T640 - Router Juniper - Free user manual and instructions
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| Product Type | Router |
| Brand | Juniper Networks |
| Model | T640 |
| Form Factor | Modular chassis, rack-mountable |
| Dimensions (W x H x D) | 17.5 x 7.5 x 17.5 in (44.5 x 19.1 x 44.5 cm) |
| Weight | Approximately 130 lb (59 kg) fully loaded |
| Power Supply | AC: 120/240 VAC, 50/60 Hz; DC: -48 VDC (redundant options) |
| Power Consumption | Up to 4000 W maximum |
| Cooling | Front-to-back airflow, hot-swappable fan trays |
| Routing Capacity | Up to 1.28 Tbps (full-duplex) |
| Supported Protocols | IPv4, IPv6, MPLS, BGP, OSPF, IS-IS, and more |
| Fiber Optic Support | SONET/SDH, Ethernet (10/100/1000 Mbps, 10 GbE, 40 GbE, 100 GbE) |
| Redundancy | Hot-swappable power supplies, fan trays, and line cards |
| Management | Juniper Junos OS, CLI, SNMP, J-Web |
| Operating Temperature | 32°F to 104°F (0°C to 40°C) |
| Storage Temperature | -40°F to 158°F (-40°C to 70°C) |
| Humidity | 5% to 90% non-condensing |
| Installation | Rack mount included; requires 19-inch rack |
| Maintenance | Regular cleaning of air filters; replace as needed |
| Safety Precautions | Proper grounding required; disconnect power before servicing |
| Spare Parts | Line cards, power supplies, fan trays, control boards available |
| Repairability | Modular design; field-replaceable units (FRUs) |
| Warranty | Standard 1-year; extended available |
Frequently Asked Questions - T640 Juniper
How do I reset the Juniper T640 to factory defaults?
Connect to the console port and reboot the router. During boot, press the Space bar to enter the boot loader. At the prompt, type boot -s to boot into single-user mode. Then run load factory-default and commit.
What is the maximum power consumption of the T640?
The maximum power consumption is approximately 4000 W when fully configured with line cards and advanced features. Actual consumption varies by configuration.
Can I upgrade the software on a T640 without disrupting service?
Yes, Junos OS supports unified ISSU (In-Service Software Upgrade) for certain upgrades. Check the release notes for compatibility and procedure.
How many line card slots does the T640 have?
The T640 chassis has 8 slots for line cards, supporting a variety of interfaces including SONET, Ethernet, and ATM.
What type of power supplies does the T640 support?
It supports both AC and DC power supplies. AC supplies accept 120/240 VAC, while DC supplies accept -48 VDC. Redundant options are available.
How do I connect to the T640 for management?
You can connect via the console port (RJ-45 or DB-9) using a terminal emulator, or remotely via SSH/Telnet after setting an IP address on the management Ethernet port.
What is the cooling mechanism of the T640?
The T640 uses front-to-back airflow with hot-swappable fan trays. Ensure proper ventilation in the rack to maintain operating temperature.
Can I replace a failed power supply while the router is running?
Yes, the T640 supports hot-swappable power supplies. Simply remove the faulty unit and insert a new one after verifying compatibility.
What are the standard safety precautions for the T640?
Always ensure proper chassis grounding before connecting power. Do not operate without covers. Disconnect all power sources before servicing.
How long is the warranty for the T640?
The standard warranty is 1 year from date of purchase. Extended warranty and support contracts are available through Juniper Networks.
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