帶寬利用率提升 50%，騰訊雲聯網架構方案解析

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 是一家互聯網公司，當前在雲上計算資源已經接近 10W 核，華東地域專線流量 24G+，資源部署以華東爲主、華北、華南、西南等可用區爲輔。該企業屬於典型的混合雲架構，本文主要分享企業A如何通過雲聯網架構優化實現帶寬利用率提升 50%，希望與大家一同交流。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"一、雲聯網背景介紹"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"1. 對等連接概述"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"對等連接（Peering Connection）是一種大帶寬、高質量的雲上資源互通服務，可以幫助打通騰訊雲上的資源通信鏈路。對等連接具有多區域、多賬戶、多種網絡異構互通等特點，支持 VPC 間互通、VPC 和黑石私有網絡互通，滿足不同業務的部署需求。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/f4\/96\/f4b08962eafd6cdc088da2bf19b5d696.png","alt":null,"title":"","style":[{"key":"width","value":"100%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"2. 傳統專線概述"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"混合雲架構前期都是使用傳統的專用通道打通用戶 IDC 與雲上 VPC。如果一根物理專線需要打通多個 VPC，需要通過不同的 VLAN ID 分別創建專用通道來連接多個 VPC。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/27\/a3\/27111b31938338ae150467d7b7b1b8a3.png","alt":null,"title":"","style":[{"key":"width","value":"100%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"3. 雲聯網概述"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"雲聯網（Cloud Connect Network，CCN）爲用戶提供雲上不同 VPC 間、VPC 與本地數據中心間（IDC）內網互聯的服務。具備全網多點互聯、路由自學習、鏈路選優及故障快速收斂等能力。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"雲聯網覆蓋全球 20+ 地域，支持 100+Gbps 帶寬以及最高可達 99.99% 的可用性，爲用戶輕鬆構建極速、穩定、安全、靈活的全球互聯網絡，典型應用場景如下："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"VPC 與 VPC 間高質量內網互聯：在線教育多個地域的實時音視頻系統、遊戲加速多地域內網互聯、多地域容災架構。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"VPC 與 IDC 間內網全互聯：一個專用通道打通多個 VPC，實現單次接入全網互聯，如混合雲場景。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/b5\/a7\/b54c68410f23c1c72a5d67e59bb931a7.png","alt":null,"title":"","style":[{"key":"width","value":"100%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"雲聯網對比對等連接和傳統專線的優勢如下圖所示："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/dc\/42\/dc201acd55d7274a58b0b34ffc10a042.png","alt":null,"title":"","style":[{"key":"width","value":"100%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"下文將從企業 A 的實際出發，介紹企業 A 採用騰訊雲聯網的架構優化實踐。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"二、企業 A 架構現狀介紹"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"1. 企業 A 混合雲背景介紹"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 核心業務位於華東地區，在上海有兩個 VPC，一個自建 IDC。在北京、成都、廣州、HK 各有一個 VPC，其中 HK 的 VPC 用於接入海外業務。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"最終通過對等連接以及傳統專線通道實現所有云上 VPC 與自建 IDC 的互聯互通（由於傳統架構互聯線路較多暫不提供具體拓撲，下文提供了分解拓撲）。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"2. 公有云 VPC 通過對等連接互聯架構"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/4d\/ba\/4dd391a2b10bfec5a76979056536daba.png","alt":null,"title":"","style":[{"key":"width","value":"100%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 上海地域當前是兩個 VPC，一個是業務 VPC，另外一個是用於測試的 VPC，同地域兩個 VPC 之間理論上不限制帶寬，除非底層數據中心的 DCI 互聯帶寬（DCI 互聯帶寬都是上 T 級別）被打滿纔會導致同地域對等連接丟包；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 的少量海外業務通過香港 2 區的 VPC 做接入，再通過 100Mbps 的對等連接實現打通上海 5 區的核心業務 VPC；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 分佈在華東、華北、華南、西南的業務 VPC 通過對等連接全互連實現業務互訪。