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OpenFlow: A Communication Protocol for Network Switches and Routers, Slides of Network Design

Université de BiskraNetwork Design

this is a slide share doc about networking and software defined networking using openflow protocols

Typology: Slides

2019/2020

Uploaded on 07/23/2020

abdelhak-boumezrag
abdelhak-boumezrag 🇩🇿

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Openflow(
Josef(Ungerman,(CCIE(#6167(
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Download OpenFlow: A Communication Protocol for Network Switches and Routers and more Slides Network Design in PDF only on Docsity!

Openflow

Josef Ungerman, CCIE

Stanford Clean Slate led to the development of…

Four parts to Openflow

Central Administra.on and Opera.ons point for Network Elements Openflow Controller

Openflow Device Agent Agent runs on the network device Agent receives instruc.ons from Controller Agent programs device tables

Openflow Protocol Openflow Protocol is… “A mechanism for the Openflow Controller to communicate with Openflow Agents…”

Important lesson for today…

Openflow does not equal SDN Openflow So\ware Defined Networking Openflow is one flavor of SDN

Openflow Protocol Versions

  • Openflow 1.

Openflow v1. Data Data Data

FLOW
TABLE
SWITCH FORWARDING
ENGINE

Fields from packet header used for lookup key ** CPU **Openflow 1.0 supports a lookup into a single flow table Lookup Key Header fields used to build lookup key

Switch

Openflow v1.

Switch

FLOW
TABLE
SWITCH FORWARDING
ENGINE
OPENFLOW CONTROLLER

If no match, Controller programs switch flow table CPU Data Data Data

Openflow v1. Flow Table in more detail… FLOW TABLE HEADER FIELDS COUNTERS ACTIONS … …

FLOW ENTRY

Flow “Entry” consists of one row in the Flow Table

Openflow v1. Flow Table in more detail… FLOW TABLE HEADER FIELDS COUNTERS ACTIONS … …

Ingress Port Source MAC Dest MAC Ether Type VLAN ID VLAN Priority IP SRC IP DEST IP Protocol IP TOS TCP/UDP SRC (ICMP Type) TCP/UDP DEST (ICMP Code)

HEADER FIELDS

This is the “Famous” Openflow 12 Tuple

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