The Juniper T series is a line of
core router
A core router is a router designed to operate in the Internet backbone, or core. To fulfill this role, a router must be able to support multiple telecommunications interfaces of the highest speed in use in the core Internet and must be able to f ...
s designed and manufactured by
Juniper Networks
Juniper Networks, Inc. is an American multinational corporation headquartered in Sunnyvale, California. The company develops and markets networking products, including routers, switches, network management software, network security product ...
.
The T-series core router family comprises the T320, T640, T1600, T4000, TX Matrix, and TX Matrix Plus, designed for high-end and core networks with throughput from 320 Gbit/s to 25.6 Tbit/s with a maximum forwarding rate of 30.7 billion
pps. The JCS1200, the industry’s only independent control plane scaling system, brings virtualization to the core of the network. The TX Matrix Plus provides transport scale up to 25 Tbit/s. The T-series routers run
Junos OS
Junos OS (also known as Juniper Junos, Junos and JUNOS) is a FreeBSD-based network operating system used in Juniper Networks routing, switching and security devices.
Versioning
Junos OS was first made available on 7 July 1998, with new feature ...
.
In 2015 Juniper Networks announced the 2016
end-of-life for all T-series routers other than T4000. The other models in the series are superseded by the
PTX-series core routers and
MX-series edge routers, except for applications that require legacy protocols like
SONET
Synchronous optical networking (SONET) and synchronous digital hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from light-emitting diode ...
or
ATM.
Models and platforms
The Juniper T-series routers which consists of T320, T640, T1600, T4000, TX Matrix and TX Matrix Plus has thousands of units deployed by the major telecom and ISP networks around the world.
T320
The T320 has a total throughput of 320G bit/s (
bits per second, 160G bit/s full duplex), compared with the bigger version T640's 640G bit/s (320 Gbit/s full duplex). T320 Core Router is designed for use where rack space is at a premium and a wide range of interface speeds are needed. Each T320 router can support up to sixteen 10-Gbit/s ports (OC-192c/ STM-64 or 10-Gigabit
Ethernet
Ethernet () is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 1 ...
) while allowing lower speed connectivity down to channelized increments within the same chassis.
Befitting its edge aggregation role, the T320 also can accommodate smaller interfaces. Those include ATM (
Asynchronous Transfer Mode
Asynchronous Transfer Mode (ATM) is a telecommunications standard defined by American National Standards Institute (ANSI) and ITU-T (formerly CCITT) for digital transmission of multiple types of traffic. ATM was developed to meet the needs of ...
) and
SONet
Synchronous optical networking (SONET) and synchronous digital hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from light-emitting diode ...
(Synchronous Optical Network) interfaces at OC-3 (155M bit/s) and
OC-12 Optical Carrier transmission rates are a standardized set of specifications of transmission bandwidth for digital signals that can be carried on Synchronous Optical Networking (SONET) fiber optic networks. Transmission rates are defined by rate of t ...
(622M bit/s), as well as
Gigabit Ethernet
In computer networking, Gigabit Ethernet (GbE or 1 GigE) is the term applied to transmitting Ethernet frames at a rate of a gigabit per second. The most popular variant, 1000BASE-T, is defined by the IEEE 802.3ab standard. It came into use ...
. For those connections, carriers can reuse interfaces from the
M series and install them in the T-series blades.
T640
The T640 supports up to 8 OC-768c/STM-256 ports, 32 10-Gbit/s ports (
10-Gigabit Ethernet
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1 ...
or OC-192/STM-64), 128 OC-48c/STM-16 ports, or 320 Gigabit Ethernet ports. It delivers up to 640 Gbit/s of capacity (320G bit/s full duplex) with the ability to forward up to 770 million packets per second (Mpps).
T1600
The T1600 delivers up to 1.6 Tbit/s of capacity (800 Gbit/s full-duplex, or 8 slots at 100 Gbit/s per slot) with the ability to forward up to 1.92 billion pps. The packet forwarding and switching complex of a T1600 supports 100 Gbit/s per slot. Current interface configurations include up to 16 OC-768c/STM-256 ports or 64 10-Gbit/s ports (10-Gigabit
Ethernet
Ethernet () is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 1 ...
or OC-192/STM-64).
T4000
The T4000 delivers 4Tbit/s switching capacity (1920 Gbit/s full-duplex) over the backplane in a half-shelf router with a per-slot capacity of 240Gbit/s, up from 100Gbit/s in the existing T1600 models and 50Gbit/s in T640 models. It is possible to upgrade these two existing models to the T4000 line
Juniper press release
of 15 November 2010, visited 6 December 2010
TX Matrix
Interconnects up to four T640 chassis into a single routing entity. It has 32 slots and a sustainable throughput rate of 2.5 Tbit/s (up to 3 billion pps).
TX Matrix Plus
Juniper's TX Matrix Plus is the central switching and routing element that can interconnect up to 16 T1600 chassis into a single routing entity with 128 slots and a sustainable throughput rate of up to 25 Tbit/s (30.7 billion pps). With TX Matrix Plus, operators can build systems containing up to 16 line card chassis for a total of up to 1024 10-Gigabit Ethernet ports or 256 40 Gbit/s ports. Using the virtualization capabilities of JCS1200, this available resource can be partitioned into aggregation or edge routing, or into the support of virtual service networks for advanced partitioned services such as video, mobile, and all corporate traffic.
JCS1200
The Juniper Networks JCS1200 Control System is the industry’s first purpose-built, control plane scaling platform, providing high-power processing with a multi-CPU, multi-core server-class computing environment. With scalable memory and storage media, JCS1200 provides up to 12 routing engines in a compact one-quarter rack chassis.
Features
The T-series features include MPLS
Multiprotocol Label Switching (MPLS) is a routing technique in telecommunications networks that directs data from one node to the next based on labels rather than network addresses. Whereas network addresses identify endpoints the labels identif ...
Differentiated Services (DiffServ-TE), point-to-multipoint label-switched paths, nonstop routing and in-service software upgrades (ISSUs), hierarchical MPLS, and service delivery coupling with the Juniper Networks JCS1200 and the Partner Solution Development Platform (PSDP).
References
External links
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{{Juniper Networks
Juniper Networks
Routers (computing)