OVERVIEW
Catalyst
2900 Series XL
The Cisco Catalyst® 2900 Series XL is a full line
of 10/100 autosensing Fast Ethernet switches
from the leader in networking that combines
outstanding performance, ease of use, and
integrated Cisco IOS® software. The Catalyst 2900
Series XL includes six models, each with different
port densities, configuration options, and pricing
to meet a broad range of network design
requirements.
The 24-port Catalyst 2924M XL switch is an
excellent aggregation device, as well as the perfect
solution for providing dedicated 10- or 100-Mbps
bandwidth to individual users. The 12-port
Catalyst 2912MF XL switch is ideal for
aggregating small and mid-sized campus
networks over 100BaseFX fiber connections. The
two versatile module slots of the Catalyst
2912MF XL and Catalyst 2924M XL provide
expansion capabilities, higher-speed connectivity,
and support for feature modules, allowing you the
flexibility to upgrade your network and preserve
your initial investment. The 12-port Catalyst
2912 XL, 24-port Catalyst 2924 XL and Catalyst
2924C XL switches are ideal for delivering
low-cost, high-performance, and 10- or 100-Mbps
bandwidth to individual users and servers. A
special version of the Catalyst 2900 Series XL, the
Catalyst 2924M DC for central office networks, is
designed especially for Telcos and other service
providers that require 48-volt DC Power.
Flexible Stacking with the
GigaStack GBIC
Gigabit Ethernet-enabled Catalyst 2900 Series XL
switches and Catalyst 3500 Series XL and can be
stacked using the low-cost two-port Cisco
GigaStack GBIC, which offers a range of highly
flexible stacking and performance options.
Customers can deploy a 1-Gbps independent stack
backplane in a cascade configuration, or scale up
to 5-Gbps of bandwidth in a star configuration
using the Catalyst 3508G Gigabit Ethernet
aggregation switch. Network managers may use
one or both of the available GBIC ports on a
Gigabit Ethernet-enabled Catalyst 2900 Series XL
switch to create high-speed uplinks to the network
core, using standard Gigabit Ethernet or Gigabit
EtherChannel technology. High resiliency can also
be implemented by deploying dual Gigabit
Ethernet uplinks, a redundant GigaStack loopback
cable, Cisco Uplink Fast technology for high-speed
uplink failover, and PVST+ (Per VLAN Spanning
Tree) for uplink load balancing.
Cisco Switch Clustering
Breakthrough Cisco Switch Clustering technology
enables up to 16 interconnected Catalyst 3500 XL,
2900 XL, and Catalyst 1900 switches, regardless
of geographic proximity, to form a single IP
management domain. Switch Clustering supports
a broad range of standards-based connectivity
options and configurations to deliver levels of
performance that are scalable to meet customer
requirements. Switch Clustering connectivity
options for the Catalyst 2900 Series XL include
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Ethernet, Fast Ethernet, Fast EtherChannel ports, low-cost
Cisco GigaStack GBIC, Gigabit Ethernet, and Gigabit
EtherChannel ports. Because the technology is not limited
by proprietary stacking modules and stacking cables,
Cisco Switch Clustering expands the traditional stacking
domain beyond a single wiring closet and lets users mix
and match interconnections to meet specific management,
performance, and cost requirements.
A command switch, either a Catalyst 2900 XL or 3500
XL, provides the proxy and redirection services for single
IP address management for each cluster. All cluster
management commands are targeted to the command
switch IP address. For redundancy, a second switch can be
assigned an IP address, and the overall cluster can then be
managed using a single virtual IP address. If the primary
command switch fails, the backup or secondary command
switch seamlessly takes over the management of the
cluster while a user still accesses the cluster via the virtual
IP address.
Cisco Switch Clustering can be accessed via Cisco Cluster
Management Suite (CMS), a Web-based management
interface, which allows network administrators to
configure, monitor, and manage a switch from anywhere
on the network through a standard browser such as
Microsoft Internet Explorer or Netscape Navigator.
Network administrators simply point their Web-browsers
to the IP address of the cluster Command switch and
access all management capabilities. The CMS interface is
launched from the switch itself and delivers simple,
cluster-wide, device-level management, including port
configuration, VLAN setup, network views, and port
monitoring—all from a single graphical interface.
Web-based management is an integral part of the Cisco
Switch Clustering architecture, allowing users to easily
configure and manage stacks and switch clusters, and
administer software upgrades across multiple switches.
