ISP is deploying VoIP services and must implement QoS monitoring tools to insure the network performance meets high standard of quality and execute lawful intercept. VoIP QoS distributed probe plan is cost prohibitive because too many probes are required. VoIP phone calls involve many sub protocols which comprise of many different servers and hosts. There is no singular place to plug probes in. SPAN ports at the core miss many local transactions. The data must be collected at various points on the network. In total, 36 probes are needed totaling 2.8 million dollars.

1. Gigamon ROI Analysis
Over $2.7M Saved by Major ISP
Data Access Networking for VoIP and Lawful Intercept
Customer GigaVUE + TAP solution
The Worlds largest ISP offering VoIP services. The TAP links directly to the network to avoid SPAN ports.
Aggregate packets from the TAPs recreate the calls and reduce
Status
the number of probes to one resulting in a significant savings
ISP is deploying VoIP services and must implement QoS
to our customer with a more robust solution.
monitoring tools to insure the network performance meets
high standard of quality and execute lawful intercept. Over $2.7M Saved in Capitol Expenditures
• Original Plan: Use lots of probes everywhere
Problem
• 36 probes at $80,000 = $2,880,000
VoIP QoS distributed probe plan is cost prohibitive because
• Plan B: Span port aggregation to reduce probes
too many probes are required. VoIP phone calls involve many
• Missed traffic flows are not acceptable
sub protocols which comprise of many different servers and
• Solution: GigaVUE + TAP solution = $171,000
hosts. There is no singular place to plug probes in. SPAN ports
• 1 Probe at $80,000
at the core miss many local transactions. The data must be
• 48 network taps $20,000
collected at various points on the network. In total, 36 probes
• 3 GigaVUE units at $71,000
are needed totaling 2.8 million dollars.
• Never miss a packet with full traffic flow monitoring
Network Diagrams
Inbound optical or
Gig- E Traffic
PROBE
TAP TAP
PROBE PROBE
GigaVUE PROBE
SBC
PROBE
GigaVUE SBC
Gig- E inbound
from GigaVUE
L2 Switch L2 Switch L2 Switch
Represents 5 100Meg
connections
TAP TAP TAP L2 Switch L2 Switch L2 Switch
PSX PROBE
ASX
PSX
EMS
GSX PROBE
ASX
MS 3 probes typical to tap 5
trunked links
ECE EMS 6 hosts X 5 connections X
GSX PROBE 2 = 60 connections / 2
SGX MS ports per probe = 30
probes
Figure 1. Data Access Network Solution ECE
PROBE
SGX
Figure 2. Probe Solution (36 Needed)
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