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Catalyst 5000 series switches allow traditional shared-hub LANs to migrate toward large-scale, fully integrated internetworks. Catalyst 5000 series switches provide switched connections to individual workstations, servers, LAN segments, backbones, or other Catalyst 5000 series switches using a variety of media.
For descriptions of the Catalyst 5000 series switch hardware, refer to the Catalyst 5000 Series Installation Guide and the Catalyst 5000 Series Module Installation Guide.
Table 1-1 describes the Catalyst 5000 series switches.
| Switch Model | Description | Features |
|---|---|---|
| Catalyst 5002 | 2-slot switch |
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| 5-slot switch |
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| 5-slot switch |
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| 13-slot switch |
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The Catalyst 5002 and Catalyst 5000 switches have a single, integrated 1.2-Gbps switching backplane; the Catalyst 5505 and 5500 switches have a 3.6-Gbps switching backplane. All Catalyst 5000 series switches support switched 10/100-Mbps Ethernet/Fast Ethernet and Ethernet repeater connections, with backbone connections to Fast Ethernet, Gigabit Ethernet, ATM, FDDI, and CDDI.
Slot 1 in all Catalyst 5000 series switches is dedicated to the supervisor engine module. The Catalyst 5505 and 5500 switches support a redundant supervisor engine module in slot 2. The Catalyst 5500 switch supports LightStream 1010 ATM port adapters in slots 9 through 12. Slot 13 in the Catalyst 5500 switch is reserved for the ATM switch processor (ASP).
See the "Supervisor Engine Modules" section in this chapter and "Configuring the Supervisor Software," for more information on the Catalyst 5000 series supervisor engines.
All Catalyst 5000 series switches support wire-speed, single-stream, 10-Mbps Ethernet, 100-Mbps Fast Ethernet, and 1000-Mbps Gigabit Ethernet packet transmission for packet sizes from 64 to
1500 bytes. When 100 interface pairs are configured, the switches also support wire-speed, multiple-stream 10-Mbps Ethernet traffic with no packet loss.
Three priority levels are available on the switching bus to handle an oversubscribed interface: backplane-based, high priority, and low priority.
Three supervisor engine module types are available on Catalyst 5000 series switches: Supervisor Engine I, Supervisor Engine II, and Supervisor Engine III. Supervisor Engines II and III support the redundant supervisor engine option available in the Catalyst 5505 and 5500 switches.
Table 1-2 shows the supervisor engine module types and which Catalyst 5000 series switch supports each type.
| Switch | Supervisor Engine I | Supervisor Engine II | Supervisor Engine III |
|---|---|---|---|
| Catalyst 2926 | No | Yes | No |
| Catalyst 5002 | Yes | Yes | Yes |
| Catalyst 5000 | Yes | Yes | Yes |
| Catalyst 5505 | No | Yes | Yes |
| Catalyst 5500 | No | Yes | Yes |
Catalyst 5000 series supervisor engine software is factory installed on every supervisor engine module. Ethernet, Fast Ethernet, and Gigabit Ethernet modules also use this software. However, FDDI, Token Ring, and ATM LANE modules require additional software images, which are also factory installed onto the modules.
Catalyst 5000 series supervisor engine software has a command-line interface (CLI) that allows you to configure Catalyst 5000 series modules. For more information, see the "Command-Line Interfaces" chapter. For descriptions of the available CLI commands, refer to the Catalyst 5000 Series Command Reference publication.
Catalyst 5000 series supervisor engine software uses the Spanning-Tree Protocol to create fault-tolerant internetworks that ensure an active, loop-free data path between all nodes in the network. The Spanning-Tree Protocol uses an algorithm to calculate the best loop-free path throughout a Catalyst 5000 series switched network. For more information, see the "Configuring Spanning Tree" chapter.
Catalyst 5000 series switching modules use OSI Layer 2 and Layer 3 (Supervisor Engine III with a NetFlow Feature Card [NFFC]) LAN switching to prevent unicast packets that are sent between two switched ports from going to all the switched ports on the LAN. Catalyst 5000 series switches support these switching modules:
Catalyst 5000 series Ethernet and Fast Ethernet switching modules provide high-density switching for both wiring closet and data-center applications.