Command switch and cluster management redundancy
are ensured via an automatic failover scheme in the rare
event of a command switch failure.
Applications
High-Performance Desktop Connectivity
(10/100 to the Desktop)
The Catalyst 2912 XL, Catalyst 2924 XL, Catalyst
2924C XL, and Catalyst 2924M XL can all be deployed
as high-performance solutions to provide 10/100
bandwidth directly to the desktop. The Catalyst 2912 XL
and Catalyst 2924 XL offer the lowest price per port in a
fixed configuration. The Catalyst 2924C XL contains
two 100BaseFX ports for networks that need to deploy
high-performance 100-Mbps desktop connectivity over
an extended distance (up to 2 kilometers) with fiber-optic
cabling. The Catalyst 2924M XL switch accepts
10Base-T/100BaseTX, 100Base FX Gigabit Ethernet, or
Asynchronous Transfer Mode (ATM) (OC-3) modules to
increase port density and provide fiber connectivity over
extended distances. All Catalyst 2900 XL products
support the aggregation of multiple ports via Fast
EtherChannel® or Gigabit EtherChannel to provide
redundant, high bandwidth connections between
switches, servers, and other key network stations using
Fast Ethernet or Gigabit Ethernet links.
Figure 1
The Catalyst 2912 XL, Catalyst 2924 XL, Catalyst
2924C XL and Catalyst 2924M XL for High-Performance
Desktop Connectivity
Catalyst 8500, 5500,
and 4000 Series
Enterprise Switches
Catalyst
2924C XL
Switch
10/100 Workstations
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Fast EtherChannel
Technology
Enterprise Workgroup and Server Aggregation
The Catalyst 2924M XL will be deployed in wiring closets
to aggregate workgroup networking devices such as Fast
Ethernet hubs, Ethernet hubs and switches, and workgroup
servers. EtherChannel technology allows customers to
logically “bond” multiple Fast Ethernet or Gigabit Ethernet
links, creating a high-capacity uplink to the corporate or
campus backbone.
Figure 2
The Catalyst 2924M XL for Enterprise Workgroup Aggregation
Catalyst 8500, 5500,
and 4000 Series
Enterprise Switches
Fast EtherChannel
Catalyst
2924M XL
Switch
Fast EtherChannel
or 100BaseTX
Local Servers
10BaseT Hub
FastHub Series
10/100 Hubs
Catalyst 1900/2820
Series Ethernet Switch
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Catalyst 2900 XL
10/100 Switch
Disbursed Midsized Campus Aggregation
The 12-port Catalyst 2912MF XL is ideal for aggregating
geographically disbursed Fast Ethernet workgroups over
100Base-FX fiber connections on a small or midsized
campus environment. Two high-speed uplink slots
enable users to add additional 100Base-FX,
10Base-T/100Base-T, Gigabit Ethernet, or ATM ports.
Figure 3
The Catalyst 2912MF XL for Disbursed Small Campus Aggregation
Catalyst 8500 or 5500,
Enterprise Switch
Fast EtherChannel
Fiber Fast EtherChannel
or 100BaseFX Gigabit Ethernet
or ATM Connections
Catalyst
2912MF XL
Switch
Catalyst 2900 XL
10/100 Switch
FastHub Series
10/100 Hub
Catalyst 1900
Ethernet Switch
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Workgroup and Server Aggregation for
Small to Medium-Sized Networks
The 24-port Catalyst 2924M XL may be used as a
flexible, scalable, network backbone for a small to
medium-sized business (SMB). The switch is an effective
solution for aggregating network resources and delivering
dedicated 10- or 100-Mbps connectivity to individual
users and workgroups in an SMB. Two high-speed uplink
slots enable users to add additional 100Base-FX, or
10Base-T/100Base-T, Gigabit Ethernet or ATM ports.
