Cisco CBS250-8P-E-2G Manageable Layer 2 web switch 8 ports PoE 10/100/1000 Mbps 2 ports combo 1 GbE/SFP

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)

CBS250-8T-D

11.90

16.0

CBS250-8PP-D

11.90

16.0

CBS250-8T-E-2G

14.88

20.0

CBS250-8PP-E-2G

14.88

20.0

CBS250-8P-E-2G

14.88

20.0

CBS250-8FP-E-2G

14.88

20.0

CBS250-16T-2G

26.78

36.0

CBS250-16P-2G

26.78

36.0

CBS250-24T-4G

41.66

56.0

CBS250-24PP-4G

41.66

56.0

CBS250-24P-4G

41.66

56.0

CBS250-24FP-4G

41.66

56.0

CBS250-48T-4G

77.38

104.0

CBS250-48PP-4G

77.38

104.0

CBS250-48P-4G

77.38

104.0

CBS250-24T-4X

95.23

128.0

CBS250-24P-4X

95.23

128.0

CBS250-24FP-4X

95.23

128.0

CBS250-48T-4X

130.94

176.0

CBS250-48P-4X

130.94

176.0

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

Per-VLAN Spanning Tree Plus (PVST+); 126 instances are supported

Rapid PVST+ (RPVST+); 126 instances are supported

Port grouping/link aggregation

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

VLAN

Support for up to 255 active VLANs simultaneously

Port-based and 802.1Q tag-based VLANs

Management VLAN

Guest VLAN

Voice VLAN

Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS. Voice Services Discovery Protocol (VSDP) delivers networkwide zero-touch deployment of voice endpoints and call control devices

Generic VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP)

Protocols for automatically propagating and configuring VLANs in a bridged domain

IGMP (versions 1, 2, and 3) snooping

Internet Group Management Protocol (IGMP) limits bandwidth-intensive multicast traffic to only the requesters; supports 255 multicast groups (source-specific multicasting is also supported)

IGMP querier

Used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router

HOL blocking

Head-of-Line (HOL) blocking prevention

Loopback detection

Provides protection against loops by transmitting loop protocol packets out of ports on which loop protection has been enabled. It operates independently of STP.

Layer 3 routing

IPv4 routing

Wire-speed routing of IPv4 packets

Up to 32 static routes and up to 16 IP interfaces

IPv6 routing

Wire-speed routing of IPv6 packets

Layer 3 interface

Configuration of Layer 3 interface on physical port, LAG, VLAN interface, or loopback interface

Classless Interdomain Routing (CIDR)

Support for CIDR

Dynamic Host Configuration Protocol (DHCP) relay at Layer 3

Relay of DHCP traffic across IP domains

User Datagram Protocol (UDP) relay

Relay of broadcast information across Layer 3 domains for application discovery or relaying of Bootstrap Protocol (BootP)/DHCP packets

Security

Secure Sockets Layer (SSL)

SSL encrypts all HTTPS traffic, allowing secure access to the browser-based management GUI in the switch

Secure Shell (SSH) Protocol

SSH is a secure replacement for Telnet traffic. Secure Copy (SCP) also uses SSH. SSH v1 and v2 are supported.

IEEE 802.1X (authenticator role)

Remote Authentication Dial-In User Service (RADIUS) authentication, guest VLAN, single/multiple host mode, and single/multiple sessions

STP loopback guard

Provides additional protection against Layer 2 forwarding loops (STP loops)

Secure Core Technology (SCT)

Ensures that the switch will receive and process management and protocol traffic no matter how much traffic is received

Secure Sensitive Data (SSD)

A mechanism to manage sensitive data (such as passwords, keys, and so on) securely on the switch, populating this data to other devices, and secure autoconfig. Access to view the sensitive data as plain text or encrypted is provided according to the user-configured access level and the access method of the user

Trustworthy systems

Trustworthy systems provide a highly secure foundation for Cisco products

Run-time defenses (Executable Space Protection [X-Space], Address Space Layout Randomization [ASLR], Built-In Object Size Checking [BOSC])

Port security

Ability to lock source MAC addresses to ports and limit the number of learned MAC addresses

RADIUS

Supports RADIUS authentication for management access. Switch functions as a client.

