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This chapter provides an overview of the Catalyst 5000 family switches and consists of these sections:
The Catalyst 5000 family switches include:
Note Throughout this publication and all Catalyst 5000 family switches publications, the phrase Catalyst 5000 family switches refers to all Catalyst 5000 family switches, unless otherwise noted.
Table 1-1 lists and describes the Catalyst 5000 family switches and supported modules.
Note If you plan to use the Gigabit EtherChannel module (WS-X5410) with Supervisor Engine I or II or in a Catalyst 5000 chassis, use supervisor engine software release 4.3(1) or later in conjunction with Gigabit EtherChannel module software release 4.3(1) or later. This hardware was not fully tested with the Gigabit EtherChannel module in earlier releases. The Gigabit EtherChannel module is supported in a Catalyst 5505, 5509, or 5500 chassis with a supervisor engine module in software release 4.2(1) or later.
| Switch | Description | Features |
|---|---|---|
Catalyst 5002 |
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| Note Your Catalyst 5002 switch may have one of two power supplies. To determine which power supply your switch has, refer to the "Product Overview" section of the Catalyst 5000 Family Installation Guide. | ||
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Catalyst 5000 |
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Catalyst 5505 |
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Catalyst 5509 |
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Catalyst 5500 |
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| 1Because of physical limitations, the Catalyst 5002 does not support the two-slot Ethernet switching module (WS-X5014 ).
2The Catalyst 5002 does not support the Gigabit EtherChannel switching module (WS-X5410). 3FDDI/CDDI = Fiber Distributed Data Interface/Copper Distributed Data Interface. 4RSM = Route Switch Module. 5VIP2 = Versatile Interface Processor 2. 6Catalyst 5000 family modules can be installed in slots 2 through 12. Slot 13 is reserved for either an ATM switch processor or a switch route processor (SRP). 7If you install LightStream 1010 port adapters in the Catalyst 5500 switch, you must install an ATM switch processor module in slot 13. 8If you install Catalyst 8510 line modules in the Catalyst 5500 switch, you must install an SRP module in slot 13. |
Note The Route Switch Module (RSM) is a router module that runs
standard IOS software, and provides multiprotocol routing for Ethernet and Token Ring
VLANs in Catalyst 5000 family switches. For more information, refer to the Catalyst 5000
Family Switch Route Switch Module Installation and Configuration Note.
The Versatile Interface Processor 2 (VIP2) is a Catalyst 5000 family module. When the
VIP2 is used with an RSM, it provides direct external network connections through a
variety of media with the same port adapters used on Cisco 7500 series routers. For more
information, refer to the Route Switch Module Catalyst VIP2-15 and VIP2-40 Installation
and Configuration Note.
Refer to the Catalyst 5000 Family Installation Guide for information on installing all Catalyst 5000 family switches. To configure the software for all Catalyst 5000 family switches, refer to the Software Configuration Guide for your switch. Refer to the Catalyst 5000 Family Supervisor Engine Installation Guide for information on installing the supervisor engine in the Catalyst 5000 family switches.
The Catalyst 5000 family switches can contain any combination of the following modules, except where noted:
| Ethernet, Fast Ethernet, and Gigabit Ethernet Switching Modules |
| ATM Modules |
| LightStream 1010 ATM Switching Modules (Catalyst 5500 switch only)2 |
| Catalyst 8510 Campus Switch Router line modules (Catalyst 5500 switch only)3 |
| Route Switch Module (WS-X5302)4 |
| Route Switch Module/VIP2 Module4 |
| Token Ring Modules |
| Network Analysis Module (WS-X5380) |
| Fabric Integration Module (Catalyst 5500 switch only) |
| 1These modules are Class 1 laser products. See the "Working with Lasers" section of the "Site Preparation and Safety Guidelines" document.
2For information on LightStream 1010 ATM port adapters, refer to the ATM Port Adapter Installation Guide for the Catalyst 8540 MSR, Catalyst 8510 MSR, Catalyst 5500, and LightStream 1010 and the Processor Install Guide for the Catalyst 8540 MSR, Catalyst 8510 MSR, Catalyst 5500, and LightStream 1010. 3For information on Catalyst 8510 campus switch router line modules, refer to the ATM Port Adapter Installation Guide for the Catalyst 8540 MSR, Catalyst 8510 MSR, Catalyst 5500, and LightStream 1010. 4The Catalyst 5002 switch does not support the RSM or the RSM/VIP2 module. |
Note This guide does not describe the supervisor engines, which are required in all Catalyst 5000 family switches. For information on supervisor engines, refer to the Catalyst 5000 Family Supervisor Engine Installation Guide.
Note A minor hardware problem that causes the switching bus to time out occurs during the power-on self-test on the supervisor engine if the configuration includes a single WS-X555x (Supervisor Engine II) and any combination of the WS-X5234-RJ45, WS-X5236-FX-MT, and WS-X5237-FX-MT modules. This problem occurs during boot-up and is not software dependent.
