Cisco SG-250 Series Switches

Performance

Switching capacity and forwarding rate

All switches are wire-speed and nonblocking

Model

Capacity in Millions of Packets per Second (mpps) (64-byte packets)

Switching Capacity in Gigabits per Second (Gbps)

SG250-10P

14.88

20.0

SG250-26

38.69

52.0

Layer 2 Switching

Spanning Tree Protocol (STP)

Standard 802.1d spanning tree support

Fast convergence using 802.1w (Rapid Spanning Tree Protocol [RSTP]), enabled by default

Multiple spanning tree instances using 802.1s (MSTP); 8 instances are supported

Port grouping/link aggregation

Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP)

VLAN

Support for up to 256 active VLANs simultaneously

Port-based and 802.1Q tag-based VLANs

Management VLAN

Voice VLAN

Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS. Auto voice capabilities deliver networkwide zero-touch deployment of voice endpoints and call control devices.

IGMP (versions 1, 2, and 3) snooping

Internet Group Management Protocol (IGMP) limits bandwidth-intensive multicast traffic to only the requesters; supports 4K multicast groups (source-specific multicasting is also supported).

HOL blocking

Head-of-line (HOL) blocking.

Product Specifications

802.3at PoE+ and 802.3af PoE delivered over any of the RJ-45 ports within the listed power budgets

The following switches support 802.3at PoE+, 802.3af, and Cisco prestandard (legacy) PoE. Maximum power of 30.0W to any 10/100 or Gigabit Ethernet port, until the PoE budget for the switch is reached. The total power available for PoE per switch is as follows:

Model

Power Dedicated to PoE

Number of Ports That Support PoE

SG250-10P

62W

8

SG250-26

195W

24

PoE powered device (PD) and PoE pass-through

Besides AC power, compact switch models can work as PoE powered device (PD) and be powered by PoE switches connected to the uplink ports. The switch can also pass through the power to downstream PoE end devices if required.

Maximum of 60W can be drawn per uplink port if the peer PoE switch supports 60W PoE. When multiple uplink ports are connected to PoE switches, the power drawn from these ports is combined.

When AC power is connected and functioning correctly, it is preferred over PoE power. The PoE power can function as a backup to the AC power source or be used as the sole power source for the switch.

Model

Power Option

Available PoE Power (W)

Can Switch Be Powered with Uplinks?

SG250-10P

1 PoE uplink

2 PoE uplink

1 PoE+ uplink

2 PoE+ uplink

1 60W PoE uplink

2 60W PoE uplink

AC Power

0W

0W

0W

22W

22W

50W

62W

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Ports

Model Name

Total System Ports

RJ-45 Ports

Combo Ports (RJ-45 + SFP)

SG250-10P

10 Gigabit Ethernet

8 Gigabit Ethernet

2 Gigabit Ethernet combo

SG250-26

26 Gigabit Ethernet

24 Gigabit Ethernet

2 Gigabit Ethernet combo

USB slot

USB Type-A slot on the front panel of the switch for easy file and image management

Buttons

Reset button

Cabling type

Unshielded twisted pair (UTP) Category 5 or better for 10BASE-T/100BASE-TX; UTP Category 5e or better for 1000BASE-T

LEDs

System, Link/Act, PoE, Speed

Flash

256 MB

CPU

800 MHz ARM

CPU memory

512 MB

100–240V 50–60 Hz, external – SG250-10P