Storm control

Broadcast, multicast, and unknown unicast

DoS prevention

Denial-of-Service (DoS) attack prevention

Multiple user privilege levels in CLI

Level 1, 7, and 15 privilege levels

Access Control Lists (ACLs)

Support for up to 512 rules

Drop or rate limit based on source and destination MAC, VLAN ID or IPv4 or IPv6 address, IPv6 flow label, protocol, port, Differentiated Services Code Point (DSCP)/IP precedence, TCP/UDP source and destination ports, 802.1p priority, Ethernet type, Internet Control Message Protocol (ICMP) packets, IGMP packets, TCP flag; ACL can be applied on both ingress and egress sides

Time-based ACLs supported

Quality of service

Priority levels

8 hardware queues

Scheduling

Strict priority and Weighted Round-Robin (WRR) queue assignment based on DSCP and class of service (802.1p/CoS)

Class of service

Port based; 802.1p VLAN priority based; IPv4/v6 IP precedence/Type of Service (ToS)/DSCP based; Differentiated Services (DiffServ); classification and re-marking ACLs, trusted QoS

Rate limiting

Ingress policer; egress shaping and rate control; per VLAN, per port, and flow based

Congestion avoidance

A TCP congestion avoidance algorithm is required to reduce and prevent global TCP loss synchronization

Standards

Standards

IEEE 802.3 10BASE-T Ethernet, IEEE 802.3u 100BASE-TX Fast Ethernet, IEEE 802.3ab 1000BASE-T Gigabit Ethernet, IEEE 802.3ad Link Aggregation Control Protocol, IEEE 802.3z Gigabit Ethernet, IEEE 802.3x Flow Control, IEEE 802.3 ad LACP, IEEE 802.1D (STP), IEEE 802.1Q/p VLAN, IEEE 802.1w RSTP, IEEE 802.1s Multiple STP, IEEE 802.1X Port Access Authentication, IEEE 802.3af, IEEE 802.3at, RFC 768, RFC 783, RFC 791, RFC 792, RFC 793, RFC 813, RFC 879, RFC 896, RFC 826, RFC 854, RFC 855, RFC 856, RFC 858, RFC 894, RFC 919, RFC 920, RFC 922, RFC 950, RFC 951, RFC 1042, RFC 1071, RFC 1123, RFC 1141, RFC 1155, RFC 1157, RFC 1213, RFC 1215, RFC 1286, RFC 1350, RFC 1442, RFC 1451, RFC 1493, RFC 1533, RFC 1541, RFC 1542, RFC 1573, RFC 1624, RFC 1643, RFC 1700, RFC 1757, RFC 1867, RFC 1907, RFC 2011, RFC 2012, RFC 2013, RFC 2030, RFC 2131, RFC 2132, RFC 2233, RFC 2576, RFC 2616, RFC 2618, RFC 2665, RFC 2666, RFC 2674, RFC 2737, RFC 2819, RFC 2863, RFC 3164, RFC 3411, RFC 3412, RFC 3413, RFC 3414, RFC 3415, RFC 3416, RFC 4330

IPv6

IPv6

IPv6 host mode

IPv6 over Ethernet

Dual IPv6/IPv4 stack

IPv6 Neighbor Discovery (ND)

IPv6 stateless address auto configuration

Path Maximum Transmission Unit (MTU) discovery

Duplicate Address Detection (DAD)

Internet Control Message Protocol (ICMP) version 6

IPv6 over IPv4 network with Intrasite Automatic Tunnel Addressing Protocol (ISATAP) support

USGv6 and IPv6 Gold Logo certified

IPv6 QoS

Prioritize IPv6 packets in hardware

IPv6 ACL

Drop or rate limit IPv6 packets in hardware

Multicast Listener Discovery (MLD v1/2) snooping

Deliver IPv6 multicast packets only to the required receivers

IPv6 applications

Web/SSL, Telnet server/SSH, Ping, Traceroute, Simple Network Time Protocol (SNTP), Trivial File Transfer Protocol (TFTP), Simple Network Management Protocol (SNMP), Remote Authentication Dial-In User Service (RADIUS), Syslog, DNS client, DHCP client, DHCP autoconfig

