-quality voice even under
  adverse congestion conditions
• Permits high-priority traffic to pass onto
  network core uninterrupted
• Provides consistently lower latency than Cisco
  AVVID solution
• Achieves consistently lower jitter than the Cisco
  network gear even under minimal congestion

http//www.extremenetworks.com/common/asp/frameHan
dler.asp?go/libraries/prodpdfs/products/TollyTSEx
treme202158BlackDiamondDec02-screen.pdf
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Competitve Test Report

• Cisco performance degraded as the load on the the
  switch increased. Extreme maintained toll quality
• PSQM Perceptual Speech Quality Measurement,
  Jitter, Latency

http//www.extremenetworks.com/common/asp/frameHan
dler.asp?go/libraries/prodpdfs/products/TollyTSEx
treme202158BlackDiamondDec02-screen.pdf
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Real World Example
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VoIP Deployment Overview

• By using a networking monitoring tool or the
  switchs built-in functions you can determine the
  performance of the network and if it is
  configured correctly
• Review Topology View port utilization/over time
  (management tool)
• View packet size of traffic flows/per port
• View queue statistics/per port
• Map of network

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Real Physical Network Topology
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Cabling ConventionPhysical Topology
BlackDiamond 10K
1 Gigabit Multi-Mode Fiber
1 Gigabit Multi-Mode Fiber
Alpine
10 Gigabit Single-Mode Fiber
Summit 400
Summit 300
Ports1-8
Ports 9-16
10/100/1000 CAT 5 Copper
10/100 PoE CAT 5 Copper
10/100 PoE CAT 5 Copper
10/100/1000 CAT 5 Copper

• Notes
• Alpine interfaces
• PoE, 10/100 and 10/100/100
• Summit 400 interfaces
• 10/100/1000
• Summit 300 interfaces
• 10/100 PoE

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Real Utilization Reports
VoIP Calls
Video Streams
IP Phone on Port 6
PC on Port 20
Utilization granularity may not be acceptable
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Real Example of Monitoring VoIP
Packet size monitoring
VoIP
PC
0 - 64B is typically VoIP 0 - 511B is typically
LAN data
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Real Example of Monitoring VoIP QoS
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Key Points for a Converged Network

• How do you determine the likely effect of new
  voice traffic on your existing data flows?
• Other IP flows will most likely affect VoIP
  traffic
• A QoS scheme is critical to segmenting the
  network
• Does VoIP require greater intelligence at the
  edge?
• YES, since jitter affects voice, prioritization
  of traffic end-to-end is a requirement
• Physical design is just as important as logical
  design
• Wiring convention
• Switch deployment convention
• PC and Phone Conventionfor PoE, 10/100/100

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VoIP ManagerLogical Topology

• Consistent QoS features implementation on all
  Extreme switches
• Unified management platform for configuration,
  and end-to-end service provisioning
• Layer 3-4 packet inspection intelligence even
  when switching at Layer 2 only
• Network-wide VLANs over LAN/MAN/ WAN
• Extensive hardware redundancy
• EPICenter VoIP Manager
• Calculates end-to-end bandwidth requirements
  based on G.7xx algorithm, and location of IP
  phones
• Creates and configures VoIP VLANs and QoS
  profiles
• Applies your VoIP QoS policies to all switches

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VoIP ManagerLogical Topology
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Key Points

• What might it cost to upgrade you data Network to
  handle voice?
• This depends on the
• Switchescapabilities
• Topology of network/protocols/interfaces
• Network management
• Personnel
• Applications
• VoIP equipment

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Conclusion

• Must have network based end to end QoS
• Must have written architecture of physical
  topology
• Must have written architecture of logical
  topology
• Must have proven interoperability of VoIP vendor
  and switch vendor
• Must have PoE interoperability
• Must have proven resiliency
• Business goals
• Total Cost of Ownership
• Migration path Single Vendor vs. Best of Breed
• Maintenance/upgrades

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Thank You