Table Of Contents
Internal Power Supply Connector
Product Overview
This chapter provides these topics that describe the Catalyst 2900 series XL switches, hereafter referred to as the switches.
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Switch features, including management options
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Features
The switches are stackable 10/100 Ethernet switches to which you can connect workstations, Cisco IP Phones, and other network devices such as servers, routers, and other switches. The 2900 XL LRE switches employ Long-Reach Ethernet (LRE), a very-high-data-rate digital subscriber line (VDSL)-based technology that allows an Ethernet network to reach distances up to 4921 feet (1500 meters). The switches can be deployed as backbone switches, aggregating 10/100 and Gigabit Ethernet traffic from other network devices.
The Catalyst 2900 XL switches have these features:
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Figure 1-1 shows the switch models.
Figure 1-1 Catalyst 2900 Series XL Switches
Management Interface Options
You can configure and monitor individual switches and switch clusters by using these interfaces:
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You can manage the switch from an SNMP-compatible management station that is running platforms such as HP OpenView or SunNet Manager. The switch supports a comprehensive set of MIB extensions and four Remote Monitoring (RMON) groups.
For more information about CMS, the CLI, and SNMP refer to the Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide.
Front-Panel Description
Depending on the model, the switch front panels can have up to twenty-four 10/100 ports (See Figure 1-2), up to twelve 100BASE-FX ports (See Figure 1-3), two module slots (see Figure 1-3), and up to twenty-four Long-Reach Ethernet ports (See Figure 1-4). All switches have a set of LEDs and a Mode button. This section describes these front-panel components.
Figure 1-2 Catalyst 2900 XL Front-Panel 10/100 Ports
Figure 1-3 Catalyst 2900 XL 100BASE-FX ports and Module Slots
Figure 1-4 Catalyst 2900 LRE XL 10/100 and LRE Ports
10/100 Ports
The 10/100 switch ports (see Figure 1-2 and Figure 1-4) can connect to any compatible network device up to 328 feet (100 meters) away:
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Note
When connecting the switch to workstations, servers, routers, and Cisco IP Phones, be sure that the cable is a straight-through, twisted-pair cable. When connecting the switch to switches or hubs, use a crossover cable. Pinouts for the cables are described in "Connectors and Cable Specifications."The 10/100 switch ports can be explicitly set to operate in any combination of half duplex, full duplex, 10 Mbps, or 100 Mbps. These ports also can be set for speed and duplex autonegotiation, compliant with IEEE 802.3U. When set for autonegotiation, the port senses the speed and duplex settings of the attached device and advertises its own capabilities. If the connected device also supports autonegotiation, the switch port negotiates the best connection (that is, the fastest line speed that both devices support and full-duplex transmission if the attached device supports it) and configures itself accordingly.
The 10/100 ports on the Catalyst 2900 XL switches provide protocol support for Cisco IP Phones and per-port priority override. Refer to the Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide for more information about these features.
Cisco IP Phones—connected to the 10/100 port—must be connected to an AC power source. Unlike the 3524-PWR XL switch, the Catalyst 2900 XL switches do not provide inline power.
For more info on the Catalyst 3524-PWR XL switch, refer to the Catalyst 3500 Series XL Hardware Installation Guide.
100BASE-FX Ports
The 100BASE-FX ports use 50/125- or 62.5/125-micron multimode fiber-optic cabling. The connection distances between the switch and the attached device can be as follows:
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Long-Reach Ethernet Ports
The Long-Reach Ethernet (LRE) ports (Figure 1-4) use one RJ-21 connector to connect up to 24 Cisco LRE customer premises equipment (CPE) devices though structured or unstructured wiring, such as existing telephone lines. The link between the LRE switch port and each CPE device can reach speeds of up to 15 Mbps (full duplex) and distances of up to 4921 feet (1500 meters). You can connect Cisco 575 LRE CPE and Cisco 585 LRE CPE devices to LRE ports on the same Catalyst 2900 LRE XL switch, and you can hot swap the CPE devices without powering down the switch or disrupting the other switch ports.
The default mode for each LRE port is speed autonegotiation and half-duplex operation. For information about configuring the LRE ports, refer to the Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide.
