Juniper Systems® and Cisco® Routers-A beginner's Guide
1. Juniper® Routers and Junos™
1.A Juniper® Routers Hardware and Features
1. Routers Types
Juniper routers are primarily available in the following series:
3. M-Series, and
However, here we discuss overview of different series of routers and architecture and functioning of a typical M-Series router. A Juniper router runs JUNOS™
networking software and supports Internet Protocols. The following discussion would enable us to understand the hardware and software components of a Juniper
router in more detail.
E-Series Routers: The E-series network router support a suite of Internet routing protocols, including BGP-4, IS-IS, OSPF, and RIP. E-series edge routers
ideal for service providers that operate high-capacity POPs.
The E-series family of Broadband Services Routers provide large bandwidth capacities and advanced QoS capabilities, and designed to act as the aggregation
point where service providers accept and authenticate remote connections from customers.
The E-series family provides bandwidth capacity options from 5, 10, or 40 Gbps up to 100 and 320 Gbps and supports high-port density WAN interfaces in a
Interface options include OC-3/STM-1, OC-12/STM-4, OC-48/STM-16, Fast Ethernet, and Gigabit Ethernet, as well as channelized DS-1, DS-3, E1, and E3.
J-Series: The J-series Services Router hardware platform that is suitable for smaller sites, including remote, branch, and regional offices. The J-series
routers offer advanced routing, QoS, security, and management policies.
M and T-Series: Juniper® enterprise level routers are primarily available in a. M-series and b. T-series routers. T-series and M-series platforms share a
common architecture that separates routing, forwarding, and services functions to facilitate scalability and security. The M-series family can be deployed in
both the service-provider environment and high-end enterprise environments.
The routers offer filtering, policing, rate limiting, and sampling where as the T-series platforms use the T-series Internet Processor for route lookups and
notification forwarding.. The M-Series routers are available in M5, M10, M20, M40, M160, and others. The T-series routers are available in T320 and T-640.
A typical chassis for M5 router is shown below (This is given for educational purpose only, please refer official website for exact information).
The front and rear views of M5 Internet Router are given.
M5 Chassis Front Panel:
M5 Chassis: Rear Panel:
The rear panel of the M5 router is shown in the above figure. It contains a routing engine, forwarding engine, and power supplies. These will be discussed in
the coming sections.