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简化你的IP网络与集中段路由,Ciena的部分自适应IP

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  • 更新:03年6月,2019年,还剩11分08秒的坚持
简化你的IP网络与集中段路由,Ciena的部分自适应IP
段路由再次启用IP最高的服务提供商网络简化。了解Ciena的自适应IP利用段路由网络发展使它具有更强的可伸缩性,效率,简化,和成本效益。

与新技术的实现5 g,互联网的东西(物联网),人工智能(AI),需要增加计算能力在网络边缘正在增长。这种增长将增加压力和协议的IP连接互联网“粘”在一起。

“简洁是终极复杂”,列奥纳多·达·芬奇
支持必要的规模IP节点需要一个新的和创新的网络体系结构。IP网络必须发展自己和操作变得更简单,而利用自动化和智能通过采用软件定义网络(SDN)功能。

传统方法不允许IP网络成本效益的规模

首先,让我们后退一步,理解为什么当前的方法行不通。作为一个例子,在传统的基于ip的网络,数据包转发决策与独立的路由器在敌手的基础上在每个节点执行路线查询。基于ip的网络使用内部网关协议(显卡),为了让数据包转发决策成本根据预先指定的路径。数据包具有类似起源和/或目的地将遵循同样的路线,导致交通拥堵,即使没有得到充分利用,甚至闲置可选路径。

试图解决这一问题,介绍了交通工程(TE)而不是转发决策基于敌手,入口路由器确定特定流量source-to-destination路径。之前就会采取这种方式,交通成本更低而拥挤的道路现在可以直接通过充分利用路径。换句话说,执行交通“负载均衡”。

资源预约协议(RSVP)也引入储备资源以及交通流的IP网络的端到端路径。RSVP信令协议扩展了多协议标签交换(MPLS)功能支持MPLS-TE,使回复建立标签交换路径(LSP)与RSVP-TE MPLS-TE网络扩展。

当前的网络运营商的首选技术设计和部署流量工程是通过使用RSVP-TE MPLS网络。

这个问题?标签分配协议(LDP),特别是RSVP-TE,是复杂的协议实现、维护、操作和解决当事情出错。他们创造了很多信号网络中的流量,对拓扑结构的理解有限,洪水和MPLS隧道网络。

网络运营商因此需要高度熟练的操作人员来支持一个RSVP-TE网络架构和缩放RSVP-TE网络可以迅速成为一项艰巨的任务!

简化你的网络段路由

段路由(SR)是一个强大的移动IP网络简化的方向。它不是一项新技术,如供应商和服务供应商都在谈论了近十年。然而,最初的讨论不包括SDN从而大大限制了其可实现的好处。

SR是一个灵活的和可扩展的方式实现IP路由。源选择路径,直接嵌入到数据包报头有序列表的链接。SR路径不是敌手依赖信号,标签分配协议(LDP),或回复;相反,它使用“段”转发。总的来说,一个更简单的拥有和运营网络。

段路由也可以操作MPLS或IPv6数据平面,它集成了MPLS的丰富的多种功能,包括第三层VPN (L3VPN)和以太网VPN (EVPN)。

Ciena适应IP TM 实现部分路由

Ciena适应IP呈现完美的架构发展网络转换成一个可扩展的、高效、简化,和具有成本效益的架构利用段路由。自适应IP设计拥抱SDN和受益于基于网络的分布式智能之间的平衡和集中控制器的情报来。

不断变化的IP网络老更简单和更高效的状态并不是要提供一个SR-enabled网络基础设施或使老遗产IP基础设施。它要求一个明确的和广泛的证明策略在实现一个智能自动化平台。它需要Ciena适应IP的功能:

  • 开放分类可编程基础设施能够提供实时遥测、像gRPC使用开放标准,OpenConfig, BGP-LS。Ciena平台,如5162、5170、6500 - t和6500分是很好的解决方案,统一的例子可伸缩性、性能、容量、和一个精简的IP堆栈的优化形式。
  • 分析与理解多层和多供应商网络的能力,执行网络取证、拓扑发现、实时网络资源利用率、QoS要求,和作为一个老路径计算元素(PCE)。蓝色星球路线优化和保证(ROA)是完美的工具集来支持任何SR实现。
  • 多供应商和多域SDN编排自动化能力和程序PCE计算后的网络基础设施,使用标准NETCONF /杨来实现段路由策略。蓝色星球多域服务协调器(MDSO)带来了SDN老功能需要一个有效的部署。
简化你的IP网络与集中段路由,Ciena的部分自适应IP

你应该知道什么时候发展段路由?