IPv6 RFCs supported

RFC 4443 (which obsoletes RFC 2463): ICMPv6

RFC 4291 (which obsoletes RFC 3513): IPv6 address architecture

RFC 4291: IPv6 Addressing Architecture

RFC 2460: IPv6 Specification

RFC 4861 (which obsoletes RFC 2461): Neighbor Discovery for IPv6

RFC 4862 (which obsoletes RFC 2462): IPv6 Stateless Address Autoconfiguration

RFC 1981: Path MTU Discovery

RFC 4007: IPv6 Scoped Address Architecture

RFC 3484: Default address selection mechanism

RFC 5214 (which obsoletes RFC 4214): ISATAP tunneling

RFC 4293: Management Information Base (MIB) IPv6: Textual Conventions and General Group

RFC 3595: Textual Conventions for IPv6 Flow Label

Management

Cisco Business Dashboard

Support for embedded probe for Cisco Business Dashboard running on the switch. Eliminates the need to set up a separate hardware or virtual machine for the Cisco Business Dashboard Probe on site.

Cisco Business mobile app

Mobile app for Cisco Business Switch and Wireless products. Helps to set up a local network in minutes and provide easy management at your fingertips.

Cisco Network Plug and Play (PnP) agent

The Cisco Network Plug and Play solution provides a simple, secure, unified, and integrated offering to ease new branch or campus device rollouts or for provisioning updates to an existing network. The solution provides a unified approach to provision Cisco routers, switches, and wireless devices with a near-zero-touch deployment experience.

Supports Cisco PnP Connect

Web user interface

Built-in switch configuration utility for easy browser-based device configuration (HTTP/HTTPS). Supports configuration, wizards, system dashboard, system maintenance, and monitoring

Basic and advanced mode for maximum operational efficiency

SNMP

SNMP versions 1, 2c, and 3 with support for traps, and SNMP v3 User-based Security Model (USM)

