TUNDRA The Ultimate Netflow Data Realtime Analysis. Jeffrey Papen Yahoo! Inc. Source and Destination AS bandwidth analysis Transit AS bandwidth analysis Custom AS macros: Bandwidth forecasting, peering merit analysis Billing Formulas for cost/ benefit budget analysis.
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TUNDRAThe Ultimate Netflow Data Realtime Analysis
Source and Destination AS bandwidth analysis
Transit AS bandwidth analysis
Custom AS macros: Bandwidth forecasting, peering merit analysis
Billing Formulas for cost/ benefit budget analysis
Analyze usage for local servers or services - Charge Back Billing
Symmetric Network Performance Analysis: latency and packet loss
AS path hop count stats
DOS attack detection
All in Real Time
Prove that network performance increases
Prove that network reliability increases as AS hops decrease
Cost/Savings analysis for new peer or transit
Know how much bandwidth a peer will use before (or after) you turn link up – determine private vs. public peering need
Focus and Order peer hit list – who should you go after?
Business case to document support for peers that say No.
2 – 3 minutes
Continuously exporting flows
500Mb/sec in + out in 15 minutes generates approx
5,244,216 flows (288 MB). Processed in 21 seconds @ 248,724 flows/sec
Flow % * SNMP stored in central DB
All outbound flows have destination IP
Each Destination Subnet learns AS path from Zebra BGP table - AS padding removed
Zebra BGP table is identical to actual routes used on local router(s)
Local BGP data reflects immediate policy changes with no performance impact or security threat to production routers
Destination vs. Transit Traffic – UUNet
TUNDRA Next Steps