Juniper M-Series
Encyclopedia
Juniper
Juniper Networks
Juniper Networks is an information technology and computer networking products multinational company, founded in 1996. It is head quartered in Sunnyvale, California, USA. The company designs and sells high-performance Internet Protocol network products and services...

 M Series
is a series of Multiservice Edge routers designed and manufactured by Juniper Networks
Juniper Networks
Juniper Networks is an information technology and computer networking products multinational company, founded in 1996. It is head quartered in Sunnyvale, California, USA. The company designs and sells high-performance Internet Protocol network products and services...

, for enterprise
Company
A company is a form of business organization. It is an association or collection of individual real persons and/or other companies, who each provide some form of capital. This group has a common purpose or focus and an aim of gaining profits. This collection, group or association of persons can be...

 and service provider
Service provider
A service provider is an entity that provides services to other entities. Usually, this refers to a business that provides subscription or web service to other businesses or individuals. Examples of these services include Internet access, Mobile phone operators, and web application hosting...

 networks. It spans over M7i, M10i, M40e, M120, and M320 platforms with 7 Gbit/s up to 320 Gbit/s of throughput. The M40 router was the first product by Juniper Networks, which was released in 1998. The M Series routers run on JUNOS
JUNOS
Juniper Junos is the software or the network operating system used in Juniper Networks hardware systems. It is an operating system that is used in Juniper's routing, switching and security devices. Juniper offers a Software Development Kit to partners and customers to allow additional customization...

 Operating System.

Models and Platforms

M Series Platform of Juniper
Juniper Networks
Juniper Networks is an information technology and computer networking products multinational company, founded in 1996. It is head quartered in Sunnyvale, California, USA. The company designs and sells high-performance Internet Protocol network products and services...

 routers includes the models like M7i, M10i, M40e, M120, and M320 routers. M40 and M20 platform routers have reached the end of sale.

M40

M40 was the first product by Juniper Networks, which was released in 1998. The M40 was the first of its kind capable of scaling to meet the internet standards ,which can move 40 million packets per second with a throughput rate in excess of 40 gigabits per second. With the initial offering of m40, Juniper came up with the Internet Processor I. The proprietary ASIC
ASIC
ASIC may refer to:* Application-specific integrated circuit, an integrated circuit developed for a particular use, as opposed to a customised general-purpose device.* ASIC programming language, a dialect of BASIC...

 was the fundamental core of Juniper's Packet Forwarding Engine (PFE). The PFE consisted of a shared memory
Shared memory
In computing, shared memory is memory that may be simultaneously accessed by multiple programs with an intent to provide communication among them or avoid redundant copies. Depending on context, programs may run on a single processor or on multiple separate processors...

, a single forwarding table, and a one-write, one-read architecture.The entire PFE was capable of forwarding at 40 Mpps, a capacity more than 100 times faster than that of any other available router architectures at that time. The M40 is one of the first routers on this scale, about 10 times faster than Cisco
Cisco
Cisco may refer to:Companies:*Cisco Systems, a computer networking company* Certis CISCO, corporatised entity of the former Commercial and Industrial Security Corporation in Singapore...

's 12000.

The M Series were also the first in the industry to offer a true decoupling of the Control Plane and the forwarding plane.

M20

M20 was the second router introduced by Juniper Networks which was released in December 1999. The M20 also uses the Internet Processor II ASIC and is capable of throughput in excess of 20Gbit/s.The M20 was the first Juniper router available with redundancy (power supply, routing engine, and system and switch board [SSB] ).

M160

The M160 router which was introduced in March 2000 as the third box in the M Series from Juniper Networks. M160 outperforms it's contemporary peers in areas of BGP table capacity, MPLS LSP capacity, route flapping recovery at OC-192
Optical Carrier
Optical Carrier transmission rates are a standardized set of specifications of transmission bandwidth for digital signals that can be carried on Synchronous Optical Networking fiber optic networks...

 speeds, convergence at both OC-192 and OC-48 speeds, and filtering at both OC-192 and OC-48 speeds. In additional tests, the M160 has matched or exceeded the competition in the areas of CoS at OC-48 and OC-192 speeds and IP and MPLS baseline testing at OC-48 and OC-192 speeds.

M5 and M10

They were introduced at the same time in September 2000, because they had similar architectures with two different throughput capabilities (5 Gbit/s on the M5 and 10Gbit/s on the M10). Both routers employs the Internet Processor II ASIC
ASIC
ASIC may refer to:* Application-specific integrated circuit, an integrated circuit developed for a particular use, as opposed to a customised general-purpose device.* ASIC programming language, a dialect of BASIC...

