Cisco 10720 Configuration Guide - Page 29

Chapter 1 Product Overview Physical and Functional Overview Cisco 10720 Internet Router Hardware Features The Cisco 10720 Internet Router provides two dedicated card slots that are not interchangeable or hot swappable. (See Figure 1-2.) The upper slot contains an uplink card. The lower slot contains an Ethernet access card. • The uplink card slot provides the following options: - DPT or POS/DPT uplink card: one OC-48c/STM-16c DPT port or two POS optical ports with an aggregate bandwidth of approximately 5 Gbps - RPR/SRP uplink card: two OC-48 RPR/SRP (Resilient Packet Ring/Spatial Reuse Protocol) ports that support small form-factor pluggable (SFP) modules, with an aggregate bandwidth of approximately 5 Gbps - Console/auxiliary card: console and serial ports only For more information about the uplink card, refer to the Cisco 10720 Internet Router Uplink Cards Installation and Configuration publication. • The Ethernet access card provides either Fast Ethernet or combined Fast Ethernet and Gigabit Ethernet connectivity. For more information about the access card, refer to the Cisco 10720 Internet Router Access Card Installation and Configuration publication. The uplink card with only console and serial ports can be used with one of the Ethernet access cards to customize the Cisco 10720 Internet Router as an Ethernet-only router. Figure 1-2 1 Uplink Card and Access Card PWARCSRAXASACPRPTTIKRIHTVEERRU 57681 2 CONSOLE AUX RESET PSCOYOASWVRTEEDERRFMTAEISLMTPAUS AC OK DC OK OTF LINK/A1C00TCIAVMREB (DPGSF)AIL PCOAWREDRFAIL WODITROHNINTNSHOEERTPTROCEWAMEBORLVEOESN AC OK DC OK OTF INPUT 100-200- 50/60Hz 2-5A 1 Uplink card 2 Access card The main processing board contains a central processing engine that consists of two sets of processors that manage the control plane traffic and the data plane traffic. • The Parallel eXpress Forwarding (PXF) network processors manage the data plane and support IP forwarding as well as advanced QoS features. • The multiple processors in the PXF process packets simultaneously at the rate of approximately 2 Mpps. The Cisco 10720 Internet Router can be deployed directly over fiber, thus allowing service providers to offer IP plus optical access without the need for extensive SONET/Synchronous Digital Hierarchy (SDH) optical transport infrastructure. Additional overview information about the router can be located in the Cisco 10720 Internet Router Overview, which accompanies other marketing materials related to the Cisco 10720 Internet Router. 78-13062-10 Cisco 10720 Internet Router Installation and Configuration Guide 1-3