Standard MIBs

lldp-MIB

lldpextdot1-MIB

lldpextdot3-MIB

lldpextmed-MIB

rfc2674-MIB

rfc2575-MIB

rfc2573-MIB

rfc2233-MIB

rfc2013-MIB

rfc2012-MIB

rfc2011-MIB

RFC-1212

RFC-1215

SNMPv2-CONF

SNMPv2-TC

p-bridge-MIB

q-bridge-MIB

rfc1389-MIB

rfc1493-MIB

rfc1611-MIB

rfc1612-MIB

rfc1850-MIB

rfc1907-MIB

rfc2571-MIB

rfc2572-MIB

rfc2574-MIB

rfc2576-MIB

rfc2613-MIB

rfc2665-MIB

rfc2668-MIB

rfc2737-MIB

rfc2925-MIB

rfc3621-MIB

rfc4668-MIB

rfc4670-MIB

trunk-MIB

tunnel-MIB

udp-MIB

draft-ietf-bridge-8021x-MIB

draft-ietf-bridge-rstpmib-04-MIB

draft-ietf-hubmib-etherif-mib-v3-00-MIB

draft-ietf-syslog-device-MIB

ianaaddrfamnumbers-MIB

ianaifty-MIB

ianaprot-MIB

inet-address-MIB

ip-forward-MIB

ip-MIB

RFC1155-SMI

RFC1213-MIB

SNMPv2-MIB

SNMPv2-SMI

SNMPv2-TM

RMON-MIB

rfc1724-MIB

dcb-raj-DCBX-MIB-1108-MIB

rfc1213-MIB

rfc1757-MIB

Private MIBs

CISCOSB-lldp-MIB

CISCOSB-brgmulticast-MIB

CISCOSB-bridgemibobjects-MIB

CISCOSB-bonjour-MIB

CISCOSB-dhcpcl-MIB

CISCOSB-MIB

CISCOSB-wrandomtaildrop-MIB

CISCOSB-traceroute-MIB

CISCOSB-telnet-MIB

CISCOSB-stormctrl-MIB

CISCOSBssh-MIB

CISCOSB-socket-MIB

CISCOSB-sntp-MIB

CISCOSB-smon-MIB

CISCOSB-phy-MIB

CISCOSB-multisessionterminal-MIB

CISCOSB-mri-MIB

CISCOSB-jumboframes-MIB

CISCOSB-gvrp-MIB

CISCOSB-endofmib-MIB

CISCOSB-dot1x-MIB

CISCOSB-deviceparams-MIB

CISCOSB-cli-MIB

CISCOSB-cdb-MIB

CISCOSB-brgmacswitch-MIB

CISCOSB-3sw2swtables-MIB

CISCOSB-smartPorts-MIB

CISCOSB-tbi-MIB

CISCOSB-macbaseprio-MIB

CISCOSB-env_mib-MIB

CISCOSB-policy-MIB

CISCOSB-sensor-MIB

CISCOSB-aaa-MIB

CISCOSB-application-MIB

CISCOSB-bridgesecurity-MIB

CISCOSB-copy-MIB

CISCOSB-CpuCounters-MIB

CISCOSB-Custom1BonjourService-MIB

CISCOSB-dhcp-MIB

CISCOSB-dlf-MIB

CISCOSB-dnscl-MIB

CISCOSB-embweb-MIB

CISCOSB-fft-MIB

CISCOSB-file-MIB

CISCOSB-greeneth-MIB

CISCOSB-interfaces-MIB

CISCOSB-interfaces_recovery-MIB

CISCOSB-ip-MIB

CISCOSB-iprouter-MIB

CISCOSB-ipv6-MIB

CISCOSB-mnginf-MIB

CISCOSB-lcli-MIB

CISCOSB-localization-MIB

CISCOSB-mcmngr-MIB

CISCOSB-mng-MIB

CISCOSB-physdescription-MIB

CISCOSB-PoE-MIB

CISCOSB-protectedport-MIB

CISCOSB-rmon-MIB

CISCOSB-rs232-MIB

CISCOSB-SecuritySuite-MIB

CISCOSB-snmp-MIB

CISCOSB-specialbpdu-MIB

CISCOSB-banner-MIB

CISCOSB-syslog-MIB

CISCOSB-TcpSession-MIB

CISCOSB-traps-MIB

CISCOSB-trunk-MIB

CISCOSB-tuning-MIB

CISCOSB-tunnel-MIB

CISCOSB-udp-MIB

CISCOSB-vlan-MIB

CISCOSB-ipstdacl-MIB

CISCOSB-eee-MIB

CISCOSB-ssl-MIB

CISCOSB-qosclimib-MIB

CISCOSB-digitalkeymanage-MIB

CISCOSB-tbp-MIB

CISCOSMB-MIB

CISCOSB-secsd-MIB

CISCOSB-draft-ietf-entmib-sensor-MIB

CISCOSB-draft-ietf-syslog-device-MIB

CISCOSB-rfc2925-MIB

CISCO-SMI-MIB

CISCOSB-DebugCapabilities-MIB

CISCOSB-CDP-MIB

CISCOSB-vlanVoice-MIB

CISCOSB-EVENTS-MIB

CISCOSB-sysmng-MIB

CISCOSB-sct-MIB

CISCO-TC-MIB

CISCO-VTP-MIB

CISCO-CDP-MIB

Remote monitoring (RMON)

Embedded RMON software agent supports 4 RMON groups (history, statistics, alarms, and events) for enhanced traffic management, monitoring, and analysis

IPv4 and IPv6 dual stack

Coexistence of both protocol stacks to ease migration

Firmware upgrade

Web browser upgrade (HTTP/HTTPS) and TFTP and upgrade over SCP running over SSH

Dual images for resilient firmware upgrades

Port mirroring

Traffic on a port can be mirrored to another port for analysis with a network analyzer or RMON probe. Up to 4 source ports can be mirrored to one destination port

VLAN mirroring

Traffic from a VLAN can be mirrored to a port for analysis with a network analyzer or RMON probe. Up to 4 source VLANs can be mirrored to one destination port

Dynamic Host Configuration Protocol (DHCP) (options 12, 59, 60, 66, 67, 125, 129, and 150)

DHCP options facilitate tighter control from a central point (DHCP server), to obtain IP address, autoconfiguration (with configuration and image file download), DHCP Relay, and host name

Secure Copy (SCP)

Securely transfers files to and from the switch

Autoconfiguration with SCP file download

Enables mass deployment with protection of sensitive data

Text-editable configs

Config files can be edited with a text editor and downloaded to another switch, facilitating easier mass deployment

Smartports

Simplified configuration of QoS and security capabilities

Auto Smartports

Automatically applies the intelligence delivered through the Smartports roles to the port based on the devices discovered over Cisco Discovery Protocol or LLDP-MED. This facilitates zero-touch deployments.