, providing forwarding table lookups at 40Mpps.There are two forwarding engine boards (FEBs) in the M10, allowing for a maximum of eight physical interface cards (PICs) to be used.

M40e

The M40e platform was introduced in February 2002. The M40e router has the same port density as the M40, but it provides the optional redundancy that the M40 didn't have. This model is compatible with most of the PICs from the M20, M40, and M160 models.

M7i

The M7i router is Juniper Networks most compact routing platform.The M7i is suited to the role of an IP/MPLS provider edge router
PE router
A Provider Edge router is a router between one network service provider's area and areas administered by other network providers...

 in small POPs or as an enterprise routing solution for Internet gateway or branch aggregation.It supports either 2 fixed Fast Ethernet
Fast Ethernet
In computer networking, Fast Ethernet is a collective term for a number of Ethernet standards that carry traffic at the nominal rate of 100 Mbit/s, against the original Ethernet speed of 10 Mbit/s. Of the fast Ethernet standards 100BASE-TX is by far the most common and is supported by the...

 ports, 2 fixed Gigabit Ethernet
Gigabit Ethernet
Gigabit Ethernet is a term describing various technologies for transmitting Ethernet frames at a rate of a gigabit per second , as defined by the IEEE 802.3-2008 standard. It came into use beginning in 1999, gradually supplanting Fast Ethernet in wired local networks where it performed...

 ports, or 1 fixed Gigabit Ethernet port via a Fixed Interface Card (FIC), as well as supporting 4 ejector-enabled PICs. The M7i router supports interface speeds of up to OC-12c/STM-4 and Gigabit Ethernet.

M10i

The M10i router is the a compact fully redundant M Series edge router.The M10i supports 8 ejector-enabled PICs via 2 built-in Flexible PIC concentrators, and interface speeds up to OC-12/STM-4 and Gigabit Ethernet.

M120

The M120 delivers support for 128 Gigabit Ethernet subscriber ports, with 10 Gigabit Ethernet
10 Gigabit Ethernet
The 10 gigabit Ethernet computer networking standard was first published in 2002. It defines a version of Ethernet with a nominal data rate of 10 Gbit/s , ten times faster than gigabit Ethernet.10 gigabit Ethernet defines only full duplex point to point links which are generally connected by...

 or OC 192 uplink capabilities.It is capable of supporting MPLS
Mpls
MPLS or Mpls can refer to:* Minneapolis, Minnesota, United States* Multiprotocol Label Switching, a data-carrying mechanism in computer networking...

 services at Layers 2 and 3, including Layer 3
Network layer
The network layer is layer 3 of the seven-layer OSI model of computer networking.The network layer is responsible for packet forwarding including routing through intermediate routers, whereas the data link layer is responsible for media access control, flow control and error checking.The network...

 VPNs, the M120 is designed to deliver superior redundancy and facilitate the transport of legacy Frame Relay and ATM traffic over high-bandwidth Ethernet links.

M320

The M320 is a high performance, 10 Gbit/s-capable, distributed architecture edge router. It offers up to 16 OC-192c/STM-64 PICs per chassis (32 per rack) or up to 64 OC-48c/STM-16 ports per chassis (128 per rack), with up to 320 Gbit/s throughput.It also supports provider edge services in 10-gigabit POPs with the ability to support up to 32 type 1 and type 2 PICs and up to 16 type-3 PICs for 10 Gbit/s uplinks.PICs are compatible with M40e, M120, T320, and T640.

Comparison

Platform M7i M10i M40e M120 M320
Aggregate Half-Duplex Throughput 10 Gbit/s 16 Gbit/s 51.2 Gbit/s 120 Gbit/s 320 Gbit/s
FPC Slots 1 built-in 2 built-in 8 FPC slots 4 FPC slots 8 FPC slots
Full Duplex Throughput per Slot 4 Gbit/s
additional 1 Gbit/s for FIC
4 Gbit/s 3.2 Gbit/s 10 Gbit/s 20 Gbit/s
PICs per Chassis 4 plus 2 additional fixed FE,
or 1 fixed GE ports
8 32 16 32
Chassis per Rack 24 9 2 4 2
Redundancy No Yes Yes Yes Yes


The Juniper M Series products are widely used in the large networks around the world.

Features

Features and services supported in M Series routers include advanced IP
Internet Protocol
The Internet Protocol is the principal communications protocol used for relaying datagrams across an internetwork using the Internet Protocol Suite...