Figure 4
The Catalyst 2924M XL as SMB Aggregator and Backbone
Catalyst
2924M XL
Switch
Fast EtherChannel,
100BaseTX, 100BaseFX
or Gigabit Ethernet Connections
10/100/1000 Servers and
Workstations
10BaseT Hub
FastHub Series
10/100 Hubs
Catalyst 1900/2820
Series Ethernet Switch
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Catalyst 2900 XL
10/100 Switch
Table 1 Features and Benefits Summary
Feature
Description
Benefit
10Base-T/100Base-TX
Support
12, 22, and 24 autosensing switched
10BaseT/100Base-TX ports
Delivers performance where required, such as server
farms, power workgroups, and individual users
Preserves investment in legacy 10BaseT equipment, such
as NIC cards, hubs, and switches
Four-port 10Base-T/100Base-TX switch module
(Catalyst 2912MF XL and 2924M XL only)
Provides a cost-effective means to increase the port
density of the Catalyst 2912MF XL and 2924M XL
Two switched 100Base-FX ports (Catalyst 2924C
XL only) and 12 switched 100Base-FX ports
(Catalyst 2912MF XL only)
Delivers high-speed connectivity between Catalyst
2912MF XL, Catalyst 2924C XL, and another device over
an extended distance of up to 2 kilometers
2-port and 4-port 100Base-FX switch modules
Cost-effective means to deliver connectivity between a
Catalyst 2912MF XL or 924M XL and another device over
an extended distance of up to 2 kilometers
IEEE 802.1p combined with two priority queues
on 10/100 ports
Provides quality-of-service and ability to prioritize
mission critical and time sensitive traffic from data,
voice, and telephony applications
Trusted extension settings
Allows the switch to set trusted port settings for the PC
port on Cisco IP phones, ensuring voice traffic receives
highest priority
Versatile Module Slots
(Catalyst 2912MF XL
and 2924 M XL)
Two versatile module slots accommodate
future network expansion plans
Provides a flexible means to enhance the base switch
offering without the need for a forklift upgrade
Virtual LANs on
all Ports
Up to 64 port-based VLANs per Catalyst 2900
XL switch enable groups of devices on a LAN to
communicate as if they are on the same wire,
even if they are on different LAN segments
Improve performance and scalability by evaluating
network traffic patterns and assigning users to VLANs
associated with appropriate network resources and
bandwidth
100Base-FX Support
QoS
Reduce administrative costs and simplify network
moves, adds, and changes
Enable better management and control of broadcast and
multicast traffic
Improve network security by establishing separate VLAN
groups for high-security users and relocating workgroup
servers into secured, centralized areas
Support for standards-based IEEE 802.1Q and
Cisco ISL VLAN trunking protocols
Enables deployment of up to 64 enterprise-wide VLAN
trunks per Catalyst 2900 XL switch, spanning multiple
routers, chassis switches, and access servers
Autosensing on Each
10/100 Port
Detects the speed of the attached device and
automatically configures the port for 10 or 100
Mbps
Eases deployment of the switch in mixed 10Base-T and
100Base-T environments
Autonegotiating on
Each 10/100 Port
Automatically selects half- or full-duplex
transmission mode
Optimizes bandwidth utilization
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Table 1 Features and Benefits Summary (Continued)
Feature
Description
Benefit
Outstanding
Performance
3.2-Gbps switching fabric and 3.0 million
packets-per-second forwarding rate
Meets the demands of the most intensive network
applications
Ensures full wire-speed operation for each
10Base-T/100Base-TX port
Full-duplex operation on switched
100BaseT ports
Delivers up to 200 Mbps of bandwidth to end stations
and servers, and between switches
4-MB shared memory architecture
Ensures highest possible throughput by eliminating
head-of-line blocking, minimizing packet loss, and
reducing congestion from multicast and broadcast traffic
Bandwidth aggregation through Fast
EtherChannel or Gigabit EtherChannel or
Gigabit EtherChannel technology
Delivers up to 800-Mbps or 4-Gbps connectivity between
switches, and to routers and individual servers
Enhances fault tolerance
Flexible Stacking
and Scalable Switch
Clustering Technology
Per-port broadcast storm control
Prevents faulty end stations from degrading overall
system performance with broadcast storms
Cisco Group Management Protocol (CGMP)
Enables the switch to selectively forward routed IP
multicast traffic to targeted multimedia end stations,
reducing overall network traffic
CGMP Fast Leave
Allows quick stoppage of multicasts to end stations that
want to drop a data stream, reducing superfluous traffic
on the network
Traffic storm controls
Limits broadcasts, multicasts and unicasts on a per port
basis when set thresholds are exceeded
Hardware-based independent stacking bus
delivered through GigaStack GBIC supports
multiple stacking options
Delivers up to 1-Gbps forwarding bandwidth to a
cascade of up to nine Catalyst 3500 Series XL and
gigabit-enabled Catalyst 2900 Series switches or 2-Gbps
