1-20
Cisco 2900 Series and 3900 Series Hardware Installation Guide
OL-18712-02
Chapter 1 Overview of the Routers
Hardware Features
Table 1-5
shows the number of internal and external slots on Cisco 2900 series and Cisco 3900 series
ISRs. It also shows the number of EHWICs and SMs that are supported in the router slots at any time.
Table 1-8 on page 1-23
shows memory specifications by router.
Table 1-5
Cisco 2900 series and Cisco 3900 series Slots and Module Configurations
Router
Modules and Cards
Internal
Modules
SPE
SM
1
1.
Service Module slots support the installation of legacy network modules and extended voice modules (EVMs) with an appropriate adapter. See the
Hardware Installation Guide
for the router.
EHWIC
2
2.
EHWIC slots support HWICs, WICs and VICs.
ISM
3
3.
AIMs are not supported.
PVDM3
4
2901
—
—
4 single-wide (EHWIC)
or
2 double-wide (DW-EHWIC)
1
2
2911
—
1 single-wide
4 single-wide (EHWIC)
or
2 double-wide (DW-EHWIC)
1
2
2921
—
1 single-wide
or
1 double-wide
4 single-wide (EHWIC)
or
2 double-wide (DW-EHWIC)
1
3
2951
—
2 single-wide
or
1 double-wide
4 single-wide (EHWIC)
or
2 double-wide (DW-EHWIC)
1
3
3925
Services Performance Engine 100
2 single-wide
or
1 single-wide + 1
double-wide
4 single-wide (EHWIC)
or
2 double-wide (DW-EHWIC)
1
4
3945
Services Performance Engine 150
4 single-wide
or
1 double-wide +
2 single-wide
4 single-wide (EHWIC)
or
2 double-wide (DW-EHWIC)
1
4
3925E
Services Performance Engine 200
2 single-wide
or
1 single-wide +
1double-wide
3 single-wide (EHWIC)
or
1 double-wide + 1 single-wide
0
3
3945E
Services Performance Engine 250
4 single-wide
or
1 double-wide +
2 single-wide
3 single-wide (EHWIC)
or
1 double-wide + 1 single-wide
0
3