Text view Command-Line Interface (CLI)

Scriptable CLI. A full CLI as well as a menu-based CLI is supported. User privilege levels 1, 7, and 15 are supported for the CLI.

Localization

Localization of GUI and documentation into multiple languages

Login banner

Configurable multiple banners for web as well as CLI

Other management

Traceroute; single IP management; HTTP/HTTPS; RADIUS; port mirroring; TFTP upgrade; DHCP client; Simple Network Time Protocol (SNTP); cable diagnostics; Ping; syslog; Telnet client (SSH secure support); automatic time settings from Management Station

Green (power efficiency)

Energy detect

Automatically turns power off on RJ-45 port when detecting link down. Active mode is resumed without loss of any packets when the switch detects the link is up

Cable length detection

Adjusts the signal strength based on the cable length. Reduces the power consumption for shorter cables

EEE compliant (802.3az)

Supports IEEE 802.3az on all copper Gigabit Ethernet ports

Disable port LEDs

LEDs can be manually turned off to save on energy

Time-based port operation

Link up or down based on user-defined schedule (when the port is administratively up)

Time-based PoE

PoE power can be on or off based on user-defined schedule to save energy

General

Jumbo frames

Frame sizes up to 9K bytes. The default MTU is 2K bytes

MAC table

8K addresses

Discovery

Bonjour

The switch advertises itself using the Bonjour protocol

Link Layer Discovery Protocol (LLDP) (802.1ab) with LLDP-MED extensions

Link Layer Discovery Protocol (LLDP) allows the switch to advertise its identification, configuration, and capabilities to neighboring devices that store the data in a MIB. LLDP-MED is an enhancement to LLDP that adds the extensions needed for IP phones

Cisco Discovery Protocol

The switch advertises itself using the Cisco Discovery Protocol. It also learns the connected device and its characteristics using Cisco Discovery Protocol

Power over Ethernet (PoE)

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

CBS250-8PP-D

45W

8

CBS250-8PP-E-2G

45W

8

CBS250-8P-E-2G

60W

8

CBS250-8FP-E-2G

120W

8

CBS250-16P-2G

120W

16

CBS250-24PP-4G

100W

24

CBS250-24P-4G

195W

24

CBS250-24FP-4G

370W

24

CBS250-48PP-4G

195W

48

CBS250-48P-4G

370W

48

CBS250-24P-4X

195W

24

CBS250-24FP-4X

370W

24

CBS250-48P-4X

370W

48

PoE Powered Device (PD)

Select compact switch models can work as PoE Powered Device (PD) and be powered by upstream PoE switches.

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

CBS250-8T-D

1 x PoE input (802.3af) on port 1 or AC power

Hardware

Power consumption (worst case)

Model

System power consumption

Power consumption (with PoE)

Heat dissipation (BTU/hr)

