1168 | C-Series Debugging and Diagnosticsw w w . d e l l . c o m | s u p p o r t . d e l l . c o mSwitch Fabric overviewThe switch fabric is formed through the installed RPMs and line cards via C-Series Switch Fabric (CSF)ASICs.Each RPM includes four CSFs, each of which provides eight Backplane Data (BDP) links, one link foreach line card slot. In total, an RPM provides 32 BDP links of forwarding capacity.Each line card includes two CSFs. Six of the eight links on the CSFs are used as follows:• Up to four ports—ports 1 to 4—connect to the Forwarding Processors (FP). These ports are referred toas the Internal Dataplane (IDP) link.• Ports 5-8 connect to the RPMs. These ports are referred to as the BDP links.Figure 60-1. Architecture Diagram of the 1x48GE Line CardThe number of FPs varies with the line card type, as shown in Table 60-1.Switch Fabric link monitoringFTOS Switch Manager (SWMGR) task monitors the BDP links on the RPM. This task also monitors theoverall state of the switch fabric and reports any changes via Syslog messages.Table 60-1. FPs, CSFs, and IDP Links by Line Card TypeLine Card Type # of FPs # of CSFs IDP Links Used on CSF48x1GE 2 2 • Ports 1 and 2 connect to the FPs.• Ports 3 and 4 are unused.96x1GE 4 2 Ports 1-4 connect to the FPs.4x10GE 2 2 Ports 1-4 connect to the FPs.
