|
Feature |
Description |
|
Performance |
|
Switching capacity and forwarding rate |
Model |
Capacity in Millions of Packets per Second (mpps) (64-byte
packets) |
Switching Capacity in Gigabits per Second (Gbps) |
|
All switches are wire-speed and nonblocking |
SG250-26P |
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) |
|
Up to 4 groups |
|
Up to 8 ports per group with 16 candidate ports for each (dynamic)
802.3ad LAG |
|
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. |
|
Security |
|
SSL |
Secure Sockets Layer (SSL) encrypts all HTTPS traffic, allowing secure
access to the browser-based management GUI in the
switch. |
|
IEEE 802.1X (authenticator role) |
RADIUS authentication, MD5 hash, single/multiple host mode, and
single/multiple sessions. |
|
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 plaintext or
encrypted is provided according to the user-configured access level and
the access method of the user. |
|
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. |
|
Quality of Service |
|
Priority levels |
4 hardware queues |
|
Scheduling |
Strict priority and weighted round-robin (WRR) |
|
Class of service |
Port based; 802.1p VLAN priority based; IPv4/v6 IP precedence/ToS/DSCP
based; DiffServ; trusted QoS Queue assignment based on differentiated
services code point (DSCP) and class of service
(802.1p/CoS) |
|
Rate limiting |
Ingress policer, per VLAN, per port |
|
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 and router 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 |
|
Multicast Listener Discovery (MLD v1/2) snooping |
Deliver IPv6 multicast packets only to the required
receivers |
|
IPv6 applications |
Web/SSL, 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 RFC supported |
RFC 4443 (which obsoletes RFC 2463): ICMPv6 |
|
RFC 4291 (which obsoletes RFC 3513): IPv6 address
architecture |
|
RFC 4291: IP Version 6 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; MIB IPv6: Textual Conventions and General
Group |
|
RFC 3595: Textual Conventions for IPv6 Flow Label |
|
Management |
|
Web user interface |
Built-in switch configuration utility for easy browser-based device
configuration (HTTP/HTTPS). Supports configuration, system dashboard,
system maintenance, and monitoring. |
|
SNMP |
SNMP versions 1, 2c, and 3 with support for traps, and SNMP v3
User-based Security Model (USM) |
|
Standard MIBs |
lldp-MIB |
rfc2665-MIB |
|
lldpextdot1-MIB |
rfc2668-MIB |
|
lldpextdot3-MIB |
rfc2737-MIB |
|
lldpextmed-MIB |
rfc2925-MIB |
|
rfc2674-MIB |
rfc3621-MIB |
|
rfc2575-MIB |
rfc4668-MIB |
|
rfc2573-MIB |
rfc4670-MIB |
|
rfc2233-MIB |
trunk-MIB |
|
rfc2013-MIB |
tunnel-MIB |
|
rfc2012-MIB |
udp-MIB |
|
rfc2011-MIB |
draft-ietf-bridge-8021x-MIB |
|
RFC-1212 |
draft-ietf-bridge-rstpmib-04-MIB |
|
RFC-1215 |
draft-ietf-hubmib-etherif-mib-v3-00-MIB |
|
SNMPv2-CONF |
draft-ietf-syslog-device-MIB |