CBS250-8T-D

110V=7.6W

220V=7.6W

N/A

25.93

CBS250-8PP-D

110V=9.1W

220V=10.1W

110V=61.4W

220V=59.8W

209.51

CBS250-8T-E-2G

110V=12.55W

220V=12.56W

N/A

42.86

CBS250-8PP-E-2G

110V=14.34W

220V=14.47W

110V=65.29W

220V=66.02W

222.79

CBS250-8P-E-2G

110V=13.84W

220V=14.31W

110V=80.79W

220V=80.86W

275.91

CBS250-8FP-E-2G

110V=17.07W

220V=16.68W

110V=147.48W

220V=145.26W

503.22

CBS250-16T-2G

110V=18.63W

220V=18.37W

N/A

64.46

CBS250-16P-2G

110V=24.51W

220V=25.01W

110V=156.4W

220V=154.5W

536.05

CBS250-24T-4G

110V=25.91W

220V=25.63W

N/A

89.13

CBS250-24PP-4G

110V=34.4W

220V=33.11W

110V=138.9W

220V=138.1W

476.68

CBS250-24P-4G

110V=34.42W

220V=33.09W

110V=239.7W

220V=236.4W

820.28

CBS250-24FP-4G

110V=46.60W

220V=46.35W

110V=449.7W

220V=438.3W

1,536.83

CBS250-48T-4G

110V=48.27W

220V=48.64W

N/A

165.96

CBS250-48PP-4G

110V=68.68W

220V=67.18W

110V=276.75W

220V=270.58W

944.31

CBS250-48P-4G

110V=60.77W

220V=59.73W

110V=451.95W

220V=445.85W

1,542.12

CBS250-24T-4X

110V=27.54W

220V=27.25W

N/A

93.32

CBS250-24P-4X

110V=35.72W

220V=34.53W

110V=240.4W

220V=236.9W

822.67

CBS250-24FP-4X

110V=47.14W

220V=47.01W

110V=451.8W

220V=437.4W

1,543.99

CBS250-48T-4X

110V=51.01W

220V=50.58W

N/A

174.06

CBS250-48P-4X

110V=61.53W

220V=60.73W

110V=471.90W

220V=463.32W

1,610.19

Ports

Model name

Total system ports

RJ-45 ports

Combo ports (RJ-45 + SFP)

CBS250-8T-D

8 Gigabit Ethernet

8 Gigabit Ethernet

–

CBS250-8PP-D

8 Gigabit Ethernet

8 Gigabit Ethernet

–

CBS250-8T-E-2G

10 Gigabit Ethernet

8 Gigabit Ethernet

2 Gigabit Ethernet combo

CBS250-8PP-E-2G

10 Gigabit Ethernet

8 Gigabit Ethernet

2 Gigabit Ethernet combo

CBS250-8P-E-2G

10 Gigabit Ethernet

8 Gigabit Ethernet

2 Gigabit Ethernet combo

CBS250-8FP-E-2G

10 Gigabit Ethernet

8 Gigabit Ethernet

2 Gigabit Ethernet combo

CBS250-16T-2G

18 Gigabit Ethernet

16 Gigabit Ethernet

2 Small Form-Factor Pluggable (SFP)

CBS250-16P-2G

18 Gigabit Ethernet

16 Gigabit Ethernet

2 SFP

CBS250-24T-4G

28 Gigabit Ethernet

24 Gigabit Ethernet

4 SFP

CBS250-24PP-4G

28 Gigabit Ethernet

24 Gigabit Ethernet

4 SFP

CBS250-24P-4G

28 Gigabit Ethernet

24 Gigabit Ethernet

4 SFP

CBS250-24FP-4G

28 Gigabit Ethernet

24 Gigabit Ethernet

4 SFP

CBS250-48T-4G

52 Gigabit Ethernet

48 Gigabit Ethernet

4 SFP

CBS250-48PP-4G

52 Gigabit Ethernet

48 Gigabit Ethernet

4 SFP

CBS250-48P-4G

52 Gigabit Ethernet

48 Gigabit Ethernet

4 SFP

CBS250-24T-4X

24 Gigabit Ethernet +
4 10 Gigabit Ethernet

24 Gigabit Ethernet

4 SFP+

CBS250-24P-4X

24 Gigabit Ethernet +
4 10 Gigabit Ethernet

24 Gigabit Ethernet

4 SFP+

CBS250-24FP-4X

24 Gigabit Ethernet +
4 10 Gigabit Ethernet

24 Gigabit Ethernet

4 SFP+

CBS250-48T-4X

48 Gigabit Ethernet +
4 10 Gigabit Ethernet

48 Gigabit Ethernet

4 SFP+

CBS250-48P-4X

48 Gigabit Ethernet +
4 10 Gigabit Ethernet

48 Gigabit Ethernet

4 SFP+

Console port

Cisco Standard RJ45 console port^*

^*Not available on CBS250-8T-D and CBS250-8PP-D

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 5e or better for 1000BASE-T

LEDs

System, Link/Act, PoE, Speed

Flash

256 MB

CPU

800 MHz ARM

DRAM

512 MB

Packet buffer

All numbers are aggregate across all ports because the buffers are dynamically shared:

