- Modular Force10 Operating System (FTOS) software delivers inherent stability
- 24-port SFP fixed configuration 1-RU switch with up to four 10 GbE uplinks
- Scalable stacking technology supports 192 fiber 100M or GbE ports in up to eight S25Ps

S25P Overview
S-Series S25P High Performance GbE/10 GbE Access Switch
The Force10 S25P is a compact form factor switch that delivers high Gigabit Ethernet fiber density at the network edge, enabling cost-effective scalability while eliminating bandwidth bottlenecks at key aggregation points.
Key Applications
Coupled with the E-Series and C-Series, which deliver unmatched resiliency and performance, the S25P enables IT managers to deploy a reliable end-to-end 10 GbE solution that spans from core to network edge.
- Small form factor intra-POP Layer 2 interconnects
- Extend fiber reach in small to medium metro POPs
- 10 GbE LAN PHY or DWDM XFP media modules for cost-effective metro or inter-POP transport
- Scalable multi tenant unit (MTU) core or distribution switch
- Customer aggregation port with 100Base-FX or GbE speeds
Key Features
The S25P is a reliable and scalable fixed configuration fiber switch for high performance Ethernet environments.
- 24 SFP ports in a 1-RU form factor with two modular slots
- 20 ports GbE or 100Base-FX with SFP media modules
- 4 ports 10/100/1000Base-T shared with SFP ports
- Optional Modules
- 2-port 10 GbE LAN PHY (pluggable XFP modules)
- 2-port 10 GbE (CX4)
- 2-port 12 Gbps stacking
- 1-port 24 Gbps stacking
- Modular FTOS with advanced monitoring and serviceability functions
- Switching fabric capacity of 144 Gbps and forwarding capacity of more than 95 Mpps
- Stack up to eight S25N, S25P, S25V, S50N or S50V switches to deliver a scalable and flexible high capacity solution
- Supports jumbo frames of up to 9,252 bytes; ideal for high-end server connectivity and network attached file servers
- Full complement of standards-based Layer 2 and Layer 3 features
- Built-in power redundancy
S25P Specifications
Physical
- 24 line-rate ports supporting GbE or 100Base-FX SFPs
- 4-ports 10/100/1000Base-T (shared with SFP ports)
- 1 RJ45 console/management port with RS232 signaling
- Optional Modules:
- 2 line-rate ports 10 Gigabit Ethernet XFP
- 2 line-rate ports 10 Gigabit Ethernet CX4
- 2 line-rate ports 12 Gigabit Stacking
- 1 line-rate port 24 Gigabit Stacking
- Size:
1 RU, 1.7 h x 17.32 w x 16.73" d (4.3 h x 44 w x 42.5 cm d)
- Weight: 14.43 lbs (6.56 kg)
- Power supply:
- 100-240 VAC 50/60 Hz
- -44 to -60 VDC
- Max. thermal output:
- S25P (AC): 305 BTU/h
- S25P (DC): 262 BTU/h
- Max. current draw per system:
- 2 A at 100/120 VAC
- 1 A at 200/240 VAC, 3.6 A at -48 VDC
- Max. power consumption:
- S25P (AC): 90 W
- S25P (DC): 77 W
- Max. operating specifications:
- Operating temperature: 32° to 122°F
(0° to 50°C)
- Operating humidity: 10 to 85% (RH), non-condensing
- Max. non-operating specifications:
- Storage temperature:
–40° to 158°F (–40 to 70°C)
- Storage humidity:
5 to 95% (RH), non-condensing
- Reliability:
- S25P (AC): MTBF 164,358 hours
- S25P (DC): MTBF 164,358 hours
Redundancy
- Ring stacking topology with dynamic master election
- Dual modular slots with up to four 10 GbE ports
- Link aggregation across stack members
- Built-in power redundancy
Performance
- Layer 2 MAC addresses: 16K
- Layer 3 forwarding entries: 4K
- Switching fabric capacity:
144 Gbps
- User traffic capacity: 128 Gbps (95 Mpps)
- Link aggregation: 8 links per group, 128 groups per stack
- Stacking capacity: up to 96 Gbps per stack member
- Queues per port: 4 queues
- VLANs: 1024 VLANs with 4096 tag value support
- Line-rate Layer 2 switching: all protocols, including
IPv4 and IPv6
- Line-rate Layer 3 routing: IPv4
- LAG load balancing: based on Layer 2, IPv4 or IPv6 headers
- Switching latency: <5 μs for 64 byte frames
IEEE Compliance
- 802.1AB Link Layer Discovery Protocol
- 802.1D Bridging, STP
- 802.1p L2 Prioritization
- 802.1Q VLAN Tagging, Double VLAN Tagging, GVRP
- 802.1s Multiple Spanning Tree Protocol
- 802.1w Rapid Spanning Tree Protocol
- 802.1X Network Access Control
- 802.3ab Gigabit Ethernet (1000BASE-T)