/MPLS
Mpls
MPLS or Mpls can refer to:* Minneapolis, Minnesota, United States* Multiprotocol Label Switching, a data-carrying mechanism in computer networking...

 edge routing
Routing
Routing is the process of selecting paths in a network along which to send network traffic. Routing is performed for many kinds of networks, including the telephone network , electronic data networks , and transportation networks...

 services, a broad array of VPNs, network-based security, real-time voice and video, bandwidth on demand, rich multicast
Multicast
In computer networking, multicast is the delivery of a message or information to a group of destination computers simultaneously in a single transmission from the source creating copies automatically in other network elements, such as routers, only when the topology of the network requires...

 of premium content, IPv6
IPv6
Internet Protocol version 6 is a version of the Internet Protocol . It is designed to succeed the Internet Protocol version 4...

 services, granular accounting etc. These IP/MPLS M Series Multiservice Edge Routing
Edge device
Edge devices are routers, routing switches, integrated access devices , multiplexers, and a variety of metropolitan area network and wide area network access devices that provide entry points into enterprise or service provider core networks...

 platforms are deployed at the edge of provider networks, in small and medium cores, and in peering, route reflector and data-center applications.

A single M Series Multiservice Edge Routing platform can provide a single point of edge aggregation for thousands of customers over any access type — including ATM
Asynchronous Transfer Mode
Asynchronous Transfer Mode is a standard switching technique designed to unify telecommunication and computer networks. It uses asynchronous time-division multiplexing, and it encodes data into small, fixed-sized cells. This differs from approaches such as the Internet Protocol or Ethernet that...

, Frame Relay
Frame relay
Frame Relay is a standardized wide area network technology that specifies the physical and logical link layers of digital telecommunications channels using a packet switching methodology...

, Ethernet
Ethernet
Ethernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies....

 and TDM and at any speed from DS0 up to OC-192/STM
STM
STM, an abbreviation, may refer to:In technology:*Scanning tunneling microscope, a non-optical microscope*Signature tagged mutagenesis, a genetic technique to create random mutants...

-64 and 10 Gigabit Ethernet.

It also supports Layer 2 virtual circuits, Layer 2 VPNs, Layer 2.5 Interworking VPNs, Layer 3 2547 VPNs, VPLS, IPSec
IPsec
Internet Protocol Security is a protocol suite for securing Internet Protocol communications by authenticating and encrypting each IP packet of a communication session...

, GRE, IP over IP and other tunneling
Tunneling
Tunneling may refer to:* Digging tunnels * Quantum tunneling, the quantum-mechanical effect where a particle crosses through a classically-forbidden potential energy barrier...

 mechanisms.

It supports multiple levels of granular Quality of Service
Quality of service
The quality of service refers to several related aspects of telephony and computer networks that allow the transport of traffic with special requirements...

 per port, per logical circuit (DLCI, VC/VP, VLAN), and per channel (to DS0) for traffic prioritization. These comprehensive QoS functions include classification, rate limiting
Rate limiting
In computer networks, rate limiting is used to control the rate of traffic sent or received on a network interface. Traffic that is less than or equal to the specified rate is sent, whereas traffic that exceeds the rate is dropped or delayed...

, shaping, weighted round-robin scheduling
Weighted round robin
Weighted round robin is a scheduling discipline. Each packet flow or connection has its own packet queue in a network interface card. It is the simplest approximation of generalized processor sharing...

, strict priority queuing
Priority queue
A priority queue is an abstract data type in computer programming.It is exactly like a regular queue or stack data structure, but additionally, each element is associated with a "priority"....

, weighted random early detection, random early detection and packet marking. For network convergence applications, Layer 2 CoS can be mapped to Layer 3 CoS on a per DLCI, per VP/VC, or per-VLAN basis.

It also supports highly scalable J-Protect filtering capabilities, unicast reverse path forwarding and high-performance rate limiting for industry-leading DOS attack
Denial-of-service attack
A denial-of-service attack or distributed denial-of-service attack is an attempt to make a computer resource unavailable to its intended users...

 protection. The J-Protect security capabilities of the M Series platforms can be further enhanced with the Adaptive Services PIC, hardware that accelerates additional network-based security services such as high-speed NAT
Nat
Nat or NAT may refer to:* Nat., an abbreviation for Natural* Nat , a Burmese spirit worshipped in Myanmar in conjunction with Buddhism...

, stateful firewall
Stateful firewall
In computing, a stateful firewall is a firewall that keeps track of the state of network connections traveling across it. The firewall is programmed to distinguish legitimate packets for different types of connections...

with attack detection, DPI/IDP capabilities and J-Flow accounting. The M Series routing platforms have fulfilled the criteria for ICSA Labs Corporate Firewall Certification Version 4.0. ICSA Labs, an independent division of TruSecure Corporation, tests and certifies over 90 percent of security technology products in the world.
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