comparison with NFT marketplace(Opensea,Adam,My customized one).pdfwei-li
?
For docs, you can refer to below.(Japanese only)
https://recruit.gmo.jp/engineer/jisedai/blog/comparation-with-nft_marketplace-opensea-adam-customized_one/
The balance of payments is a double-entry system that records all economic transactions between a country and the rest of the world over a period of time. It includes exports and imports of both visible goods and invisible services, as well as capital inflows and outflows. The current account tracks trade in goods and services as well as income like interest and dividends, while the capital account covers investment flows and changes in foreign exchange reserves. India's balance of payments has fluctuated over time from surpluses to deficits due to factors like changes in imports, exports, capital flows, and exchange rates.
SDN Training - Open daylight installation + example with mininetSAMeh Zaghloul
?
This document provides instructions for installing OpenDaylight and Floodlight SDN controllers along with Mininet and examples of using them. It explains how to download a VM with all three pre-installed, how to start the controllers and Mininet, and walk through examples of using the Simple Forwarding application in OpenDaylight to install flows and enable hosts to ping each other. It also provides links to sample Floodlight and QoS applications.
The balance of payments is a double-entry system that records all economic transactions between a country and the rest of the world over a period of time. It includes exports and imports of both visible goods and invisible services, as well as capital inflows and outflows. The current account tracks trade in goods and services as well as income like interest and dividends, while the capital account covers investment flows and changes in foreign exchange reserves. India's balance of payments has fluctuated over time from surpluses to deficits due to factors like changes in imports, exports, capital flows, and exchange rates.
SDN Training - Open daylight installation + example with mininetSAMeh Zaghloul
?
This document provides instructions for installing OpenDaylight and Floodlight SDN controllers along with Mininet and examples of using them. It explains how to download a VM with all three pre-installed, how to start the controllers and Mininet, and walk through examples of using the Simple Forwarding application in OpenDaylight to install flows and enable hosts to ping each other. It also provides links to sample Floodlight and QoS applications.
The Path to SDN - How to Ensure a Successful SDN Evolution (Japanese)Juniper Networks
?
In his keynote presentation at Interop Tokyo 2013, Jonathan Davidson discussed the key infrastructure, automation, and orchestration details you need to consider to avoid the pitfalls that could plague your SDN deployment for years to come.
11. OpenFlowの仕組み
フィールド 意味
Ingress Port トラフィックの入力ポート番号
Ethernet source address トラフィックの送信元MACアドレス
Ethernet destination address トラフィックの宛先MACアドレス
Ethernet type Ethernetの種類
VLAN id VLAN ID
VLAN priority VLAN PCP(Priority Code Point)
IP source address 送信元IPアドレス
IP destination address 宛先IPアドレス
IP protocol トランスポート層のプロトコル種別
IP ToS bits ToS(Type of Service)(優先度)
Transport source port / ICMP Type 送信元ポート番号
Transport destination port / ICMP Code 宛先ポート番号
●
ヘッダフィールドの要素
22. FrameWorkとしての
OpenDaylight
●
各モジュールの機能1
– Base Network Service Function
●
Java Class
バンドル API 説明
arphandler IHostFinder ARPを処理してホストの場所を学習
する
hosttracker IfptoHost SDN上でホストの相対的な場所を追
跡する
switchmanager ISwitchManager コントローラ内のすべてのスイッチの
インベントリを保持する
topologymanager ITopologyManager ネットワーク全体のトポロジを保持
する
usermanager IUserManager ユーザ管理を担う
statisticsmanager IStatisticsManager IReadServiceを利用して統計情報を
収集する
Base Network Service Function:ネットワーク上のデバイス情報を取得する
ためのサービス群。
23. FrameWorkとしての
OpenDaylight
●
各モジュールの機能2
– Service Abstraction Layer(SAL)
●
Java Class
バンドル API 説明
sal IReadService スイッチのフロー/ポート/キューの
ビューを取得する
sal ITopologyService トポロジメソッド
sal IFlowProgrammerS
ervice
スイッチに対してフローエントリの
追加更新削除を行う
sal IDataPacketService パケットデコード等、パケット操作
を行う
sal IListenDataPacket パケット処理のためのクラス
このクラスを継承してコントローラ
クラスを作成する
Service Abstraction Layer:OpenFlowをはじめとするSDN対応ネットワーク
機器に対するAPI
24. FrameWorkとしての
OpenDaylight
●
各モジュールの機能3
– Service Abstraction Layer
●
Java Class
バンドル Class 説明
sal Action OpenFlowのアクション
sal Match OpenFlowのマッチ
sal IFlowProgrammerS
ervice
スイッチに対してフローエントリの追
加更新削除を行う
sal IDataPacketService パケット操作のためのサービス
OpenFlowのForwardアクションを
発行する
34. 実演
●
フロー概要3
ホスト1
MAC 00:11:11:11:11:11
ホスト2
MAC 00:22:22:22:22:22
①
②
③
⑤
byte[] dstMAC
= ((Ethernet)formattedPak).getDestinationMACAddress();
Match match = new Match();
match.setField( new MatchField(MatchType.IN_PORT,
incoming_connector) );
match.setField( new MatchField(MatchType.DL_DST,
dstMAC.clone()) );
List<Action> actions = new ArrayList<Action>();
actions.add(new Output(outgoing_connector));
Flow f = new Flow(match, actions);
f.setIdleTimeout((short)5);
Node incoming_node = incoming_connector.getNode();
Status status = programmer.addFlow(incoming_node, f);
④
マッチングルールを作成
アクションを作成
MatchとActionを使用して
入力パケットに対する処理フローを組み立て、
programmerでスイッチに書き込む
転送ルール書込