For more information about the Cisco LRE CPE devices, refer to the Cisco LRE CPE Hardware Installation Guide.
If telephone services, such as voice or integrated services digital network (ISDN), use the same cabling as LRE traffic, the LRE port must be connected to the patch panel through a basic telephone service, also known as plain old telephone service (POTS) splitter. The splitter routes LRE data (high-frequency) and voice (low-frequency) traffic from the telephone line to the switch and private branch exchange (PBX) switch or Public-Switched Telephone Network (PSTN).
If the other telephone services are connected through a private branch exchange (PBX) switch, a Cisco LRE 48 POTS Splitter can be used. The PBX routes voice traffic to private telephone networks and the public system telephone network (PSTN). For more information about the Cisco LRE 48 POTS Splitter (PS-1M-LRE-48), refer to the Installation Notes for the Cisco LRE 48 POTS Splitter.
Note
If the installation does not have a PBX, a homologated POTS splitter is required to directly connect to the PSTN. For more information about homologated POTS splitters, contact your Cisco sales representative.
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Module Slots
The module slots (see Figure 1-2) are for the Catalyst 2900 XL hot-swappable modules. Each module port is internally switched to other switch ports and is managed through the switch management interfaces.
Table 1-1 lists the modules that the module slots support.
Table 1-1 Expansion Modules
10/100 Ethernet
WS-X2914-XL
WS-X2914-XL-V
WS-X2922-XL
100 BASE-FX
WS-X2922-XL-V
WS-X2924-XL-V
1000BASE-T
WS-X2932-XL
1 Ethernet Gigabit
WS-X2931-XL
ATM
WS-X2971-XL
WS-X2972-XL
WS-X2951-XL
WS-X2961-XL
1 The Ethernet Gigabit module supports several Gigabit Interface Converter (GBIC) devices. For a complete list and the minimum software release required, refer to the Release Notes for the Catalyst 2900 Series XL and Catalyst 3500 Series XL Switches.
These modules automatically configure themselves when you insert them in module slots and tighten the thumb screws. A power-on self-test (POST) verifies that the module is working properly before it starts forwarding packets.
Note
Refer to the Catalyst 2900 Series XL Modules Installation Guide and the Catalyst 2900 Series XL ATM Modules Installation and Configuration Guide for detailed information on expansion modules for Catalyst 2900 series XL switches.
LEDs
You can use the switch LEDs to monitor switch activity and its performance. Figure 1-5, Figure 1-6, and Figure 1-7 show the location of the LEDs and the Mode button that you use to select a port mode. Changing a port mode changes the information provided by each port LED.
All of the LEDs described in this section except the utilization meter (UTL) are visible on the Cluster Management Suite (CMS) window and, if the switch is a cluster member, on the CMS Cluster Manager window. The Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide describes how to use CMS to manage standalone or individual switches and how to use cluster management software to manage switch clusters].
Figure 1-5 Catalyst 2912 XL, 2924 XL, and 2924C XL LEDs
Figure 1-6 Catalyst 2912MF XL, 2924M XL, and 2924M XL DC LEDs
Figure 1-7 Catalyst 2912 LRE XL and 2924 LRE XL LEDs
System LED
The system LED shows whether the system is receiving power and functioning properly. Table 1-2 lists the LED colors and their meanings.
Table 1-2 System LED
Off
System is not powered up.
Green
System is operating normally.
Amber
System is receiving power but is not functioning properly.
For information on the System LED colors during POST, see the "Powering On the Switch and Running POST" section.
RPS LED
The Catalyst 2912 LRE XL and Catalyst 2924 LRE XL switches use the Cisco RPS 300 (model PWR300-AC-RPS-N1). All other Catalyst 2900 XL and Catalyst 3500 XL switches use the Cisco RPS 600 (model PWR600-AC-RPS). Refer to the appropriate switch documentation for redundant power system (RPS) descriptions specific for the switch. Table 1-2 and Table 1-3 list the RPS LED colors and their meanings.
Figure 1-8 RPS LED on the Catalyst 2912 XL, 2924C XL, 2924 XL, 2924MF XL, 2924M XL, and 2924M XL DC Switches
Off
RPS is off or is not installed.
