Investigating OpenFlow negotiations. Lecture 6

Сентябрь 5, 2022

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Investigating OpenFlow negotiations. Lecture 6

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50. Result: The controller is copying ARP messages so that it can discover hosts on the network.
72. 31. Program a new flow entry in Table 0 of the ProVision switch 1 (P1) that
75. Will this rule work? Add a flow entry with the following attributes and then click Add
76. The same error code displays: • Type: OFPET_BAD_MATCH = 4 • Code: OFPBMC_BAD_TYPE = 0
80. The switch still uses three tables by default: Tables: 0 (Read-only), Table 100 (TCAM) and Table
83. The OpenFlow tables can be configured dynamically by SDN Applications.
88. Tables in pipeline: • Table 0: Read-only • Table 100 (TCAM) • Table 200 (Software)
94. ProVision number of buffers
95. Comware number of buffers
98. Will this rule work? Add a flow entry with the following attributes and then click Add,
100. • Table ID: 0 • Priority: 100 • Src Mac: bbbbccccdddd • Instructions: Apply Actions •
106. Result: This is an OFPFC_ADD message. The controller is adding a new flow to the switch.
107. Result: This is also an OFPFC_ADD message
116. In the Wireshark capture, the switch is informing the controller of the flow removal (OFPT_FLOW_REMOVED) and
123. In Flow Maker, add a flow entry with the following attributes to the Provision Switch (10.1.1.253)
125. Add a flow entry to the ProVision switch (10.1.1.253) with the following attributes and then click
133. Скачать презентацию

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Result: The controller is copying ARP messages so that it can

discover hosts on the network.

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31. Program a new flow entry in Table 0 of the

ProVision switch 1 (P1) that drops all ingress traffic on
port 2.
Will this rule work?
Add a flow entry with the following attributes and then click Add (see Figure).
• Table ID:0
• Priority: 100
• In Port: 2
• Instructions: Apply Action
• Action 1: No Action
• Save Flow = True

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Will this rule work?
Add a flow entry with the following attributes

and then click Add (see Figure).
• Table ID: 100
• Priority: 100
• Src Mac: aaaabbbbcccc
• Instructions: Apply Action
• Action 1: No Action
• Save Flow = True

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The same error code displays:
• Type: OFPET_BAD_MATCH = 4
• Code: OFPBMC_BAD_TYPE

= 0

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The switch still uses three tables by default: Tables: 0 (Read-only),

Table 100 (TCAM) and Table 200 (Software).

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The OpenFlow tables can be configured dynamically by SDN Applications.

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Tables in pipeline:
• Table 0: Read-only
• Table 100 (TCAM)
• Table 200

(Software)

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ProVision number of buffers

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Comware number of buffers

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Will this rule work?
Add a flow entry with the following attributes

and then click Add, as illustrated in Figure.
• Table ID: 200
• Priority: 100
• Src Mac: aaaabbbbcccc
• Instructions: Apply Actions
• Action 1: No Action
• Save Flow = True

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• Table ID: 0
• Priority: 100
• Src Mac: bbbbccccdddd
• Instructions: Apply

Actions
• Action 1: No Action
• Save Flow = True

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Result: This is an OFPFC_ADD message. The controller is adding a

new flow to the switch.

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Result: This is also an OFPFC_ADD message

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In the Wireshark capture, the switch is informing the controller of

the flow removal
(OFPT_FLOW_REMOVED) and the reason for the removal (OFPRR_DELETE (2)).

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In Flow Maker, add a flow entry with the following attributes

to the Provision Switch (10.1.1.253)
and then click Add (see Figure):
• Table ID: 100
• Priority: 100
• In Port: 2
• Instructions: Goto Table
• Table: 150
• Save Flow: True

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