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Chapter 1 Cisco XR 12404 Router Overview
Route Processor
PRP SDRAM
The PRP uses Error Checking and Correction (ECC) Synchronized Dynamic Random Access Memory (SDRAM) to store routing tables, protocols, network accounting applications, and to run Cisco IOS software.
Table
•One
•Two
Table | PRP DRAM Configurations | |
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Total |
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SDRAM | SDRAM Sockets | Number of DIMMs |
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512 MB1 | U15 (bank 1) | One 512 MB DIMM |
| U18 (bank 2) | or |
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| Two 256 MB DIMMs |
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1 GB | U15 (bank 1) | One 1 GB DIMM |
| U18 (bank 2) | or |
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| Two 512 MB DIMMs |
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2 GB | U15 (bank 1) | Two 1 GB DIMMs |
| U18 (bank 2) |
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1. Default shipping configuration. |
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Caution DRAM DIMMs must be
PRP SRAM
Static Random Access Memory (SRAM) provides 2 MB of secondary CPU cache memory. Its principal function is to act as a staging area for routing table updates, and for information sent to and received from the line cards. SRAM is not
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| Cisco XR 12404 Router Installation Guide |
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