Green
RPS is operational.
Blinking green
The RPS and the switch AC power supply are both powered up. If the switch power supply fails, the switch powers down and after 15 seconds restarts, using power from the RPS. The switch goes through its normal boot sequence when it restarts.
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Amber
RPS is connected but not functioning.
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Port LEDs and Modes
Each of the 10/100, 100BASE-FX, and LRE ports and module slots have a port LED. These port LEDs, as a group or individually, display information about the switch and about the individual ports. The port modes (Table 1-4 and Table 1-5) determine the type of information displayed.
To select or change a mode, press the Mode button until the desired mode is highlighted. When you change port modes, the meaning of the port LED colors also changes. Table 1-6 and Table 1-7 list the port LED colors.
Table 1-4 Port Mode LEDs on the Catalyst 2912 XL, 2924C XL, 2924 XL, 2924MF XL, 2924M XL, and 2924M XL DC Switches
STAT
Port status
The port status. This is the default mode.
UTL
Switch utilization
The current bandwidth in use by the switch. (See Figure 1-8.)
FDUP
Port duplex mode
The port duplex mode: full duplex or half duplex, and default modes:
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Port speed
The port operating speed: 10 or 100 Mbps.
Table 1-6 Meanings of Port Status LED Colors for Different Modes on Catalyst 2912 XL, 2924C XL, 2924 XL, 2924MF XL, 2924M XL, and 2924M XL DC Switches
STAT
(port status)Off
No link.
Solid green
Link present.
Flashing green
Activity. Port is transmitting or receiving data.
Alternating green-amber
Link fault. Error frames can affect connectivity, and errors such as excessive collisions, CRC errors, and alignment and jabber errors are monitored for a link-fault indication.
Solid amber
Port is not forwarding. Port was disabled by management or an address violation or was blocked by Spanning Tree Protocol (STP).
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UTL
(utilization)Green
The LEDs display backplane utilization on a logarithmic scale.
If all port LEDs are green, the switch is using 50 percent or more of its total bandwidth capacity. If the right-most LED is amber, the switch is using less than 50 percent of its total bandwidth. If the LED to the left of the right-most LED is amber, the switch is using less than 25 percent of its total capacity, and so on.
See Figure 1-8 for details.
FDUP
(port duplex)
Off
Port is operating in half duplex.
Green
Port is operating in full duplex.
100
(port speed)Off
Port is operating at 10 Mbps.
Green
Port is operating at 100 Mbps.
Table 1-7 Meanings of Port Status LEDs for Different Modes on Catalyst 2912 LRE XL and 2924 LRE XL Switches
LRE
Note
Cyan (off)
No LRE link present on the LRE port.
Green
LRE link present on the LRE port. Port LED turns green in approximately 10 seconds after the LRE port detects a connection to a LRE CPE.
Amber
LRE port on the switch and WALL port on the LRE CPE unable to establish the rate defined by the assigned profile.
STAT
Note
Cyan (off)
No LRE link present on the LRE port, or the port is administratively shut down.
Green
LRE link present on the LRE port. Port is in STP forwarding state.
Blinking green
Activity on the LRE port. Port is sending or receiving data.
Amber
LRE port is in a non-STP forwarding state or is administratively shut down.
Note
Blinking amber
Activity on the LRE port. Port is sending or receiving data, but it is not in STP forwarding state.
DUPLX
Cisco IOS Release 12.0(5.x)WC1/WC21
Cyan (off)
Cyan (off)
LRE port or remote CPE Ethernet port is operating in half-duplex mode.
Green
LRE port or remote CPE Ethernet port is operating in full-duplex mode.
SPEED
Cisco IOS Release 12.0(5.x)WC1/WC21
Cyan (off)
Cyan (off)
LRE port or remote CPE Ethernet port is operating at 10 Mbps.
Green
LRE port or remote CPE Ethernet port is operating at 100 Mbps.
1 The LEDs on Catalyst 2900 LRE XL switches with Cisco IOS Release 12.0(5.x)WC1 or Cisco IOS Release 12.0(5.x)WC2 provide information about the connected Cisco 575 LRE CPE devices. These IOS releases do not support the Cisco 585 LRE CPE devices.
