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Routers and Switches
A Cisco 2501 router.
A Cisco 2514 router.
Cisco 2500 routers come with Flash EPROM technology for simplified software maintenance. These systems support a variety of Cisco IOS software feature sets, so you can choose a feature set that supports your specific protocol environment. The software feature sets range from an IP and bridging-only to the full array of Cisco`s software functionality, including APPN and RMON.
Mission-specific models contain less memory and less hardware functionality to support a subset of protocols. Each mission-specific model can be upgraded to full router capability by downloading a new Cisco IOS software feature set and, if necessary, adding memory.Cisco 2500 series models can be divided into the following categories:
A Cisco 7505 router.
The Cisco 7500 series includes the following routers: Cisco 7505, Cisco 7507, Cisco 7513, and Cisco 7576. The Cisco 7500 series routers support multiprotocol, multimedia routing and bridging with a wide variety of protocols and any combination of Asynchronous Transfer Mode (ATM), Basic Rate Interface (BRI), channel attachment, channelized E1, T1, and T3, Ethernet, Fast Ethernet, Fiber Distributed Data Interface (FDDI), High-Speed Serial Interface (HSSI), multichannel, Primary Rate Interface (PRI), Packet over OC-3, synchronous serial, and Token Ring media.
A Cisco Catalyst 1900 switch.
The Catalyst 1900 switches provide up to 24 10-Mbps switched Ethernet connections to 10BaseT-compatible devices (such as single workstations and 10BaseT hubs) and one 10-Mbps connection to an AUI. The switches also provide two 100BaseT connections to servers and backbones.
A Cisco Catalyst 2820 switch.
The Catalyst 2820 series Ethernet switches provide 25 10-Mbps switched Ethernet connections: 24 10-Mbps connections to 10BaseT-compatible devices (such as single workstations and 10BaseT hubs) and one 10-Mbps connection to an AUI. Switches with the optional Catalyst 2820 modules installed can provide 100BaseT, FDDI, and ATM connectivity to servers and backbones.
A Cisco Catalyst 5500 switch.
The Catalyst 5500 switch provides high-density switched Ethernet and Fast Ethernet, Token Ring, and Asynchronous Transfer Mode (ATM) switching for both wiring closet and data-center applications, using unshielded twisted-pair (UTP) multimode and single-mode fiber-optic cable. The Catalyst 5500 switch supports switched 10-Mbps Ethernet, Ethernet repeater connections, and switched 100-Mbps Fast Ethernet with backbone connections to Fast Ethernet, ATM, Fiber Distributed Data Interface (FDDI), and Copper Distributed Data Interface (CDDI). Typically, Catalyst 5500 Ethernet interfaces connect workstations and repeaters while the Fast Ethernet interfaces connect to workstations, servers, switches, and routers.System Description
The Catalyst 5500 switch chassis has 13 slots. Slot 1, which is dedicated for the supervisor engine II module, provides switching, local and remote management, and dual Fast Ethernet interfaces. Slot 2 contains an additional redundant supervisor engine II as a backup in case the first module fails. A failure of the active supervisor engine II is detected by the standby module which takes control of the supervisor engine II switching functions.
The remaining slots are available for any combination of Ethernet, Fast Ethernet, FDDI/CDDI, and ATM. If a redundant supervisor engine II is not required, slot 2 is available for any module. The Catalyst 5500 accepts LightStream 1010 ATM modules in chassis slots 9 through 13. Slot 13 is a dedicated slot, which accepts only the ATM Switch Processor (ASP) module.
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