CISCO 3945E/K9 Cisco 3900 Series Router CISCO-3945E/K9 Overview
CISCO 3945E/K9 Cisco 3900 Series Router CISCO-3945E/K9 is a genuine edge and wide-area routing product from Cisco, a global name in networking whose platforms are used by enterprises, service providers and data-center operators alike. Belonging to the CISCO 3945E/K9 Cisco 3900 Series family, the CISCO 3945E/K9 unit is built to the original factory specification, so it integrates with existing Cisco deployments predictably and behaves exactly as the platform documentation describes. In the network, it is deployed as a standalone unit or as part of a larger managed network, following the standard operating procedures of the platform.
From a specification standpoint, it offers 4 ports for client, server or uplink connectivity. These are the original factory figures for this model, giving administrators a clear picture of what the unit can deliver before it enters service. Standard mounting, cabling and management practices apply, so deployment follows the same procedures as other Cisco hardware already running in the environment.
Typical deployments include branch and campus WAN connectivity, service-provider edge and MPLS deployments, and secure remote-site interconnect. Organizations commonly source it for refresh programs, capacity expansion and spares management, keeping a tested unit on hand so outages stay short and replacements are predictable. The factory detail for this unit reads: “Cisco 3945 router w/SPE250, 4GE, 3EHWIC, 3DSP, 4SM, 256MBCF, 1GB DRAM, IPB”. This makes it a practical choice when original-spec hardware is required at a predictable cost.
Every unit at LinkNewNet is inspected and tested before dispatch, and stock is graded, cleaned and verified for correct operation, including port status, console access and firmware state. Our warranty coverage and responsive technical support protect the purchase after it arrives, and our team can confirm revision levels and software compatibility before you order. For volume requirements we also offer configuration checks and staged delivery options.
Contact our sales team for current availability, lead time and shipping options for the CISCO 3945E/K9. We respond quickly with stock status and a firm quote, so you can plan the refresh or expansion with confidence.
Key Specifications
Applications
Enterprise WAN
Branch and campus routing with advanced services.
Service Provider
Edge routing for ISP and MPLS deployments.
Data Center
Interconnect core and aggregation layers reliably.
Buying a Pre-Owned CISCO 3945E/K9
Verify the unit is tested, firmware confirmed, and condition documented. Every unit is fully tested and warranty covered. Contact our team for current stock and availability.
CISCO 3945E/K9 Specification | |
Services and Slot Density | |
Embedded hardware-based cryptography acceleration (IPSec + Secure Sockets Layer [SSL]) | Yes |
Cisco Unified Communications Manager Express Sessions | 450 |
Cisco Unified SRST sessions | 1500 |
Total onboard WAN or LAN 10/100/1000 ports | 4 |
RJ-45-based ports | 4 |
SFP-based ports | 2 |
Service-module slots | 4 |
Doublewide service-module slots | 1 |
EHWIC slots | 3 |
Doublewide EHWIC slots | 1 |
ISM slots | 0 |
Online insertion and removal (OIR) | Services modules |
Onboard DSP (PVDM) slots | 3 |
Memory DDR2 ECC DRAM: Default | 1 GB |
Memory DDR2 ECC DRAM: Maximum | 2 GB |
Compact Flash (external): Default | Slot 0: 256 MB |
Slot 1: None | |
Compact Flash (external): Maximum | Slot 0: 4 GB |
Slot 1: 4 GB | |
External USB 2.0 slots (Type A) | 2 |
USB console port (Type B) (up to 115.2 kbps) | 1 |
Serial console port (up to 115.2 kbps) | 1 |
Serial auxiliary port (up to 115.2 kbps) | 1 |
Power-supply options | Internal: AC, PoE, and DC* |
Redundant power supply | Internal: AC, PoE, and DC* |
Power Specifications | |
AC input voltage | 100 to 240 VAC autoranging |
AC input frequency | 47 to 63 Hz |
AC input current range, AC power supply (maximum) | 7.1 to 3.0A |
AC input surge current | <50A |
DC Operating Input Voltage | 24Vdc - 60Vdc |
Max Input Current range, DC power supply | 33.2 - 12.4 |
DC Input Surge Current | <50A |
Typical power (no modules) (watts) | 158 |
Maximum power with AC power supply (watts) | 540 |
Maximum power with PoE power supply (platform only) (watts) | 540 |
Maximum endpoint PoE power available from PoE power supply (watts) | 520 |
Max power with DC input (W) | 574 |
Maximum endpoint PoE power capacity with PoE boost (watts) | 1040 |
Miscellaneous | |
Dimensions (H x W x D) | 5.25 x 17.25 x 18.75 in. (133.35 x 438.15 x 476.25 mm) |
Rack height | 3 rack units (3RU) |
Rack-mount 19in. (48.3 cm) EIA | included |
Rack-mount 23in. (58.4 cm) EIA | optional |
Wall-mount | No |
Package Weight | 51.85 lb(23.52 kg) |
Weight with AC power supply (no modules) | 39 lb (17.7 kg) |
Weight with PoE power supply (no modules) | 40 lb (18.1 kg) |
Typical weight (with modules) | 60 lb (27.2 kg) |
Airflow | Back to front |
Optional airflow kit (includes filter) | None |
Environmental specifications | |
Operating conditions | |
Temperature: 5906 ft (1800m) maximum altitude | 32 to 104ºF (0 to 40ºC) |
Temperature: 9843 ft (3000m) maximum altitude | 32 to 104ºF (0 to 40ºC) |
Temperature: 13123 ft (4000m) maximum altitude' | 32 to 86ºF (0 to 30ºC) |
Temperature: Short-term per NEBS/5906 ft (1800m) maximum altitude | 23 to 122°F (-5 to 50°C) |
Altitude | 4000m (13000 ft) |
Relative humidity | 5 to 85% |
Short-term (per NEBS) humidity | 5% to 90%, not to exceed 0.024 kg water/kg of dry air |
Acoustic: Sound pressure (typical/maximum) | 57.6/77.6 |
Acoustic: Sound power (typical/maximum) | 67.8/84.7 |
None operating conditions | |
Temperature | -40 to 158ºF (-40 to 70ºC) |
Relative humidity | 5 to 95% |
Altitude | 15,584 ft (4750m) |
Regulatory and Compliance | |
Safety | UL 60950-1 |
CAN/CSA C22.2 No. 60950-1 | |
EN 60950-1 | |
AS/NZS 60950-1 | |
IEC 60950-1 | |
EMC | 47 CFR, Part 15 |
ICES-003 Class A | |
EN55022 Class A | |
CISPR22 Class A | |
AS/NZS 3548 Class A | |
VCCI V-3 | |
CNS 13438 | |
EN 300-386 | |
EN 61000 (Immunity) | |
EN 55024, CISPR 24 | |
EN50082-1 | |
Telecom | TIA/EIA/IS-968 |
CS-03 | |
ANSI T1.101 | |
ITU-T G.823, G.824 | |
IEEE 802.3 | |
RTTE Directive | |
