Cisco WS-C2950-24 Installation Manual page 21

Overview of the Routers
Cisco Integrated Services Routers Generation 2 (ISR G2) offer data functionality through Gigabit
Ethernet ports and security functionality with a virtual private network (VPN) accelerator on the
motherboard. Additional security features are available with add-on hardware and software.
Cisco 2900 series and Cisco 3900 series routers also provide voice IP telephony with digital signal
processor (DSP) capability; and voice gateway, DSP farm, IP-to-IP gateway, Cisco Unified
Communications Manager Express (CUCME) via Cisco IOS. Cisco Unity Express (CUE) is provided
through the use of add-on hardware.
This series of ISRs have new slots that support next generation Enhanced High-Speed WAN Interface
Cards (EHWICs), Internal Services Modules (ISMs), Packet Voice Data Modules (PVDM3s), Service
Modules (SMs), and Services Performance Engines (SPEs).
Access to the Cisco Multi-Gigabit Fabric (MGF) facilitates connection between switch ports on the ISR
without utilizing all of the external ports. A logical GE interface on the ISR connects external and
internal modules through the MGF for improved LAN and WAN switching.
Table 1-1
Series
Cisco 2900
Cisco 3900
The following sections are provided in this chapter:
Chassis Views, page 1-2
•
Locating the Serial Number, PID, VID and CLEI, page 1-12
•
Hardware Features, page 1-16
•
Slot, Port, and Interface Information, page 1-27
•
LED Indicators, page 1-29
•
Specifications, page 1-32
•
OL-18712-02
ISR G2 Models
Routers
2901
•
2911
•
2921
•
2951
•
3925
•
3925E
•
• 3945
• 3945E
Cisco 2900 Series and 3900 Series Hardware Installation Guide
1
C H A P T E R
1-1