2 The Catalyst 2900 LRE XL switches do not support Cisco IOS Release 12.0(5.x)WC3.
3 The LEDs on Catalyst 2900 LRE XL switches with Cisco IOS Release 12.0(5.x)WC4 or later do not provide information about any connected LRE CPE devices. To verify the LRE CPE Ethernet link status from a switch with this release or higher, use the Port Settings window or the show remote interfaces status user EXEC command.
Figure 1-9 shows bandwidth utilization percentages displayed by the right-most LEDs.
Figure 1-9 Bandwidth Utilization
Module Slot LEDs
Module slot LEDs (shown in Figure 1-6) show the status of installed modules. The LEDs are numbered 1 (left slot) and 2 (right slot). Table 1-8 lists LED colors and their meanings.
Table 1-8 Expansion Slot LEDs
Off
No module is installed.
Green
Module is operating normally.
Amber
Module failed POST and should be replaced.
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Rear-Panel Description
Other than the Catalyst 2924M XL DC switch, the rear panels of a Catalyst 2900 XL and Catalyst 2900 LRE XL switches have an AC power connector, an RPS connector, and an RJ-45 console port. (See Figure 1-10 through Figure 1-12.)
Figure 1-10 Catalyst 2912 XL, 2924 XL, and 2924C XL Rear Panel
Figure 1-11 Catalyst 2912 LRE XL, and 2924 LRE XL Rear Panel
Figure 1-12 Catalyst 2924M XL and 2912 MF XL Rear Panel
The rear panel of the Catalyst 2924M XL DC switch has a DC power connector (also referred to as the terminal block header), an RJ-45 console port, and a ground lug. (See Figure 1-13.) The switch is shipped with a terminal block plug in the DC power connector.
Figure 1-13 Catalyst 2924M XL Rear Panel
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Power Connectors
You can provide power to the switch either through the internal power supply or through the Cisco RPS.
Internal Power Supply Connector
The internal power supply is an autoranging unit that supports input voltages between 100 and 240 VAC. If you plan to use the internal power supply, use the supplied AC power cord to connect the AC power connector to an AC power outlet.
DC Power Connector
The Catalyst 2924M XL DC switch has an internal DC-power converter. It has dual feeds (A and B) that are diode-OR-ed into a single power block. For installation instructions, see the "Wiring the DC-Input Power Source" section.
Caution
Cisco RPS Connector
Specific Cisco RPS models support specific Catalyst 2900 XL switches:
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RPS Connector on the Catalyst 2912 XL, 2924C XL, 2924 XL, 2924MF XL, and 2924M XL Switches
The Cisco RPS 600 (model PWR600-AC-RPS) provides a quasi-redundant power source for four external devices that use up to 150W DC each. Use a one-to-one cable (one connector at each cable end) to connect four external devices to the four DC output power modules. The power source is quasi-redundant because there are two AC input power modules for the Cisco RPS and one DC output power module for each external device. The AC input to the Cisco RPS is fully redundant, but the DC output to the external devices is not.
Warning
Note
For more information on the Cisco RPS 600, refer to the Cisco Redundant Power System Hardware Installation Guide.
RPS Connector on the Catalyst 2912 LRE and 2924 LRE XL Switches
The RPS is a 300W redundant power system that can support six external network devices and provides power to one failed device at a time. It automatically senses when the power supply of a connected device fails and provides the necessary power to the failed device to prevent loss of network traffic. When the device internal power supply has been brought up or replaced, the RPS automatically stops powering the device.
Warning
Note
For more information on the Cisco RPS 300, refer to the Cisco Redundant Power System 300 Hardware Installation Guide.
Console Port
You can connect a switch to a PC through the switch console port and by using the supplied rollover cable and DB-9 adapter. You need to provide a RJ-45-to-DB-25 female DTE adapter to connect the switch console port to a terminal. You can order a kit (part number ACS-DSBUASYN=) containing that adapter from Cisco. For console port and adapter pinout information, see the "Connecting to the Console Port" section.