Model name

Packet buffer

CBS250-8T-D

1.5 MB

CBS250-8PP-D

1.5 MB

CBS250-8T-E-2G

1.5 MB

CBS250-8PP-E-2G

1.5 MB

CBS250-8P-E-2G

1.5 MB

CBS250-8FP-E-2G

1.5 MB

CBS250-16T-2G

1.5 MB

CBS250-16P-2G

1.5 MB

CBS250-24T-4G

1.5 MB

CBS250-24PP-4G

1.5 MB

CBS250-24P-4G

1.5 MB

CBS250-24FP-4G

1.5 MB

CBS250-48T-4G

3 MB

CBS250-48PP-4G

3 MB

CBS250-48P-4G

3 MB

CBS250-24T-4X

1.5 MB

CBS250-24P-4X

1.5 MB

CBS250-24FP-4X

1.5 MB

CBS250-48T-4X

3 MB

CBS250-48P-4X

3 MB

Supported SFP/SFP+ modules

SKU

Media

Speed

Maximum distance

MGBSX1

Multimode fiber

1000 Mbps

500 m

MGBLH1

Single-mode fiber

1000 Mbps

40 km

MGBLX1

Single-mode fiber

1000 Mbps

10 km

MGBT1

UTP cat 5e

1000 Mbps

100 m

GLC-SX-MMD

Multimode fiber

1000 Mbps

550 m

GLC-LH-SMD

Single-mode fiber

1000 Mbps

10 km

GLC-BX-U

Single-mode fiber

1000 Mbps

10 km

GLC-BX-D

Single-mode fiber

1000 Mbps

10 km

GLC-TE

UTP cat 5e

1000 Mbps

100 m

SFP-H10GB-CU1M

Copper coax

10 Gig

1 m

SFP-H10GB-CU3M

Copper coax

10 Gig

3 m

SFP-H10GB-CU5M

Copper coax

10 Gig

5 m

SFP-10G-SR

Multimode fiber

10 Gig

26 m - 400 m

SFP-10G-LR

Single-mode fiber

10 Gig

10 km

SFP-10G-SR-S

Multimode fiber

10 Gig

26 m - 400 m

SFP-10G-LR-S

Single-mode fiber

10 Gig

10 km

Environmental

Unit dimensions
(W x D x H)

Model name

Unit dimensions

CBS250-8T-D

160 x 128 x 30 mm (6.3 x 5.04 x 1.18 in)

CBS250-8PP-D

160 x 128 x 30 mm (6.3 x 5.04 x 1.18 in)

CBS250-8T-E-2G

268 x 185 x 44 mm (10.56 x 7.28 x 1.73 in)

CBS250-8PP-E-2G

268 x 185 x 44 mm (10.56 x 7.28 x 1.73 in)

CBS250-8P-E-2G

268 x 185 x 44 mm (10.56 x 7.28 x 1.73 in)

CBS250-8FP-E-2G

268 x 185 x 44 mm (10.56 x 7.28 x 1.73 in)

CBS250-16T-2G

268 x 272 x 44 mm (10.56 x 10.69 x 1.73 in)

CBS250-16P-2G

268 x 297 x 44 mm (10.56 x 11.69 x 1.73 in)

CBS250-24T-4G

445 x 240 x 44 mm (17.5 x 9.45 x 1.73 in)

CBS250-24PP-4G

445 x 299 x 44 mm (17.5 x 11.77 x 1.73 in)

CBS250-24P-4G

445 x 299 x 44 mm (17.5 x 11.77 x 1.73 in)

CBS250-24FP-4G

445 x 345 x 44 mm (17.5 x 13.59 x 1.73 in)

CBS250-48T-4G

445 x 288 x 44 mm (17.5 x 11.33 x 1.73 in)

CBS250-48PP-4G

445 x 350 x 44 mm (17.5 x 13.78 x 1.73 in)

CBS250-48P-4G

445 x 350 x 44 mm (17.5 x 13.78 x 1.73 in)

CBS250-24T-4X

445 x 240 x 44 mm (17.5 x 9.45 x 1.73 in)

CBS250-24P-4X

445 x 299 x 44 mm (17.5 x 11.77 x 1.73 in)

CBS250-24FP-4X

445 x 345 x 44 mm (17.5 x 13.59 x 1.73 in)

CBS250-48T-4X

445 x 288 x 44 mm (17.5 x 11.33 x 1.73 in)

