Troubleshooting JUNOS Platforms
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This Appendix Discuss s: |
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Primary compon |
nts and characteristics of multiservice routers |
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Primary components and characteristics of Ethernet services routers and |
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switches (MX Series and EX Series); |
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P imary components and characteristics of security services gateways |
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End-of-life products. |
A–2 • JUNOS Platform Details
Troubleshooting JUNOS Platforms
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Reproduction |
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Compon nts and Characteristics of Multiservice Routers |
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The slide highlights the topics we cover in this appendix. We discuss the highlighted |
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JUNOS Platform Details • A–3
Troubleshooting JUNOS Platforms
The M7i and M10i Multis rvice Edge Routers build the proven performance and success of the M5 and M10 platforms by offering integrated IP services and Ethernet interface support, or outing Engine (RE) and Packet Forwarding Engine (PFE) redundancy, in the case of the M7i and M10i, respectively.
forThe M7i and M10i forward packets at an aggregate throughput rate of 6.4 Gbps and 12.8 Gbps, espectively.
M7i and M10iReproductionMultis rvice Edge Router Overview
The M7i is the Juniper Networks high-performance customer premise equipment (CPE) fering, targeting campuses and large offices needing very secure, dependable, high-speed WAN connectivity. The M7i delivers unprecedented processing power for secure connectivity and the simultaneous support of multiple services in a single platform. Combined with modular flexibility and easy-to-manage JUNOS Software, the M7i is the choice for consolidating multiple platforms and bringing carrier-class IP routing and security capabilities to the enterprise.
The M7i features a Fixed Interface Card (FIC) for Ethernet support and an integral Smart IP Services PIC. The M7i’s four PIC slots are open for additional interface support. You can order the M7i Compact Forwarding Engine Board (CFEB) with both an integral Smart IP Services PIC and an Adaptive Services PIC (AS PIC) to support additional service offerings such as Network Address Translation (NAT). Note that the integral AS PIC is not a field-replaceable unit (FRU); to add AS PIC functionality, order a new CFEB or install an AS PIC in one of the M7i’s four PIC slots.
Continued on next page.
A–4 • JUNOS Platform Details
Troubleshooting JUNOS Platforms
M7i and M10i Router Overview (contd.)
The M10i is targeted at dedicated access and core applications where space, power consumption, and high availability (HA) are wanted. The M10i does not include internal service PICs, but the platform does offer RE and CFEB redundancy.
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The M7i is only two rack units (RUs) in height (2 inches or 8.9 cm), which allows as |
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many as 24 M7i units in a single 19-inch equipment rack! At 4.9 RUs (8.7 inches or |
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22.1 cm), you can place as many as nine M10i units into a single rack. |
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JUNOS Platform Details • A–5
Troubleshooting JUNOS Platforms
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bothReproductionsimultaneously); when two are installed, power is load-balanced. |
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M7i and M10i Hardware Com onents |
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The hardware compon nts for the M7i and M10i are the following: |
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Sheet metal chassis. |
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Two power supplies (AC or DC): The maximum chassis power is 274 watts |
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the M7i and 427.2 watts for the M10i with a full complement of PICs |
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(8) and full redundancy. Power supplies can be either AC or DC (but not |
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Fan assemblies. |
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Routing Engines: The RE maintains the routing tables and controls the |
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routing protocols, as well as the JUNOS Software processes that control |
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the router's interfaces, the chassis components, system management, |
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and user access to the router. These routing and software processes run |
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on top of a kernel that interacts with the PFE. The M10i supports |
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redundant REs. |
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Compact Forwarding Engine Boards: The CFEB provides PFE |
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functionality. The M7i and M10i PFE supports the same |
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application-specific integrated circuit (ASIC) set used in other M Series |
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routers, with the same support for enhanced features like filtering and |
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accounting. The M10i supports redundant CFEBs. |
Continued on next page.
A–6 • JUNOS Platform Details
Troubleshooting JUNOS Platforms
M7i and M10i Hardware Components (contd.)
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Four (M7i) or eight (M10i) PICs: In addition, the M7i supports an integral |
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IP Tunneling Services PIC and an optional Adaptive Services PIC. |
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Inclusion of the latter provides enhanced services, such as stateful |
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firewall filters and NAT. When desired, you can equip the M10i with |
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services PICs using one or more of its PIC slots. |
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JUNOS Platform Details • A–7
Troubleshooting JUNOS Platforms
M7i and M10i Craft Int rface
The M7i and M10i Craft Int rface provides connections for access to the local RE. You can achieve access using any of the following:
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Ethernet management port: Connects the RE to an out-of-band |
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management network. |
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Console port: Connects a system console to the RE with EIA/TIA-232 |
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se ialReproductionasynchronous cable. Use the system console to access the CLI to |
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c nfigure the attached router. This port is active by default. |
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Auxiliary port: Connects a laptop or modem to the RE with EIA/TIA-232 |
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serial asynchronous cable. You can also use this port to access the |
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command-line interface (CLI). This port is disabled by default and you |
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must activate it with a set system ports auxiliary type |
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terminal-type command. |
The M7i platform’s Fixed Interface Card (FIC) or the M10i platform’s High-Availability Chassis Manager (HCM) card supports PIC online and offline buttons and alarm LEDs. You should take PICs offline before removing them from the chassis using the respective PIC online and offline button located on the FIC or HCM. After inserting a PIC into the chassis, press and hold the online and offline button to activate power to that PIC. When installed, the Adaptive Services PIC shares PIC slot 1/2/0 with the internal Tunnel Services PIC. The two PICs contend for the approximate 1 Gbps of bandwidth associated with the M7i platform’s 1/2/0 PIC slot.
A–8 • JUNOS Platform Details
Troubleshooting JUNOS Platforms
Side-to-Side Cooling
The M7i, M10i, and M20 incorporate side-to-side cooling using one to four fan trays. The M20’s cooling syst m consists of the following subsystems:
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Front cooling subsystem: Three front fan trays that cool the Flexible PIC |
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Concentrators (FPCs) and the System and Switch Board (SSB). These fan |
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the left front side of the chassis. |
•ReproductionRear cooling subsystem: One rear fan tray that cools the RE. This fan tray |
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is immediately to the right of the RE. |
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Power supply integrated fan: A built-in fan that cools each power supply. |
forIn the case of the M20, the four fan trays work together to provide side-to-side cooling. The fan trays plug directly into the router midplane. Each front fan tray is a single FRU that contains three fans. The rear fan tray is a FRU that contains two fans. Both front and rear fan trays are hot-swappable.
The M7i implements a single fan tray along the side of the chassis for side-to-side cooling. The fan tray is a single unit containing four fans. It is hot-removable and hot-insertable, and it connects directly to the router midplane. The failure of any one fan does not effect the operation of the remaining fans, which can continue to run indefinitely in the face of a single fan failure.
Continued on next page.
JUNOS Platform Details • A–9
Troubleshooting JUNOS Platforms
Side-to-Side Cooling (contd.)
The M10i supports redundant fan trays. Each fan tray is a single unit containing eight individually fault-tolerant fans. The left fan tray must be in place for proper cooling at all times. The right fan tray provides additional cooling and redundancy.
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Juniper Networks M Series routers can operate with missing or failed fans. The system |
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can measure the presence and rotational speed of all fan components. When chassis |
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temperatures rise, fan speed increases, and a yellow alarm generates. If the |
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temperature continues to rise, a red alarm generates; the system will shut itself down |
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if the high-temperature condition persists. |
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A–10 • JUNOS Platform Details