|
SNMPv2-TC |
ianaaddrfamnumbers-MIB |
|
p-bridge-MIB |
ianaifty-MIB |
|
q-bridge-MIB |
ianaprot-MIB |
|
rfc1389-MIB |
inet-address-MIB |
|
rfc1493-MIB |
ip-forward-MIB |
|
rfc1611-MIB |
ip-MIB |
|
rfc1612-MIB |
RFC1155-SMI |
|
rfc1850-MIB |
RFC1213-MIB |
|
rfc1907-MIB |
SNMPv2-MIB |
|
rfc2571-MIB |
SNMPv2-SMI |
|
rfc2572-MIB |
SNMPv2-TM |
|
rfc2574-MIB |
RMON-MIB |
|
rfc2576-MIB |
rfc1724-MIB |
|
rfc2613-MIB |
dcb-raj-DCBX-MIB-1108-MIB |
|
|
rfc1213-MIB |
|
|
rfc1757-MIB |
|
Private MIBs |
CISCOSB-lldp-MIB |
CISCOSB-ip-MIB |
|
CISCOSB-brgmulticast-MIB |
CISCOSB-iprouter-MIB |
|
CISCOSB-bridgemibobjects-MIB |
CISCOSB-ipv6-MIB |
|
CISCOSB-bonjour-MIB |
CISCOSB-mnginf-MIB |
|
CISCOSB-dhcpcl-MIB |
CISCOSB-lcli-MIB |
|
CISCOSB-MIB |
CISCOSB-localization-MIB |
|
CISCOSB-wrandomtaildrop-MIB |
CISCOSB-mcmngr-MIB |
|
CISCOSB-traceroute-MIB |
CISCOSB-mng-MIB |
|
CISCOSB-telnet-MIB |
CISCOSB-physdescription-MIB |
|
CISCOSB-stormctrl-MIB |
CISCOSB-PoE-MIB |
|
CISCOSBssh-MIB |
CISCOSB-protectedport-MIB |
|
CISCOSB-socket-MIB |
CISCOSB-rmon-MIB |
|
CISCOSB-sntp-MIB |
CISCOSB-rs232-MIB |
|
CISCOSB-smon-MIB |
CISCOSB-SecuritySuite-MIB |
|
CISCOSB-phy-MIB |
CISCOSB-snmp-MIB |
|
CISCOSB-multisessionterminal-MIB |
CISCOSB-specialbpdu-MIB |
|
CISCOSB-mri-MIB |
CISCOSB-banner-MIB |
|
CISCOSB-jumboframes-MIB |
CISCOSB-syslog-MIB |
|
CISCOSB-gvrp-MIB |
CISCOSB-TcpSession-MIB |
|
CISCOSB-endofmib-MIB |
CISCOSB-traps-MIB |
|
CISCOSB-dot1x-MIB |
CISCOSB-trunk-MIB |
|
CISCOSB-deviceparams-MIB |
CISCOSB-tuning-MIB |
|
CISCOSB-cli-MIB |
CISCOSB-tunnel-MIB |
|
CISCOSB-cdb-MIB |
CISCOSB-udp-MIB |
|
CISCOSB-brgmacswitch-MIB |
CISCOSB-vlan-MIB |
|
CISCOSB-3sw2swtables-MIB |
CISCOSB-ipstdacl-MIB |
|
CISCOSB-smartPorts-MIB |
CISCOSB-eee-MIB |
|
CISCOSB-tbi-MIB |
CISCOSB-ssl-MIB |
|
CISCOSB-macbaseprio-MIB |
CISCOSB-digitalkeymanage-MIB |
|
CISCOSB-env_mib-MIB |
CISCOSB-qosclimib-MIB |
|
CISCOSB-policy-MIB |
CISCOSB-digitalkeymanage-MIB |
|
CISCOSB-sensor-MIB |
CISCOSB-tbp-MIB |
|
CISCOSB-aaa-MIB |
CISCOSMB-MIB |
|
CISCOSB-application-MIB |
CISCOSB-secsd-MIB |
|
CISCOSB-bridgesecurity-MIB |
CISCOSB-draft-ietf-entmib-sensor-MIB |
|
CISCOSB-copy-MIB |
CISCOSB-draft-ietf-syslog-device-MIB |
|
CISCOSB-CpuCounters-MIB |
CISCOSB-rfc2925-MIB |
|
CISCOSB-Custom1BonjourService-MIB |
CISCO-SMI-MIB |
|
CISCOSB-dhcp-MIB |
CISCOSB-DebugCapabilities-MIB |
|
CISCOSB-dlf-MIB |
CISCOSB-CDP-MIB |
|
CISCOSB-dnscl-MIB |
CISCOSB-vlanVoice-MIB |
|
CISCOSB-embweb-MIB |
CISCOSB-EVENTS-MIB |
|
CISCOSB-fft-MIB |
CISCOSB-sysmng-MIB |
|
CISCOSB-file-MIB |
CISCOSB-sct-MIB |
|
CISCOSB-greeneth-MIB |
CISCO-TC-MIB |
|
CISCOSB-greeneth-MIB |
CISCO-VTP-MIB |
|
CISCOSB-interfaces-MIB |
CISCO-CDP-MIB |
|
CISCOSB-interfaces_recovery-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 SCP |
|
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, 66, 67, 129,
and 150) |
