® SPS service provider switches deliver cost-effective Metro Ethernet access solutions. These products are optimized for multitenant units (MTUs) and multidwelling units (MDUs) in which the service provider delivers triple-play (VoIP, video, and data) services to multiple businesses or homes in close proximity.
The Cisco SPS2024 24-Port 10/100/1000 Gigabit SP Switch (Figure 1) is ideal for environments in which security and uptime are important. It offers 24 Gigabit copper ports and 2 shared Small Form-Factor Pluggable (SFP) modules for optional optical interfaces for connecting to the core network.
The Cisco SPS switches facilitate the delivery of multiple services over a Layer 2 network with support for Q-in-Q stacking. This feature allows customer VLANs to be kept separate across the service provider backbone. Also, for efficient delivery of multicast traffic (such as video) to multiple customers, these switches provide support for a variation of Multicast VLAN Registration (MVR).
Network security is a primary concern for service providers, and the SPS switches deliver a number of advanced features that alleviate this concern. Support for dynamic Address Resolution Protocol (ARP) inspection eliminates the man-in-the-middle attack. IP Source Guard prevents a subscriber (or malicious user) from using an IP address not assigned to them. DHCP Guard keeps rogue devices from behaving like Dynamic Host Configuration Protocol (DHCP) servers. Spanning Tree Protocol (STP) Root Guard prevents a rogue spanning tree device from advertising that it should be the root bridge, thereby having the spanning tree network compromised by an outside device. Unauthorized access to the network is protected through 802.1X port and multisession authentication and MAC filtering/port security. The 802.1X standard requires clients to authenticate themselves before the port will pass data for them. An additional security feature is access control lists (ACLs), which restrict network use to certain users, groups, or applications. The SPS switches also secure management traffic, with support for Secure Shell (SSH) Protocol, SSL, and Simple Network Management Protocol (SNMP) v3.
The management capabilities of the SPS switches include support for DHCP option 82, allowing for assignment of IP addresses to subscribers based on where they connect to the network. Management can be performed through a GUI or command-line interface (CLI). The switches also support SNMP for management from a network management station.
• Twenty-four 10/100/1000 switched RJ-45 ports that deliver up to 2000 Mbps of throughput per port
• Two shared mini Gigabit Interface Converter (mini-GBIC) slots for fiber and copper Gigabit Ethernet expansion
Internet Group Management Protocol (IGMP) (versions 1 and 2) snooping provides for fast client joins and leaves of multicast streams and limits bandwidth-intensive video traffic to only the requestors. Supports 256 multicast groups.
4 hardware queues
Priority queuing and weighted round robin (WRR)
Class of service
• Port based
• 802.1p VLAN priority based
• IP ToS/DSCP based
Per flow QoS
• VLAN ID
• Ether type
• Source/destination MAC address
• IPv4/v6 IP precedence/ToS/DSCP based
• Source/destination IPv4 address
• TCP/UDP port based
• Classification and remarking DSCP
• Per flow ingress policer
• Per port ingress rate control and egress shaping
FCC Part 15 Class A, CE Class A, UL, cUL, CE Mark, CB
32° to 104°F (0° to 40°C)
-4° to 158°F (-20° to 70°C)
10% to 90%
10% to 95%
• One Cisco SPS2024 switch
• Power cord
• Two rack-mounting kits/eight screws
• One CD with user guide in PDF format
• One registration card
• Console cable
• Web-based utility: Microsoft Internet Explorer (version 5.5 or later) or Mozilla Firefox (version 188.8.131.52 or later)
• CAT5 Ethernet network cable
5-year limited hardware warranty with return to factory replacement and 90-day limited software warranty
Cisco Limited Warranty for Cisco Small Business Series Products
This Cisco Small Business product comes with a 5-year limited hardware warranty with return to factory replacement and a 90-day limited software warranty. In addition, Cisco offers software application updates for bug fixes and telephone technical support at no charge for the first 12 months following the date of purchase. To download software updates, go to: