Lecture 237: Summary: Gateway Load Balancer
- 课程：[NEW] AWS Certified Advanced Networking Specialty 2026
- 视频时长：01:38
- 来源：Udemy Lecture 29240550
- Slide 数量：2
- 画面切换：00:42
扫描说明
逐条读取了 Transcript 面板中的 39 条英文 cue，并按播放器进度同步全长约 01:38 的视频。依据 Purpose/Layer/GENEVE 与 Transparent Scaling/Partner Ecosystem 划分为 2 个小节。2 张截图来自真实总结 Slide 的两个展开阶段，统一为 1364×770。
Transcript 来自 Udemy 页面自带的英文自动字幕，没有使用 ASR。下面保留页面原文，包括其中的语法或识别错误。
1. GWLB 在 Layer 3 管理并扩展第三方 Network Appliance Fleet
时间范围：00:00–00:42
总结 / Summary
中文
Gateway Load Balancer 用于在 AWS 中 Deploy、Scale 与 Manage 第三方 Network Appliance Fleet，典型目标包括 Firewall、IDS/IPS、Deep Packet Inspection 与 Payload Manipulation Software。它工作在 OSI Layer 3，与 Layer 7 的 ALB 和 Layer 4 的 NLB 不同。GWLB 使用 GENEVE 进行 Layer-3 Encapsulation，使 Appliance 能在标准化封装内处理保留原始流信息的 Packet。
English
Gateway Load Balancer deploys, scales, and manages fleets of third-party network appliances in AWS, including firewalls, IDS or IPS systems, deep packet inspection, and payload-manipulation software. It operates at OSI Layer 3, unlike an ALB at Layer 7 or an NLB at Layer 4. GWLB uses GENEVE for Layer-3 encapsulation so appliances can process packets with their original flow information inside a standardized wrapper.
Transcript
00:00 Okay. Let's look at the quick summary
00:02 of the Gateway Load Balancer
00:04 So the Gateway Load Balancer is used to deploy, scale
00:07 and manage the fleet of third party network appliances
00:09 in AWS.
00:11 And this network appliances could be Firewalls,
00:13 Intrusion Detection and Prevention Systems,
00:16 Deep Packet Inspection Systems,
00:18 or payload manipulation softwares.
00:21 And you very well know this, right?
00:23 And Gateway Load Balancer operates at Layer 3,
00:26 that is at Network Layer,
00:27 as opposed to the Application Load Balancer,
00:30 which operates at Layer seven of OSI model
00:32 or NLB which operates at layer four.
00:35 And you know that Gateway Load Balancer
00:37 uses the Layer 3 encapsulation protocol
00:39 that is GENEVE protocol.
2. Transparent Entry/Exit Point 提供 Load Balancing、On-demand Scale 与 Partner Integration
时间范围：00:42–01:38
总结 / Summary
中文
GWLB 是 Transparent Network Gateway，为经过它的 Traffic 提供单一 Entry/Exit Point，同时把 Flow 分发到健康 Appliance 并让 Virtual Appliance Capacity 按需扩展。这解决了传统静态 Route 指向单台 Appliance、无法透明 Load Balance 的问题。Aviatrix、Cisco、Fortinet、Palo Alto Networks、Check Point 等 Partner 提供已适配 GENEVE/GWLB 的 Virtual Appliance；实际部署仍需核对 Partner Compatibility、Licensing、Bootstrap 与 Health Check 要求。
English
GWLB is a transparent network gateway that provides a single entry and exit point for traffic while distributing flows across healthy appliances and scaling virtual-appliance capacity on demand. This removes the legacy limitation of static routes to one appliance with no transparent load balancing. Partners such as Aviatrix, Cisco, Fortinet, Palo Alto Networks, and Check Point offer virtual appliances adapted for GENEVE and GWLB; deployments should still verify compatibility, licensing, bootstrap, and health-check requirements.
Transcript
00:42 Now it's a transparent network gateway,
00:43 which acts as a single entry and exit point
00:47 for all the traffic.
00:48 It also load balances
00:49 the traffic and scales virtual appliances on demand
00:52 which wasn't possible earlier because there was no provision
00:56 to load balance the traffic across network appliances,
01:00 but then Gateway Load Balancers solve that problem
01:03 And Gateway Load Balancer integrates
01:05 with industry leading partners, like Aviatrix,
01:08 Cisco Systems, Fortinet, Palo Alto Networks, Checkpoints.
01:11 And you can check the list of all the partners
01:13 here in this URL.
01:17 Which also means that these partners have modified
01:20 their virtual appliances to integrate
01:23 with Gateway Load Balancer
01:24 so that they support the GENEVE protocol as well.
01:28 So that's about the Gateway Load Balancer in short
01:31 and next let's look at some important points
01:34 you need to remember for your exam.
01:36 So thanks for watching.
整讲总结 / Overall Summary
中文
Gateway Load Balancer 是 Layer-3 Transparent Appliance Insertion Service：它以 GENEVE 承载原始 Flow，给第三方 Firewall、IDS/IPS、DPI 等设备提供 Health-aware Load Balancing 与 On-demand Scale，并通过 Partner Ecosystem 交付兼容 Appliance。
English
Gateway Load Balancer is a Layer-3 transparent appliance-insertion service. It carries original flows with GENEVE, provides health-aware load balancing and on-demand scale for third-party firewalls, IDS or IPS, and DPI systems, and relies on a partner ecosystem for compatible appliances.
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