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JuniperDebutsService

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来源: 作者: 2019-03-13 11:10:43

Juniper Networks Inc. on Monday announced the newest member of the T-series family, the T1600 core router, which doubles the capacity of its predecessor and brings service-awareness to the core. The T1600 will be available in fourth quarter and will be in beta trials in third quarter.

The T1600 supports 1.6tbps of capacity in a single chassis. It can scale to deliver up to 3.2tbps of throughput in a single standard seven-foot rack, more than twice the density of the competing platform, namely Cisco Systems Inc.’ CRS-1. It also supports 100GB per slot, which means the ability to handle Nx10Gb interfaces or 40GB SONET interfaces in a single slot.

“When we talk to customers, almost universally they are saying that they have an 80-plus percent increase in their traffic year on year,” said Chris Komatas, Juniper Network’s manager of service provider marketing for next-generation networks, noting the requirements to support high-quality multimedia services. “But it’s not just about scale. These new services have a demand of being delivered with an assured user experience and this makes the impact on the network quite different than the growth that we have seen in the past, which was just about being addressed with pure scale on the core routers. Now, we need to have control of that traffic end to end, so we can make guarantees on that user experience.”

The T1600 is policy-enabled and managed through the session resource control (SRC) capability Juniper announced in mid-March. The SRC module gathers and compiles data from multiple sources – the network, subscribers and applications – and uses this information to automatically control and manage network resources in real time. “Instead of just taking the service awareness of IMS (IP multimedia subsystem) and pushing the policy to the edge, we are using that knowledge and using it to control the core of the network,” said Komatas.

In the example of video-on-demand service delivery, the subscriber makes a request that is sent to the policy engine, which is part of the SRC portfolio. The policy manager checks the available resources at the server farm, core and edge routers. A label-switched path can then be dynamically established.

The functions of the SRC are aligned closely with emerging next-generation network architectures and specifications proposed by industry organizations, including ETSI/TISPAN, the ITU, 3GPP IMS and CableLabs.

Alan Sardella, product marketing manager for Juniper Networks, said service providers need this end-to-end capability, but they also need to implement it in a way that does not introduce too many parameters to keep track of in the core. “Abstracting this policy engine [from the network and service layers] gives them that capability because it’s being kept track of outside the network elements themselves,” Sardella said.

One application for service-awareness in the core is to centralize long-tail and unproved content and applications rather than incur the expense of pushing them to the edge. But to do that requires QoS. “The last thing you want to do is launch a new service and find that because you centralized it, you can’t deliver it with some guarantees and it’s not successful,” explained Komatas, adding that the option of centralizing content can enable a more efficient network, a simpler architecture and faster time to market.

BT Group’s CTO Matt Bross said the T1600’s capabilities will support its 21st Century Network. “As we accelerate the buildout of our 21st Century Next Generation Network and transition to an IP-based world where services are applications, we’re empowering end users with control, choice and flexibility like never before,” said Bross. “The new Juniper T1600 multiterabit core router will allow us to increase network capacity in line with escalating service demands without adding incremental systems to the network so that we can speed new service deployment, deliver a superior end-user experience and maximize our existing T-series investments to meet our cost transformation objectives.”

The T1600 uses the same components as the T640 and offers a seamless upgrade path that takes less than 90 minutes and is non-service affecting. “The challenge that service providers have is that this massive growth in scale and these requirements for taking service control mean that in many cases their installed legacy routers with a few 10 gigabit interface capability are going to need to be replaced over the next 12 to 24 months,” said Sardella. “Given this need to upgrade, what’s important is to be able to make a seamless upgrade, to be able to protect the investment they have made as much as possible in interfaces, infrastructure and operating processes. What we have is a unique system for upgrading with a kit from a T640 to a T1600 that is able to be done in service without disrupting any services.”

Like the T640 and all T, M and J series routers, the T1600 also uses the JUNOS operating system, including the recently introduced point-to-multipoint MPLS capabilities for core video distribution, improvements in optical network integration, as well as 10gigabit Ethernet optical interfaces and 40gbps interface cards.

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