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BDL-UDL Load Balancing a.k.a Policy Routing

BDL-UDL Load Balancing a.k.a Policy Routing. husni tokyo, 2003/06/20. What is Policy Routing?. Small userland program running on FreeBSD to load balance the traffic in AI 3 network redirect some traffic from BDL to UDL no action is required at downstream. What Does It Do?.

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BDL-UDL Load Balancing a.k.a Policy Routing

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  1. BDL-UDL Load Balancinga.k.a Policy Routing husni tokyo, 2003/06/20

  2. What is Policy Routing? • Small userland program running on FreeBSD to load balance the traffic in AI3 network • redirect some traffic from BDL to UDL • no action is required at downstream

  3. What Does It Do?

  4. Prefix advertisement flow

  5. Traffic flow before p-route

  6. Traffic flow after p-route

  7. O/S Requirements • FreeBSD 4.5-RELEASE ~ • Kernel options • IPFIREWALL • IPDIVERT • IPFIREWALL_FORWARD • IPFIREWALL_DEFAULT_TO_ACCEPT • Tunnel interface • gif0

  8. P-route System

  9. Process Flow

  10. Policy Manager • Current: static • Next: adaptive • traffic pattern • UDL usage policy (multicast is preferred)

  11. Operation Status • ITB • E-mail; HTTP; Squid • AIT • still not running • UDL is unstable?

  12. Before and After P-Route

  13. Today’s Traffic

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