This usage guideline applies only to switch configurations that consist of a single Supervisor Engine II (WS-X555x) and any combination of the WS-X5234-RJ45, WS-X5236-FX-MT, or WS-X5237-FX-MT modules. Redundant configurations of Supervisor Engine II, Supervisor Engine IIG (WS-X5540), Supervisor Engine III (WS-X5530), and Supervisor Engine IIIG (WS-X5550) are not affected by this problem.
This section describes the port addresses, the Enhanced Address Recognition Logic (EARL) feature, and the module hot-swapping feature.
Each port (or interface) in the switch is designated by two different types of addresses: physical and MAC-layer. The physical interface address is the actual physical location (slot and port) of the interface connector within the chassis. The system software uses the physical addresses to control activity within the switch and to display status information. These physical slot and port addresses are not used by other devices in the network; they are specific to the individual switch and its internal components and software. For more information, see the "Physical Port Addresses" section.
The MAC-layer address is a standardized data link layer address that is required for every port or device that connects to a network. Other devices in the network use these addresses to locate specific ports in the network and to create and update routing tables and data structures. The switches assign and control the MAC-layer addresses of their interfaces (see "MAC-Layer Addresses" section.)
Physical port addresses specify the actual physical location of each module port on the rear of the switch, as shown in Figure 1-6, for the Catalyst 5500 switch. The address is a two-part number in the format slot/port number. The first number identifies the slot in which the module is installed. Module slots are numbered from top to bottom starting with 1. The second number identifies the physical port number on the module. The port numbers always begin at 1 and are numbered from left to right, facing the rear of the switch. In some cases, the ports are physically identified on the module front panel. The number of additional ports (n/1, n/2, through n/N) depends on the number of ports available on the module.
Interface ports maintain the same address regardless of whether other modules are installed or removed. However, when you move a module to a different slot, the first number in the address changes to reflect the new slot number. For example, on a 12-port 100BaseTX switching module in slot 2, the address of the left port is 2/1 and the address of the right port is 2/12. If you remove the 12-port 100BaseTX switching module from slot 2 and install it in slot 4, the addresses of those same ports become 4/1 through 4/12.
You can identify module ports by checking the slot and port location on the back of the switch. You also can use software commands to display information about a specific interface, or all interfaces, in the switch.
For additional information on these commands, refer to the Command Reference for
your switch.
All network interface connections (ports) require a unique MAC-layer address. The MAC-layer address of an interface is stored in electrically erasable programmable read-only memory (EEPROM) on a component that resides directly on the interface circuitry. The switch system code reads the EEPROM for each interface in the system, learns the MAC addresses, and then initializes appropriate hardware and data structures. Each virtual LAN (VLAN) in the spanning tree has one unique MAC address.
This addressing scheme gives the switch the intelligence to identify the state (connected or not connected) of each interface. When a module is hot swapped, the MAC-layer address changes with the module. The supervisor engine module also has a list of up to 1024 MAC addresses that it uses for multiple purposes, such as assigning unique identifiers for each VLAN spanning-tree bridge.
The Enhanced Address Recognition Logic (EARL) is a custom Catalyst 5000 family switch component similar to the learning bridge or content-addressable memory (CAM) of other types of network switches and routers. The EARL learns source MAC addresses automatically and saves them in a RAM address table with VLAN and port information. The EARL uses port information contained in learned entries to forward a packet to its destination address (DA).
The supervisor engine module has separate hardware-supporting switching and network management. Because ASICs fail less often than processors, this separation allows the EARL ASIC to forward packets across the switching bus even if the network management processor fails.
Catalyst 5000 family switches allow you to remove and replace switching modules without powering down the switch. This feature is known as hot swapping.
When you remove or insert a switching module while the switch is powered on and operating, the system performs the following procedures:
1. Scans the backplane for configuration changes.
2. Initializes all newly inserted switching modules, notes any removed modules, and places them in the administratively shutdown state.
3. Places any previously configured interfaces on the switching module back to the state they were in when they were removed. Any newly inserted interfaces are put in the administratively shutdown state, as if they were present (but unconfigured) at boot time. If you insert a similar switching-module type into a slot, its ports are configured and brought online up to the port count of the original switching module.
The system runs diagnostic tests on any new interfaces. If the test passes, the system is operating normally. If the new switching module is faulty, the system resumes normal operation but places the new module in the "faulty" state.
If the diagnostic test fails, the system crashes, which usually indicates that the new switching module has a problem in the bus and should be removed.
Note For more information on hot swapping redundant supervisor engine modules and other switch components, refer to the Catalyst 5000 Family Supervisor Engine Installation Guide.
When you hot swap switching modules, the system displays status messages on the console screen. The following example display shows the messages logged by the system when a switching module is removed from slot 2. If you use the show port command to query the module before reinstalling a module to replace the removed one, the system responds, "Module 2 is not installed." When the module is reinserted, the system marks the module as ready again.
Posted: Sat Jan 18 12:37:21 PST 2003
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