- 802.3ac Frame Extensions for VLAN Tagging
- 802.3ad Link Aggregation with LACP
- 802.3ae 10 Gigabit Ethernet
- 802.3ak 10 Gigabit Ethernet (10GBASE-CX4)
- 802.3i Ethernet (10BASE-T)
- 802.3u Fast Ethernet
(100BASE-TX, 100BASE-FX)
- 802.3z Gigabit Ethernet (1000BASE-X)
- Cisco Per-VLAN Spanning Tree+
- MTU 9,252 bytes
RFC and I-D Compliance
General Internet Protocols
- 768 UDP
- 793 TCP
- 854 Telnet
- 959 FTP
- 1321 MD5
- 1350 TFTP
- 2474 Differentiated Services
General IPv4 Protocols
- 791 IPv4
- 792 ICMP
- 826 ARP
- 1027 Proxy ARP
- 1035 DNS (client)
- 1042 Ethernet Transmission
- 1191 Path MTU Discovery
- 1305 NTPv3
- 1519 CIDR
- 1542 BOOTP (relay)
- 1812 Routers
- 2131 DHCP (relay)
- 2338 VRRP
- 3021 31-bit Prefixes
RFC and I-D Compliance (con't)
OSPF
- 2154 MD5
- 1587 NSSA
- 2328 OSPFv2
- 2370 Opaque LSA
- Graceful Restart (helper mode)
- 4222 Prioritization and Congestion Avoidance
Multicast
Network Management
- 1155 SMIv1
- 1156 Internet MIB
- 1157 SNMPv1
- 1212 Concise MIB Definitions
- 1215 SNMP Traps
- 1493 Bridges MIB
- 1850 OSPFv2 MIB
- 1901 Community-based SNMPv2
- 2011 IP MIB
- 2012 TCP MIB
- 2013 UDP MIB
- 2024 DLSw MIB
- 2096 IP Forwarding Table MIB
- 2570 SNMPv3
- 2571 Mangement Frameworks
- 2572 Message Processing and Dispatching
- 2574 SNMPv3 USM
- 2575 SNMPv3 VACM
- 2576 Coexistence Between SNMPv1/v2/v3
- 2578 SMIv2
- 2579 Textual Conventions for SMIv2
- 2580 Conformance Statements for SMIv2
- 2618 RADIUS Authentication MIB
- 2665 Ethernet-like Interfaces MIB
- 2674 Extended Bridge MIB
- 2787 VRRP MIB
- 2819 RMON MIB
(groups 1, 2, 3, 9)
- 2863 Interfaces MIB
- 2865 RADIUS
- 3176 sFlow
- 3273 RMON High Capacity MIB
- 3416 SNMPv2
- 3418 SNMP MIB
- 3434 RMON High Capacity Alarm MIB
- 3580 802.1X with RADIUS
- ANSI/TIA-1057 LLDP MED MIB
- draft-grant-tacacs-02 TACACS+
- IEEE 802.1AB LLDP MIB
- IEEE 802.1AB LLDP DOT1 MIB
- IEEE 802.1AB LLDP DOT3 MIB
- ruzin-mstp-mib-02 MSTP MIB (traps)
- FORCE10-IF-EXTENSION-MIB
- FORCE10-LINKAGG-MIB
- FORCE10-COPY-CONFIG-MIB
- FORCE10-MON-MIB
- FORCE10-PRODUCTS-MIB
- FORCE10-SS-CHASSIS-MIB
- FORCE10-SMI
- FORCE10-SYSTEM-COMPONENT-MIB
- FORCE10-TC-MIB
- FORCE10-TRAP-ALARM-MIB
Regulatory Compliance
Safety
- UL/CSA 60950-1, 1st Edition
- EN 60950-1, 1st Edition
- IEC 60950-1, 1st Edition Including all National Deviations and Group Differences
- EN 60825-1 Safety of Laser Products Part 1:
- Equipment Classification Requirements and User's Guide
- EN 60825-2 Safety of Laser Products Part 2:
- Safety of Optical Fibre Communication Systems
- FDA Regulation 21 CFR 1040.10 and 1040.11
Emissions
- Australia/New Zealand: AS/NZS CISPR 22: 2006, Class A
- Canada: ICES-003, Issue-4, Class A
- Europe: EN 55022: 2006
(CISPR 22: 2006), Class A
- Japan: VCCI V3/2007.04 Class A
- USA: FCC CFR 47 Part 15, Subpart B, Class A
Immunity
- EN 300 386 V1.3.3: 2005 EMC for Network Equipment
- EN 55024: 1998 + A1: 2001 + A2: 2003
- EN 61000-3-2: Harmonic Current Emissions
- EN 61000-3-3:Voltage Fluctuations and Flicker
- EN 61000-4-2: ESD
- EN 61000-4-3: Radiated Immunity
- EN 61000-4-4: EFT
- EN 61000-4-5: Surge
- EN 61000-4-6: Low Frequency Conducted Immunity
RoHS
All S-Series components are EU RoHS compliant.
The features and specifications are for FTOS. For SFTOS features and specifications, please refer to the SFTOS data sheet.
Ordering Information
- S25-01-GE-24P
- 24-port 100Base-FX/GbE SFP chassis with four 10/100/1000Base-T ports, two modular slots and two AC power supplies
- S25-01-GE-24P-DC
- 24-port 100Base-FX/GbE SFP chassis with four 10/100/1000Base-T ports, two modular slots and two DC power supplies
- S50-01-10GE-2P
- 2-port 10 GbE XFP module
- S50-01-10GE-2C
- 2-port 10 GbE CX4 module
- S50-01-12G-2S
- 2-port 12 Gbps stacking module
- S50-01-24G-1S
- 1-port 24 Gbps stacking module
- S50-01-SSC-12G
- 60 cm stacking cable for S50-01-12G-2S
- S50-01-LSC-12G
- 4 m stacking cable for S50-01-12G-2S
- S50-01-SSC-24G
- 60 cm stacking cable for S50-01-24G-1S
- S50-01-LSC-24G
- 4 m stacking cable for S50-01-24G-1S
- SW-SB-LATEST
- Layer 3 software upgrade
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