Switch route processor (SRP) modules perform system management, routing table calculations and maintenance, forwarding table computations, statistics processing, configuration storage, and other control plane functions. The SRP module identifies which line modules are physically present in the chassis and monitors and controls vital functions on the line modules.
Each SRP module (Figure 5) is a PowerPC-based system with its own memory, nonvolatile storage (NVS), and power converter. The SRP module works with the SFM modules and contains a switch fabric slice common to both modules. See Fabric Slices for more information.
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Note: Because of different physical dimensions and switch fabric capabilities, SRP modules are not interchangeable between all routers. For example, the SRP–100 used in the E320 router cannot be used in other E-series routers, and vice versa. See the E120 and E320 Module Guide for SRP module compatibility. |
Figure 5: Representative SRP Module
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