CBS250-48P-4X

445 x 350 x 44 mm (17.5 x 13.78 x 1.73 in)

Unit weight

Model name

Unit weight

CBS250-8T-D

0.54 kg (1.19 lb)

CBS250-8PP-D

0.56 kg (1.23 lb)

CBS250-8T-E-2G

1.39 kg (3.06 lb)

CBS250-8PP-E-2G

1.53 kg (3.37 lb)

CBS250-8P-E-2G

1.53 kg (3.37 lb)

CBS250-8FP-E-2G

1.53 kg (3.37 lb)

CBS250-16T-2G

1.78 kg (3.92 lb)

CBS250-16P-2G

2.38 kg (5.25 lb)

CBS250-24T-4G

2.63 kg (5.80 lb)

CBS250-24PP-4G

3.53 kg (7.78 lb)

CBS250-24P-4G

3.53 kg (7.78 lb)

CBS250-24FP-4G

4.6 kg (10.14 lb)

CBS250-48T-4G

3.95 kg (8.71 lb)

CBS250-48PP-4G

5.43 kg (11.97 lb)

CBS250-48P-4G

5.43 kg (11.97 lb)

CBS250-24T-4X

2.78 kg (6.13 lb)

CBS250-24P-4X

3.68 kg (8.11 lb)

CBS250-24FP-4X

4.6 kg (10.14 lb)

CBS250-48T-4X

3.95 kg (8.71 lb)

CBS250-48P-4X

5.43 kg (11.97 lb)

Power

100 to 240V 50 to 60 Hz, internal, universal: CBS250-16T-2G, CBS250-16P-2G, CBS250-24T-4G, CBS250-24PP-4G, CBS250-24P-4G, CBS250-24FP-4G, CBS250-48T-4G, CBS250-48PP-4G, CBS250-48P-4G, CBS250-24T-4X, CBS250-24P-4X, CBS250-24FP-4X, CBS250-48T-4X, CBS250-48P-4X

100 to 240V 50 to 60 Hz, external: CBS250-8T-D, CBS250-8PP-D, CBS250-8T-E-2G, CBS250-8PP-E-2G, CBS250-8P-E-2G, CBS250-8FP-E-2G

Certification

UL (UL 62368), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class A

Operating temperature

32° to 122°F (0° to 50°C) for CBS250-8T-D and CBS250-8PP-D

23° to 122°F (-5° to 50°C) for other models

Storage temperature

-13° to 158°F (-25° to 70°C)

Operating humidity

10% to 90%, relative, noncondensing

Storage humidity

10% to 90%, relative, noncondensing

Acoustic noise and Mean Time Between Failures (MTBF)

Model name

Fan (number)

Acoustic noise

MTBF at 25°C (hours)

CBS250-8T-D

Fanless

N/A

3,277,956

CBS250-8PP-D

Fanless

N/A

1,659,542

CBS250-8T-E-2G

Fanless

N/A

2,171,669

CBS250-8PP-E-2G

Fanless

N/A

1,706,649

CBS250-8P-E-2G

Fanless

N/A

1,706,649

CBS250-8FP-E-2G

Fanless

N/A

1,706,649

CBS250-16T-2G

Fanless

N/A

2,165,105

CBS250-16P-2G

Fanless

N/A

706,983

CBS250-24T-4G

Fanless

N/A

2,026,793

CBS250-24PP-4G

Fanless

N/A

698,220

CBS250-24P-4G

Fanless

N/A

698,220

CBS250-24FP-4G

1

25°C: 34.8 dBA

698,220

CBS250-48T-4G

1

25°C: 29.7 dBA

1,452,667

CBS250-48PP-4G

1

25°C: 37.3 dBA

1,206,349

CBS250-48P-4G

1

25°C: 37.3 dBA

856,329

CBS250-24T-4X

Fanless

N/A

2,026,793

CBS250-24P-4X

Fanless

N/A

698,220

CBS250-24FP-4X

1

25°C: 34.8 dBA

698,220

CBS250-48T-4X

1

25°C: 29.7 dBA

1,452,667

CBS250-48P-4X

1

25°C: 37.3 dBA

856,329

Warranty

Limited lifetime

Package contents

Minimum requirements