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"3. 公有云 VPC 與自建 IDC 通過傳統專線互聯架構"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/4c\/bf\/4c6c1648398fc244ac854a30dc5200bf.png","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/c9\/32\/c99fb4c4caa8bce4dd51ff1e47650e32.png","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"名詞解釋：NGW（底層專線網關集羣）、QCAR（網絡設備）、QCPL（網絡設備）IDC（數據中心）。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 公有云 VPC 到自建 IDC 每天峯值總流量 24Gbps，正常四條 10G 專線均分流量爲：24Gbps * 25% = 6Gbps；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當前企業 A 的傳統專線架構是專線 1 與 2、專線 3 與 4 相互備份，當專線 1 故障，那麼專線 1 的流量會轉發到專線 2，所以每條專線的帶寬使用率不建議超過 50%；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"由於企業 A 業務快速增長，當前每條專線的帶寬使用率已經達到 60%。如果上圖 2 的專線 1 故障，就會有 12Gbps 的流量轉發到專線 2，最終導致專線 2 帶寬擁塞而丟包影響業務。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"4. 當前互聯架構的挑戰"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"公有云 VPC 之間互通要建立全互連的對等連接，並且每次增加 VPC 都有增加大量對等連接和路由，最終導致維護成本越來越高；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"跨地域對等連接的底層網關集羣故障無法自動切換路由恢復，止損耗時久；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 自建 IDC 到騰訊雲的四條專線，如何實現中斷任何一條，另外三條專線可用均分故障鏈路的流量，最終通過最低的成本解決丟包問題；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 有四個公有云 VPC 需要和自建 IDC 互通，那麼需要四個專線網關，以及 16 個 BGP 鄰居和專線通道。後續每增加一個 VPC 就會增加四個專線通道，最終導致專線的運維成本增加。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"三、雲聯網改造方案介紹"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"1. 公有云 VPC 通過雲聯網互聯架構設計"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/31\/63\/31485fe5393f7cbb5643a176ca546b63.png","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 所有 VPC 只需要加入新建雲聯網實例，即可實現相互路由自動學習，無需維護大量對等連接和大量手工添加的路由；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"所有存量 VPC 以及後續增量 VPC 互通的流量都需要通過雲聯網實現，可以將該雲聯網實例看作企業 A 的虛擬骨幹網；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"多 AZ（可用區）網關集羣容災，可用性比對等連接更高；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"跨地域雲聯網網關之間會有撥測，最終選擇最優路徑來降低延遲，提升業務穩定性。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"2. 公有云 VPC 與自建 IDC 通過雲聯網互聯架構設計"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/53\/59\/53dc0caeb47cd238152a0aa9618f4f59.png","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/5e\/bc\/5eb9652a69e2dbf6275fbe8147bb3ebc.png","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"名詞解釋：CCNGW（雲聯網類型專線網關）、QCAR（網絡設備）、QCPL（網絡設備）IDC（數據中心）。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 所有 VPC 以及四個專線網關都加入同一個雲聯網實例最終實現相互訪問，並且無論幾個 VPC 和自建 IDC 互通只需要 4 個專線通道即可（簡化配置複雜度，簡單可靠）；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"雲上 VPC 路由下一跳是雲聯網，然後通過 ECMP（負載均衡）四份流量到 4 個雲聯網專線網關，最終通道底層路由將流量通過四條物理專線轉發到自建 IDC（邏輯轉發路徑：VPC---CCN---專線網關---專線---IDC）；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"假設企業 A 的物理專線 1 再次中斷，那麼 QCPL1 無法收到自建 IDC 的 BGP 路由。最終通過路由收斂使得雲聯網將流量轉發給雲聯網專線網關 2-4，從而實現任意一條物理專線故障都會將流量均分給其他三條專線；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在成本不增加的情況下，通過雲聯網的改造將專線帶寬利用率從理論值 50% 提升到 75% 實現降本增效。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"四、雲聯網改造總結"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"1. 