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2.3 Base Switch Overview
The CP921RC‐30X features the following components on the Base Switch board:
2.4 24-Port GbE Switch
The Base Switch Board incorporates a Switch that can operate at 10/100/1000
Mbps for 24 Gigabit Ethernet ports, and on select models includes two 10GbE
ports and two GbE ports. This Switch integrates sophisticated advanced L3
switching features for cost‐effective, highly‐manageable enterprise networks. The
Switch performs IPv6 routing and transition services in hardware, allowing
deployment of L3 switches that are future‐proof, highly‐manageable L3
networks, and enable cost‐effective transition from IPv4 to IPv6.
The Switch interfaces to the Management Board via a 32‐bit PCI bus running at 66
MHz, through which the Processor on the Management Board configures the
Switch.
The Switch interfaces to the three octal PHYs through the Serial Gigabit Media
Independent Interface (SGMII) interface. The Switch supports PHY management
through the serial Management Data Input/Output (MDIO) / Management Data
Clock (MDC) interface.
Fabric Link
As shown in Figure 2‐1, all 24 ports are routed to the Rear Transition Module
Connection
(RTM) for the CPC921RC‐300 and CPC921RC‐300‐IND. For the CP921RC‐301,
Ports 1–21 and Port 24 are routed to the RTM. Ports 22 and 23 are routed to the
front panel 1GbE SFP ports.
Port 24 is routed to the Fabric‐to‐Fabric link of the PICMG 2.16 backplane only
when using the TRCP9xx‐5RC‐F RTM as shown in Figure 2‐2.
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• 24‐Port GbE Switch Fabric with three Octal 1GbE PHYs
• Complex Programmable Logic Device (CPLD)
• IPMI Controller (IPMC)
• 10Gigabit/1Gigabit options, including:
– Two 10GbE ports with 10GbE PHY and SFP+ cages
– Two 1GbE ports with GbE PHY and SFP cages
• Front panel LEDs for link/activity status and reset
• Temperature sensors
Product Description 27
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