DHCP options facilitate tighter control from a central point (DHCP
server), to obtain IP address, autoconfiguration (with configuration file
download), DHCP Relay, and host name. |
|
Autoconfiguration |
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. |
|
Cloud services |
Support for Cisco Active Advisor |
|
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; 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. |
|
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. |
|
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 capability facilitates zero-touch
deployments. |
|
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 |
|
SG250-26P |
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 |
0W |
Yes |
|
2 PoE uplink |
0W |
Yes |
|
1 PoE+ uplink |
0W |
Yes |
|
2 PoE+ uplink |
22W |
Yes |
|
1 60W PoE uplink |
22W |
Yes |
|
2 60W PoE uplink |
50W |
Yes |
|
AC Power |
62W |
Yes |
|
Power consumption (worst case) |
Model |
Green Power (mode) |
System Power Consumption |
Power Consumption (with PoE) |
Heat Dissipation (BTU/hr) |
|
SG250-26P |
EEE, Energy Detect, Short Reach |
110V=34.2W |
110V=262W |
893.98 |
|
220V=37.2W |
220V=254.5W |
|
Ports |
Model Name |
Total System Ports |
RJ-45 Ports |
Combo Ports (RJ-45 + SFP) |
|
SG250-26P |
26 Gigabit Ethernet |
24 Gigabit Ethernet |
2 Gigabit Ethernet combo |
|
USB slot |
USBType-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 |
|
Packet buffer |
All numbers are aggregate across all ports because the buffers are
dynamically shared: |
|
Model Name |
Packet Buffer |
|
SG250-26P |
12 Mb |
|
Supported SFP/SFP+ modules |
SKU |
Media |
Speed |
Maximum Distance |
|
MGBBX1 |
Single-mode fiber |
1000 Mbps |
10 km |
|
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 |
|
Environmental |
|
Unit dimensions (W x H x D) |
Model Name |
Unit Dimensions |
|
SG250-26P |
440 x 44 x 257 mm (17.3 x 1.45 x 10.12 in) |
|
Unit weight |
Model Name |
Unit Weight |
|
SG250-26P |
3.81 kg (8.40 lb) |
|
Power |
100240V 5060 Hz, internal, universal SG250-26 |
|
Certification |
UL (UL 60950), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class
A |
|
Operating temperature |
SG250-26P: 32 to 122F (0 to 50C) |
|
Storage temperature |
-4 to 158F (-20 to 70C) |
|
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 50C (Hours) |
|
SG250-26P |
2 |
0C to 30C: 36.0dB 50C: 53.7dB |
430,341.06 |
|
Warranty |
Limited lifetime |
|
Package Contents |
|
Cisco 250 Series Smart Switch |
|
Power cord (power adapter for 10-port SKUs) |
|
Mounting kit |
|
Quick Start Guide |
|
Minimum Requirements |
|
Web browser: Mozilla Firefox version 36 or later; Microsoft Internet
Explorer version 9 or later, Chrome version 40 or later, Safari version 5
or later |
|
Category 5 Ethernet network cable |
|
TCP/IP, network adapter, and network operating system (such as
Microsoft Windows, Linux, or Mac OS X)
installed |
Networking