Catalyst 5000 series Ethernet modules connect workstations and repeaters at 10-Mbps port connection speeds; the Fast Ethernet modules connect workstations, servers, switches, and routers at up to 100-Mbps port connection speeds. The 10/100BaseTX Fast Ethernet switching module supports autosensing and autonegotiation, which allow Catalyst 5000 series switches to automatically sense and negotiate the correct port connection speed (10 or 100 Mbps) and duplex mode (half or full duplex) with an attached device. Fast Ethernet connections can interconnect multiple Catalyst 5000 series switches on multiple floors in different buildings of a campus. Fast Ethernet connections can act as redundant backup links between switches, and can expand existing Ethernet networks that need additional capacity.
Fast EtherChannel modules provide up to 800-Mbps (full-duplex) parallel bandwidth between a Catalyst 5000 series switch and another switch or host by grouping multiple Fast Ethernet interfaces into a single logical transmission path. The Port Aggregation Protocol (PAgP) provides automated configuration of Fast EtherChannel.
The Gigabit Ethernet switching module provides a high-performance gigabit switching backbone while the Supervisor Engine III Gigabit Ethernet interface serves as uplinks that aggregate traffic from high-density 10/100-Mbps wiring closets.
The Catalyst 5000 series switch employs VLANs and Spanning-Tree Protocol on all Ethernet, Fast Ethernet, and Gigabit Ethernet ports.
For information on configuring the Ethernet, Fast Ethernet, and Gigabit Ethernet modules, see "Configuring Ethernet, Fast Ethernet, and Gigabit Ethernet Switching Modules." For information on configuring VLANs, see "Configuring VTP, VLANs, VLAN Trunks, and VMPS."
Catalyst 5000 series switches support an optional FDDI/CDDI switching module. A/B port cards--which support single-mode optic fiber, multimode optic fiber, and CDDI/MLT-3 copper cabling--provide connectivity from the FDDI/CDDI interface to a variety of wiring plants. All A/B port cards allow you to configure the switch for single-attached, dual-attached, or dual-homed operation.
When configured as a single-attached station (SAS), you can connect either Port A or Port B on the FDDI module to an M port on a FDDI/CDDI concentrator. You can also connect the concentrator to the FDDI/CDDI rings through the concentrator's A/B ports. When configured as a dual-attached station (DAS), you must attach both Ports A and B of the FDDI/CDDI module to the FDDI/CDDI ring cabling.
For information on configuring the FDDI/CDDI modules, see "Configuring FDDI/CDDI Modules."
The following are LANE-specific characteristics:
The Catalyst 5000 series ATM modules include:
For information on configuring ATM modules, see "Configuring ATM Modules." For information on configuring PVC-Supported VLANs on ATM modules, see "Configuring PVCs for the ATM Module."
The Catalyst 5000 series RSM is a Route/Switch Processor-2 (RSP2)-based router module running Cisco IOS router software that connects directly into the Catalyst 5000 series switch backplane.
From the perspective of the Catalyst 5000 series switch, the RSM appears as a module with a single trunked port and one MAC address. From the perspective of the user, the RSM has one port. This port is unlike other Catalyst 5000 switch module ports because it has no external attributes such as media type or speed. Within this trunk port, the RSM can route between VLANs and between port adapters in an optional Versatile Interface Processor 2 (VIP2) module, which allows the RSM to emulate a Cisco 7500 series router.
For information on configuring the RSM, see "Configuring the Route Switch Module."
Catalyst 5000 series switches support optional Token Ring switching modules, which have 16 shielded RJ-45 connectors (or 16 Volition VF-45 connectors) for Token Ring connections. These ports allow full- or half-duplex connections to other switches, hubs, or end nodes. Catalyst 5000 series Token Ring modules provide the following features:
For information on configuring the Token Ring modules, see "Configuring Token Ring Modules."
Catalyst 5000 series switches support these software features:
A VLAN is an administratively defined broadcast domain. A VLAN enhances performance by limiting traffic; it allows the transmission of traffic among stations that belong to it and blocks traffic from other stations in other VLANs. VLANs can provide security barriers (firewalls) between end stations on different VLANs within the same switch. Only end stations within the VLAN receive packets that are unicast, broadcast, or multicast (flooded). The VLAN feature includes the following components:
For information on configuring VLANs, see "Configuring VTP, VLANs, VLAN Trunks, and VMPS."
Multicasting saves bandwidth by forcing the network to replicate packets only when necessary and by allowing hosts to join and leave groups dynamically. The multicast services feature includes the following components:
For information on configuring multicast services, see "Configuring Multicast Services."