雲聯網改造帶來的實際收益"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 所有云上 VPC 不必兩兩之間創建對等連接，只需要加入雲聯網即可實現全部的互聯互通，降低了雲上 VPC 的運維成本；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 跨地域 VPC 互通的網關集羣實現多 AZ 容災，提升跨地域互通的可用性；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 的四條專線峯值總流量 24Gbps 情況下中斷任意一條都會通過路由收斂自動恢復業務，不必依賴於被動等待專線修復或者降級其他業務來恢復，最終提升專線的高可用性；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"企業 A 雲上 VPC 與 IDC 互通只需要創建 4 個 BGP 鄰居即可，也不必爲每個雲上 VPC 創建專線網關，最終極大降低專線的運維成本。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"2. 雲聯網改造注意事項"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"線上業務改造需要很謹慎，建議前期做好深度調研，比如相關業務特徵，帶寬容量評估，當前架構的梳理，當前架構的缺點，新架構是否解決老架構缺點，各個地域的改造難度，是否可以平穩切換到新架構等。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"雙方一起確認新架構灰度基本步驟，基本原則是：先灰度測試 VPC，然後按 VPC 業務量從小到大的順序進行灰度。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"未使用過雲聯網的用戶建議先創建測試 VPC 熟悉雲聯網配置方法，具體可參考文末提供的相關文檔。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"真正灰度前拉通騰訊雲網絡專家評估新老架構的底層網關路徑差異，網關集羣的帶寬容量，底層路徑MTU差異，雲聯網限速算法（截止 2020 年 11 月依然存在均分算法和分佈式算法兩種，出於帶寬利用率最大化考慮建議分佈式算法）等。每次灰度遷移都需要有明確的變更步驟、驗證步驟、回退步驟，最終來確保灰度順利完成。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"每個賬號雲聯網數量限制 5 個，每個雲聯網可以綁定的網絡實例（例如 VPC 就是一個網絡實例）數量限制 25 個。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"雲聯網跨地域帶寬限速方式有兩種，一種是地域出口限速（單地域雲聯網總的出口限速），另外一種是地域間限速（地域 A 到地域 B 之間的帶寬限速）。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"參考文檔"},{"type":"text","text":"："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"[1] 測試 VPC 配置文檔："},{"type":"link","attrs":{"href":"https:\/\/cloud.tencent.com\/document\/product\/877\/18752","title":"","type":null},"content":[{"type":"text","text":"https:\/\/cloud.tencent.com\/document\/product\/877\/18752"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"[2] 對等連接遷移雲聯網配置文檔："},{"type":"link","attrs":{"href":"https:\/\/cloud.tencent.com\/document\/product\/877\/18854","title":"","type":null},"content":[{"type":"text","text":"https:\/\/cloud.tencent.com\/document\/product\/877\/18854"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"[3] 傳統專線網關遷移雲聯網專線網關配置文檔："},{"type":"link","attrs":{"href":"https:\/\/cloud.tencent.com\/document\/product\/877\/31037","title":"","type":null},"content":[{"type":"text","text":"https:\/\/cloud.tencent.com\/document\/product\/877\/31037"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"horizontalrule"},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"頭圖"},{"type":"text","text":"：Unsplash"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"作者"},{"type":"text","text":"：李彬文 - 騰訊雲售後架構師"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"原文"},{"type":"text","text":"："},{"type":"link","attrs":{"href":"https:\/\/mp.weixin.qq.com\/s\/w76EdsqG7yqarEuLeszyCg","title":"","type":null},"content":[{"type":"text","text":"帶寬利用率提升50%，騰訊雲聯網架構方案解析"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"來源"},{"type":"text","text":"：雲加社區  - 微信公衆號 [ID：QcloudCommunity]"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"轉載"},{"type":"text","text":"：著作權歸作者所有。商業轉載請聯繫作者獲得授權，非商業轉載請註明出處。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}}]}