
System Requirements
System Requirements
This section describes the system requirements for Release 12.1(2)XF5 and includes the following sections:
•Memory Requirements
•Hardware Supported, page 2
•Determining Your Software Release, page 3
•Upgrading to a New Software Release, page 3
•Feature Set Tables, page 4
Memory Requirements
This section describes the memory requirements for the Cisco IOS feature sets supported by Cisco IOS Release 12.1(2)XF5 on the Cisco 811 and 813 Routers.
Table 1 Memory Requirements for the Cisco 811 and 813 Routers
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  | Flash  | DRAM | Runs  | |
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Cisco 811  | IP  | 4 MB  | 8 MB  | RAM  | ||
and 813  | 
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IP Plus  | 4 MB  | 8 MB  | RAM  | |||
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  | IP/IPX Plus  | 4 MB  | 8 MB  | RAM  | ||
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  | IP/FW  | 4 MB  | 8 MB  | RAM  | ||
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  | IP/FW Plus IPSec 56  | 8 MB  | 8 MB  | RAM  | ||
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  | IP/IPX/FW Plus IPSec 56  | 8 MB  | 8 MB  | RAM  | ||
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Hardware Supported
Cisco IOS Release 12.1(2)XF5 supports the following Cisco 800 series routers:
•Cisco 811
•Cisco 813
For detailed descriptions of new hardware features, see New and Changed Information, page 6.
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  | Table 2  | Supported Interfaces for the Cisco 800 Series  | 
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  | Analog Phone  | Console  | |
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  | Router  | 
  | Ethernet LAN Ports  | Ethernet WAN Ports  | Ports  | Ports  | |
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  | Cisco 811  | 
  | One 10BaseT   | • One ISDN BRI U,  | –  | ||
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  | integrated DSU   | 
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  | • One ISDN BRI S/T   | 
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  | Cisco 813  | 
  | One 10BaseT   | • One ISDN BRI U,  | Two   | ||
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  | integrated DSU   | 
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  | • One ISDN BRI S/T   | 
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  | Release Notes for the Cisco 811 and 813 Routers for Cisco IOS Release 12.1(2)XF  | 
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