forwarding bandwidth in a point-to-point configuration
Cisco Switch Clustering technology
Delivers flexibility, scalability, and ease of management
with a broad range of connectivity options to up to 16
interconnected Catalyst 3500 XL, 2900 XL, and 1900
switches managed from a single IP address
Cluster wide software administration
Allows a network administrator to quickly and easily
upgrade system software for up to 16 interconnected
Catalyst 3500 XL, 2900 XL, and 1900 switches through a
single CLI command or an easy-to-use CMS Web-based
interface
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Table 1 Features and Benefits Summary (Continued)
Feature
Description
Benefit
Management and
System Setup
Simple Network Management Protocol (SNMP)
and Telnet interface support
Delivers comprehensive in-band management
Telnet support for five simultaneous sessions
Allows menu-based management by terminal emulation
software over the network
Command-line interface (CLI)-based
management console
Provides detailed out-of-band management
Uses the same management interface as Cisco routers
Cisco Cluster Management Suite (CMS)
Built-in HTTP server enables Web-based management
interface through standard browser such as Netscape
Navigator or Microsoft Explorer
Provides stack and network topology views of a group of
Catalyst 3500 XL, 2900 XL, and 1900 switches with one
easy-to-use management interface
Support for CiscoWorks2000 network
management software
Provides a common management interface for Cisco
routers, switches, and hubs
Cisco Discovery Protocol (CDP)
Enables a CiscoView network management station to
automatically discover the switch in a network topology
without user intervention
Four groups of embedded RMON (history,
statistics, alarms, and events)
Provides enhanced manageability, network monitoring,
and traffic analysis
Network statistics gathered on a per-port basis
or by using an RMON probe
Facilitates troubleshooting and capacity planning by
characterizing each port’s utilization, errors, and other
key statistics
SPAN support for connection to a network
analyzer or RMON probe
Offers complete monitoring of a single port, group of
ports, or the entire switch from a single network analyzer
or RMON probe attached to a switch port
Multifunction per-port LEDs for port status,
half-duplex/full-duplex, and
10Base-T/100Base-T indication, as well as
switch-level status LEDs for system, RPS,
module status, and bandwidth utilization
Provides comprehensive and convenient visual
management of the switch
Autoconfiguration
Eases deployment of switches in the network by
automatically configuring multiple switches across a
network via a boot server
Trivial File Transfer Protocol (TFTP)
Reduces the cost of administering software upgrades by
downloading from a centralized location
Default configuration stored in Flash memory
Ensures that the switch can be connected to the network
and can pass traffic with minimal user intervention
Address Resolution Protocol (ARP) discovers
the MAC address that corresponds to the IP
address for any given host on the network
Allows the network manager, from a central console, to
identify a host IP address and its corresponding MAC
address
Domain Name Services (DNS)
Provides IP address resolution with user-defined device
names
Network Time Protocol (NTP)
Provides an accurate and consistent timestamp to all
switches within the intranet
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Table 1 Features and Benefits Summary (Continued)
Feature
Description
Benefit
Management and
System Setup
(continued)
Spanning Tree Root Guard (STRG)
Prevents devices not in the network administrator's or
service provider's control from becoming STP root nodes
by configuring STRG on device ports it does control.
VTP Pruning
Limits broadcasts on VTP trunks. When VTP pruning is
enabled, broadcast traffic is flooded only on trunk links
required to reach the destination devices.
19-inch rack-mountable Catalyst 2912 XL, 2924
XL, and 2924C XL are available in one
rack-unit-high (1.73 in.) enclosure. Catalyst
2912MF XL and 2924M XL are available in
two rack-unit-high enclosures (3.46 in.)
Compliant with standard 19-inch rack-mount scheme for
easy installation; allows high-density port allocation
while conserving valuable rack space in the wiring closet
IEEE 802.1d Spanning-Tree Protocol
Supports redundant backbone connections and loop-free
networks for improved fault tolerance
Cisco Uplink Fast technology
Ensures quick failover recovery, enhancing overall
network stability and reliability
Cross-stack Uplink Fast
Provides increased redundancy and network resiliency
through fast spanning-tree convergence (less than 2
seconds) across a stack of switches using GigaStack
GBICs
Redundant stacking connections
Support for a redundant loopback connection in top and
bottom switches in a stack
Command Switch Redundancy
Allows customers to designate a backup command
switch, which takes over cluster management functions
in the event of a failure of the primary command switch.