Catalyst 5505 and 5500 switches offer you the option of using two Supervisor Engine II or two Supervisor Engine III modules. The two supervisor modules are installed in slots 1 and 2 of the chassis. When the switch powers up, the supervisor module that comes up first enters active mode, while the second supervisor module goes to standby. All network management functions occur on the active supervisor. The uplink ports on the standby supervisor are active; however, the console port on the standby supervisor module is inactive.
If the active supervisor module detects a major problem, it resets itself. The standby supervisor detects that the active supervisor has been reset and becomes the active supervisor. When the resetting supervisor comes back up, it enters standby mode.
An LED on the supervisor module indicates its status. The LED is green when the supervisor module is in active mode, orange when it is in standby mode, and red if there is a redundancy error condition. If you have two supervisor engines installed, the LED on the standby supervisor is orange.
For information on configuring supervisor resilience, see "Configuring the Supervisor Software."
Network security allows you to protect sensitive information from unauthorized users. The network security feature includes the following components:
For information on configuring network security, see "Configuring Network Security."
Catalyst 5000 series switches offer network management and control through the CLI or through alternative methods, such as CiscoWorks for Switched Internetworks (CWSI) and SNMP. The network management feature includes the following components:
For information on network management and control features, see "Configuring Network Management."
Catalyst 5000 series switches support the following SNMP types and enhancements:
Catalyst 5000 series switches allow RMON alarms for all MIB objects supported by the Catalyst 5000 series SNMP agent. In previous software releases, the ability of the Catalyst 5000 series switch to detect and report problems was limited to RMON objects in RFC 1757.
The Multilayer Switching (MLS) feature scales Layer 3 performance to high-performance link speeds by extending the MLS concept introduced in Cisco IOS software to LAN switching hardware. The NFFC also provides IGMP snooping, which allows a switch to examine IGMP packets and make forwarding decisions based on their content. A Supervisor Engine III with an NFFC also supports protocol filtering within a port VLAN. With protocol filtering enabled, ports are grouped on a protocol basis.
The Multiple Default IP Gateways feature allows you to configure up to three default IP gateways. Defining multiple default IP gateways provides redundancy. In the event that the primary gateway is not reachable, the switch uses the secondary default IP gateways in the order in which they were configured.
The Switch TopN Reports feature provides you with a report showing the metrics for port utilization, broadcasts, multicasts, unicasts, and errors, sorted by Switch TopN ports in the switch. Reports are available via either SNMP or CLI.
Note that the Switch TopN Reports utility cannot be used to generate reports on ATM or RSM ports.
UplinkFast provides fast convergence after a spanning-tree topology change and achieves load balancing between redundant links using uplink groups. An uplink group is a set of ports (per VLAN), only one of which is forwarding at any given time. Specifically, an uplink group consists of the root port (which is forwarding) and a set of blocked ports, except for self-looping ports. The uplink group provides an alternate path in case the currently forwarding link fails.
The Spanning-Tree Protocol backbone fast convergence feature, also known as the BackboneFast feature, reduces the time needed for the spanning tree to converge after experiencing a topology change caused by indirect link failures. This feature complements the UplinkFast and PortFast features. However, the UplinkFast feature is designed for access switches that experience a direct link failure, while the BackboneFast Convergence feature is designed for distribution and all switches that experience indirect link failures.
The RMON2 Configuration Group feature adds support for the RMON2 configuration group trap destinations MIB defined in RFC 2021. When you generate a trap, it is sent to all the hosts configured in the sysTrapReceiverTable and the trapDestTable, and is registered at the given User Datagram Protocol (UDP) port.
The Domain Name System (DNS) Device Name Usage feature enables you to configure the switch name automatically based on the switch IP address, if the system name is empty. Because the system name can be 255 characters long and the prompt can be only 20 characters long, the prompt is the first 20 characters of the system name.
The Standby Supervisor Port Usage feature allows the uplink ports on both the active and standby supervisor to be active at the same time. In software versions prior to release 4.1, the uplink ports on the standby supervisor were always in standby mode (inactive). The ports on the standby supervisor behave like ports on any other line module.
Allows you to perform tracing at the OSI Layer 3 level. This feature shows you the hop-by-hop path of packets through the network. Only Layer 3 devices, such as routers, are shown.
Catalyst 5000 series switches use the following standard Internet protocols:
Catalyst 5000 series switches support the following standard and enterprise-specific MIBs:
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