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The basic idea is simple: we exploit the fact that most
modern Ethernet switches and routers contain flow-
tables (typically built from TCAMs) that run at line-
rate to im-plement firewalls, NAT, QoS, and to collect
statistics.

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16. (2) OpenFlow
LLDP
(Packet Out)
OpenFlow 1 OpenFlow 2 OpenFlow
LLDP
Port 1
Port 11 Port 22
OpenFlow
(1) OpenFlow
OpenFlow
LLDP OpenFlow

17. OpenFlow 1 OpenFlow 2 OpenFlow
Port 1
Port 11 Port 22
OpenFlow
OpenFlow OpenFlow OpenFlow
Packet-In
OpenFlow #1
Port 11
OpenFlow OpenFlow #1
Port 22 LLDP OpenFlow #2
Port 11
OpenFlow #2
Port 22

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