Unidirectional Link Detection (UDLD)
Detects and disables unidirectional links caused by
incorrect wiring or interface faults, preventing Spanning
Tree loops
Cisco 600-watt redundant AC power system
option
External RPS provides a redundant power source for up
to four units for improved fault tolerance
MTBF exceeds 164,000 hours
Designed to provide the highest reliability for maximum
network uptime
Mac-based port level security
Secures a port to an individual MAC address group of up
to 132 MAC addresses; addresses can be learned or
manually entered; can prevent unauthorized stations
from accessing the switch
Password-protected in-band and out-of-band
management
Provides protection against unauthorized configuration
changes and secures against unwanted intruders
Fault Tolerance
Security
Provides administrators the choice of level of security,
notification, and resulting actions
Warranty
TACACS+ authentication
Enables centralized control of the switch and restricts
unauthorized users from altering the configuration
Private VLAN Edge
Provides security and isolation between ports on a
switch, ensuring that voice traffic travels directly from its
entry point to the aggregation device through a virtual
path and cannot be directed to a different port
Limited Lifetime Warranty
Backed by Cisco's service and support and the
technology leadership that extends the reach of networks
worldwide
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Table 2 Availability and Orderability
Model
Base Units
WS-C2912-XL-EN
12-port 10BASE-T/100BASE-TX autosensing Fast Ethernet switch
WS-C2924-XL-EN
24-port 10BASE-T/100BASE-TX autosensing Fast Ethernet switch
WS-C2924C-XL-EN
24-port switch with 22 10BASE-T/100BASE-TX autosensing Fast Ethernet ports and two
100BASE-FX ports
WS-C2912MF-XL
12-port 100BASE-FX Fast Ethernet switch with two expansion slots
WS-C2924M-XL-EN
24-port 10BASE-T/100BASE-TX autosensing Fast Ethernet switch with two expansion slots
WS-C2924M-XL-EN-DC
24-port 10BASE-T/100BASE-TX autosensing Fast Ethernet DC-powered switch with two expansion slots
Modules and GBICs
WS-X2931-XL
1000BaseX Module (without GBIC)
WS-X2932-XL
1000BaseT Module (without GBIC)
WS-X3500-XL
GigaStack Stacking GBIC and 50cm cable (for the Catalyst 2900 Series XL and 3500 Series XL)
WS-G5484=
1000BASE-SX “Short Wavelength” GBIC (multimode only)
WS-G5486=
1000BASE-LX/LH “Long Haul” GBIC (singlemode or multimode)
WS-X2951-XL
ATM 155 UTP Module
WS-X2961-XL
ATM 155 Multimode Fiber Module
WS-X2971-XL
ATM 155 Single Mode (medium) Module
WS-X2972-XL
ATM 155 Single Mode (long) Module
Corporate Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
www.cisco.com
Tel: 408 526-4000
800 553-NETS (6387)
Fax: 408 526-4100
European Headquarters
Cisco Systems Europe
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92782 Issy-les-Moulineaux
Cedex 9
France
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Tel: 33 1 58 04 60 00
Fax: 33 1 58 04 61 00
Americas Headquarters
Cisco Systems, Inc.
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San Jose, CA 95134-1706
USA
www.cisco.com
Tel: 408 526-7660
Fax: 408 527-0883
Asia Pacific Headquarters
Cisco Systems Australia, Pty., Ltd
Level 9, 80 Pacific Highway
P.O. Box 469
North Sydney
NSW 2060 Australia
www.cisco.com
Tel: +61 2 8448 7100
Fax: +61 2 9957 4350
Cisco Systems has more than 200 offices in the following countries and regions. Addresses, phone numbers, and fax numbers are listed on the
Cisco.com Web site at www.cisco.com/go/offices.
Argentina • Australia • Austria • Belgium • Brazil • Bulgaria • Canada • Chile • China PRC • Colombia • Costa Rica • Croatia
Republic
Denmark • Dubai, UAE • Finland • France • Germany • Greece • Hong Kong SAR • Hungary • India • Indonesia • Ireland
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Puerto Rico • Romania • Russia • Saudi Arabia • Scotland • Singapore • Slovakia • Slovenia • South Africa • Spain •
• Czech
• Israel
Portugal
Sweden
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certain other countries. All other brands, names, or trademarks mentioned in this document or Web site are the property of their respective owners. The use of the word partner does not imply a partnership
relationship between Cisco and any other company (0012R)
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