
Model Number: |
CISCO3925/K9 Cisco 3900 Router ISR G2 |
Detail: |
Cisco 3925 w/SPE100(3GE.4EHWIC.4DSP.2SM.256MBCF.1GBDRAM.IPB) |
Cisco3925/K9 Overview
Cisco 3900 series Integrated Services Routers provide rich media collaboration and virtualization to the branch while maximizing operational cost savings. The Integrated Services Routers are future-enabled with support for high capacity DSPs (Digital Signal Processors) for future enhanced video capabilities, high powered service modules with improved availability, multi-core CPUs, Gigabit Ethernet switching with enhanced POE.
Quick Specs
Figure 1 shows the appearance of the CISCO3925/K9 for reference.

Table 1 shows the Quick Specs of the CISCO3925 /K9.
Product Code | CISCO3925/K9 |
Form Factor | Desktop |
Services Performance Engine module | w/SPE 100 |
Rack Units | 3U |
Interfaces | 3 integrated 10/100/1000 Ethernet ports with 2 ports capable of RJ-45 or SFP connectivity |
Expansion Slot(s) | 2 service module slots 1 Internal Services Module slot 4 onboard digital signal processor (DSP) slots 4 Enhanced High-Speed WAN Interface Card (EHWIC) slots |
RAM | 1 GB (installed) / 2 GB (max) |
Flash Memory | 256 MB (installed) / 8 GB (max) |
Dimensions | 47.6 cm x 43.8 cm x 13.3 cm |
Package Weight | 27.78 Kg |
Product Details
Figure 2 shows the front panel of the Cisco 3925 router for reference.

Note:
(1) | On/Off switch |
(2) | Power connector |
(3) | LEDs area |
Figure 3 shows the back panel of the Cisco 3925 router with slots and ports.

Note:
(1) | Compact flash 0 and 1 (0, right) |
(2) | EHWIC 0,1,2 and 3 (0, far right) |
(3) | USB serial port |
(4) | RJ-45 serial console port |
(5) | AUX port |
(6) | SFP 1 and SFP 2 (2, top) |
(7) | 10/100/1000 Ethernet port GE 0/1 and GE 0/2 (GE 0/1, down) |
(8) | 10/100/1000 Ethernet port GE 0/0 |
(9) | USB 0 and USB 1 (1,top) |
(10) | Ground |
(11) | Service module slots |
Modules and License
Table 2 shows modules and licenses for this router.
Models | Description |
C3900-SPE100/K9 | Cisco Services Performance Engine 100 for Cisco 3925 ISR. (It’s a configured item in the CISCO3925/K9.) |
SM-ES3G-16-P | Enhanced EtherSwitch Service Module, L2/L3 switching, 16* 10/100/1000 GE ports, Enhanced POE, Cisco EnergyWise technology |
SM-ES3G-24-P | Enhanced EtherSwitch Service Module, L2/L3 switching, 24 * 10/100/1000 GE ports, Enhanced POE, Cisco EnergyWise technology |
HWIC-2T | 2-Port Serial WAN Interface Card Cisco Router High-Speed WAN Interface card |
EHWIC-1GE-SFP-CU | Cisco 1900, 2900, 3900 Router EHWIC WAN Card EHWIC-1GE-SFP-CU |
EHWIC-4ESG | Four port 10/100/1000 Base-TX Gigabit Ethernet switch interface card for Cisco 1900 2900 3900 Routers |
ISM-SRE-300-K9 | Internal Services Module (ISM) with Services Ready Engine |
MEM-CF-256U1GB | 256MB to 1GB Compact Flash Upgrade for Cisco 1900,2900,3900 |
MEM-CF-256U2GB | 256MB to 2GB Compact Flash Upgrade for Cisco 1900,2900,3900 |
MEM-CF-256U512MB | 256MB to 512MB CF Upgrade for Cisco 1900,2900,3900 ISR |
MEM-CF-256U4GB | 256MB to 4GB Compact Flash Upgrade for Cisco 1900,2900,3900 |
MEMUSB-1024FT | 1GB USB Flash Token |
Licenses | Description |
L-FL-39-HSEC-K9= | Cisco 3900 License L-FL-39-HSEC-K9 U.S. Export Restriction Compliance license for 3900 series |
L-FL-39-SNA= | Cisco 3900 Router License – FL-39-SNA= SNA E-Delivery License for Cisco 3925/3945 for Cisco 3900 Series |
L-SL-39-APP-K9= | Cisco Application Experience License ISR 3900 series – includes licenses for: AppX, DATA and WAASX. |
L-SL-39-SEC-K9= | Cisco 3900 License L-SL-39-SEC-K9 Security E-Delivery PAK for Cisco 3900 Series |
CISCO3925/K9 Specification
Manufacturer | Cisco Systems, Inc |
Manufacturer Part Number | CISCO3925/K9 |
Device / Product Type | Router |
Type | Cisco 3925 Router ISR G2 |
Form Factor | Desktop – modular – 3U |
Connectivity Technology | Wired |
Data Link Protocol | Ethernet, Fast Ethernet, Gigabit Ethernet |
Capacity | Cisco Unified Communications Manager Express sessions : 250 Cisco Unified SRST sessions : 730 |
Network / Transport Protocol | IPSec, PPPoE, L2TPv3 |
Routing Protocol | OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policybased routing (PBR) |
Remote Management Protocol | SNMP, RMON |
Encryption Algorithm | SSL |
Features | Firewall protection, VPN support, MPLS support, Syslog support, content filtering, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Access Control List (ACL) support, Quality of Service (QoS), Dynamic Multipoint VPN (DMVPN) |
Compliant Standards | IEEE 802.3, IEEE 802.1Q, IEEE 802.1ah, IEEE 802.1ag |
DRAM Memory | 1 GB (installed) / 2 GB (max) |
Flash Memory | 256 MB (installed) / 8 GB (max) |
LED Status Lights Indicators | Link activity, power |
Connectivity Slots | |
Router Interfaces | WAN : 3 x 10Base-T/100Base-TX/1000Base-T – RJ-45 Management : 1 x console – RJ-45 Management : 1 x console – mini-USB Type B Serial : 1 x auxiliary – RJ-45 Hi-Speed USB : 2 x 4 PIN USB Type A 2 x SFP (mini-GBIC) |
Expansion Slots Total (Free) | 4 ( 4 ) x EHWIC 4 ( 4 ) x PVDM 2 ( 1 ) x CompactFlash Card 2 ( 2 ) x service module (SM) 1 ( 1 ) x Expansion Slot |
Power Supply | |
Power Device | Power supply – internal |
Voltage Required | AC 120/230 V ( 50/60 Hz ) |
Dimensions / Weight / Miscellaneous | |
Width | 47.6 cm (18.74 in) |
Depth | 43.8 cm (17.24 in) |
Height | 13.3 cm (5.24 in) |
Package Weight | 27.78 kg (61.24 lbs) |
Weight | 17.7 kg (39.02 lbs) |
Compliant Standards | CISPR 22 Class A, CISPR 24, EN55024, EN55022 Class A, EN50082-1, AS/NZS 60950-1, AS/NZ 3548 Class A, CAN/ CSA-E60065-00, ICES-003 Class A, FCC CFR47 Part 15, EN300-386, UL 60950-1, IEC 60950-1, EN 60950-1, CSA C22.2 No.60065, BSMI CNS 13438, NEBS |
System Software | Cisco IOS IP Base |