当比较老传统IP路由、自民党和RSVP-TE实现,好处非常明显。段路由有很强的潜力成为主要的IP网络体系结构支持用例如即将到来的5 g移动网络部署。

有些重要的事情要记住当讨论任何SR采用:

  • IP网络的进化并不是一个新建的场景。大多数现有的平台已经部署的不兼容老任何实现需要支持一个多元技术环境。
  • 网络发展成为自适应的唯一途径,具有成本效益,futureproof采用开放的思想和相关市场的解决方案。所有构件在一个老的实现必须支持多厂商环境。
  • 最后,老不是box-centric实现。效率显著依赖于拥有一个智能自动化软件平台相结合最先进的行业惯例和有一个明确的进化策略。

段的路由技术,实现自适应IP
段的路由技术,实现自适应IP


网络运营商运行IP / MPLS网络需要的能力发展现有的网络基础设施,以支持新的服务和IP网络的发展,在不增加复杂性和负面影响总拥有成本(TCO)。Ciena适应IP是完美的框架,一个成功的SR实现。

要了解更多,请下载了解段路由Ciena的自适应IP架构

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\"Simplify<\/figure> Segment Routing is once again top of mind for service providers to enable IP network<\/a> simplification. Understand how Ciena<\/a>\u2019s Adaptive IP leverages Segment Routing to evolve the network to make it more scalable, efficient, simplified, and cost-effective.

With the implementation of new technologies like 5G, the Internet of the Things (IoT<\/a>), and Artificial Intelligence (AI), the need for increased computing capacity at the network edge is growing. This growth is putting increased strain on the IP connectivity and protocols that \u201cglue\u201d the Internet together.

\u201cSimplicity is the ultimate sophistication\u201d \u2013 Leonardo da Vinci
Supporting the necessary scale of IP nodes will require a new and innovative network architecture. IP networks must evolve to become much simpler to own and operate while leveraging automation and intelligence enabled through the adoption of Software-Defined Networking (SDN) capabilities.

<\/div><\/div>Legacy approach won\u2019t allow IP networks to cost-effectively scale<\/b>

First, let\u2019s take a step back and understand why the current approach won\u2019t work. As an example, in a traditional IP-based network, packet forwarding decisions are made on a hop-by-hop basis with standalone routers performing route look-ups at every node. IP-based networks use Interior Gateway Protocols (IGP), designed to make packet forwarding decisions based on a preassigned path cost. Packets with similar origin and\/or destination will follow the same route, resulting in congestion, even if optional paths are underutilized or even idle.

Trying to address this problem, Traffic Engineering (TE) was introduced and rather than forwarding decisions being made on a hop-by-hop basis, ingress routers determine the source-to-destination path for specific traffic flows. This way, traffic that would\u2019ve previously taken a lower-cost yet congested path can now be directed via underutilized paths. In other words, perform traffic \u201cload balancing\u201d.

Resource Reservation Protocol (RSVP) was also introduced to reserve resources along the end-to-end path of traffic flow in an IP network. The RSVP signaling protocol was extended with Multi-Protocol Label Switch (MPLS) features to support MPLS-TE, enabling RSVP to set up a Label Switched Path (LSP) in an MPLS-TE network with RSVP-TE extension.

<\/div><\/div>The current go-to technology for network operators to design and deploy traffic engineered MPLS networks is via the use of RSVP-TE.

The problem? Label Distribution Protocol (LDP), and specifically RSVP-TE, are complicated protocols to implement, maintain, operate, and troubleshoot when things go wrong. They create a lot of signaling traffic in the network, have a limited understanding of the topology, and flood the network with MPLS tunnels.

Network operators thus require highly skilled operations personnel to support an RSVP-TE network architecture and scaling a RSVP-TE networks can quickly become a daunting task!

Simplifying your network with Segment Routing<\/b>

Segment Routing (SR) is a strong movement in the direction of IP network simplification. It isn\u2019t a new technology, as vendors and service providers alike have been talking about it for close to a decade. However, initial discussions didn\u2019t include SDN thereby significantly limiting its achievable benefits.

SR is a flexible and scalable way of implementing IP routing. The source chooses a path and embeds it directly into the packet header as an ordered list of links. An SR path isn\u2019t dependent on hop-by-hop signaling, Label Distribution Protocol (LDP), or RSVP; rather, it uses \u201csegments\u201d for forwarding. Overall, a much simpler network to own and operate.

Segment Routing can also operate with an MPLS or an IPv6 data plane, and it integrates with the rich multi-service capabilities of MPLS, including Layer 3 VPN (L3VPN) and Ethernet VPN (EVPN).

Ciena Adaptive IP<\/b>TM<\/sup><\/b> Implementation of Segment Routing<\/b>

Ciena Adaptive IP presents the perfect architecture to evolve the network into a scalable, efficient, simplified, and cost-effective architecture leveraging Segment Routing. Adaptive IP is designed to embrace SDN and benefits from balancing between network-based distributed intelligence and centralized controller-based intelligence.

Evolving IP networks to a simpler and more efficient state with SR is not about having an SR-enabled network infrastructure or enabling SR in a legacy IP infrastructure. It demands a clear and widely proven strategy around implementing an intelligent automation platform. It requires the capabilities of Ciena Adaptive IP with:

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