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

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Presentation on theme: "BDL-UDL Load Balancing a.k.a Policy Routing husni tokyo, 2003/06/20."— Presentation transcript:

1 BDL-UDL Load Balancing a.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 AI 3 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 Todays Traffic


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