Cisco 2950-12 - Catalyst Switch Dimensions

Cisco Systems, Inc.

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Product Bulletin No. 1855

Cisco Catalyst 2950 Series

Software Feature Comparison—Standard Image (SI)

and Enhanced Image (EI) Feature Comparison

The Cisco Catalyst®2950 Series switches include two software image versions that support

different degrees of functionality—the Standard Image (SI) and the Enhanced Image (EI)

Software. The version of software depends solely on the model of switch selected, with no

upgrade capabilities.

The SI version is embedded in Cisco Catalyst 2950-12, 2950-24, and 2950SX-24 switches,

and supports basic Cisco IOS®functionality, Fast Ethernet connectivity, and cluster

management.

The EI version supports all that and more. The EI version of software is embedded in Cisco

Catalyst 2950T-24, 2950C-24, and 2950G-12, 2950G-24, 2950G-48 switches, and

supportsadvancedintelligentservices,gigabitconnectivity, and a richer set of features. These

include Cisco Spanning-Tree Protocol enhancements for high availability, access control

parameters (ACPs) for enhanced security, and Differentiated Services Code Point (DCSP)

and rate limiting for advanced quality of service.

The following tables highlight feature comparisons between the ﬁxed-conﬁguration Cisco

Catalyst2950Seriesswitcheswiththe SI or EI software,andtheﬁxed-conﬁgurationCatalyst

2900 Series XL (ﬁxed-conﬁguration Catalyst 2900 XL switches have been discontinued,

modular conﬁgurations still available).

Table 1 Catalyst 2950 Series Switches

Product Software Image

Catalyst 2950-12 Standard Image (SI)

Catalyst 2950-24 Standard Image (SI)

Catalyst 2950SX-24 Standard Image (SI)

Catalyst 2950T-24 Enhanced Image (EI)

Catalyst 2950C-24 Enhanced Image (EI)

Catalyst 2950G-12-EI Enhanced Image (EI)

Catalyst 2950G-24-EI Enhanced Image (EI)

Catalyst 2950G-24-EI-DC Enhanced Image (EI)

Catalyst 2950G-48-EI Enhanced Image (EI)

Cisco Systems, Inc.

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Table 2 Feature Comparison of Catalyst 2900 XL, Catalyst 2950 EI, and Catalyst 2950 SI Switches

Feature Fixed-Configuration

Catalyst 2900 XL Catalyst 2950 EI Catalyst 2950 SI

VLANs supported 64 250 64

4096 VLAN Ids No Yes No

Number of STP Instances 64 64 64

64 bit counters on Gig ports No Yes N/A

CWGM GBIC support No Yes N/A

Trunking

ISL Trunking Yes No No

802.1Q Yes Yes Yes

802.1Q Tunneling No No No

VTP Server, Client, Transparent

Mode Yes Yes Yes

User conﬁgurable management

VLAN Yes Yes Yes

Security

Static Access Ports Yes Yes Yes

Port Security Yes Yes Yes

Port Security MAC Aging No Yes Yes

Private VLAN Edge

(Protected Port) Yes Yes Yes

802.1x No Yes Yes

ACEs/ACPs (Layer 2-4 IP Security

Filtering) No Yes No

Port based ACLS (PACL) No Yes No

TACACS+ Yes Yes Yes

RADIUS No Yes Yes

BPDU Guard No Yes Yes

STRG Yes Yes Yes

Quality of Service

Number of Queues 244

802.1p Priority Yes Yes Yes

Strict Priority Scheduling Yes Yes Yes

Weighted Round Robin No Yes Yes

Weighted Round Robin Detect No Yes No

Cisco Systems, Inc.

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Intelligent Ethernet (Policing/

Metering, Marking, Classiﬁcation,

Queuing & Scheduling)

No Yes No

Unicast/Multicast/Broadcast

Storm Control Yes Yes Yes

DHCP Option 82 No No No

DSCP Mapping No Yes No

IP Multicast

CGMP Yes No No

IGMP Snooping No Yes Yes

IGMP Filtering No Yes Yes

MVR (Multicast VLAN

Registration) Yes Yes Yes

NTP Yes Yes Yes

Link Aggregation

CNS Agent Support (IE 2100) No Yes No

Clustering Yes Yes Yes

Fast EtherChannel Yes Yes Yes

Gigabit EtherChannel Yes (limited to

Catalyst 2900M XL) Yes Yes (only supported on

Catalyst 2950SX-24)

Rapid Spanning Tree (802.1w) No Yes No

Multiple Spanning Tree (802.1s) No Yes No

PAgP No Yes Yes

DTP No Yes Yes

VTP Pruning Yes Yes Yes

Filtering & Throttling No Yes Yes

SPAN Yes Yes Yes

Mini-jumbo Frame Support Yes Yes (Catalyst 2950G

switches only) No

Static and Dynamic MAC

Addressing Yes Yes Yes

Dynamic Access Ports Yes Yes Yes

CDP v2 Yes Yes Yes

UDLD Yes Yes Yes

Protected Port (PVLAN Edge) Yes Yes Yes

Table 2 Feature Comparison of Catalyst 2900 XL, Catalyst 2950 EI, and Catalyst 2950 SI Switches (Continued)

Feature Fixed-Configuration

Catalyst 2900 XL Catalyst 2950 EI Catalyst 2950 SI

Cisco Systems, Inc.

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Port duplex/speed Yes Yes Yes

Port Flow Control Yes Yes Yes

SysLog Yes Yes Yes

HTTP Enhancements Yes Yes Yes

MAC Addresses 2000 8000 8000

IP Host connectivity equivalent to

2900XL/3500XL such as telnet,

DHCP, BootP Client, DNS

Yes Yes Yes

Spanning-Tree Protocol

CrossStack UplinkFast Yes (limited to

2900M XL) Yes N/A

PortFast Yes Yes Yes

UplinkFast Yes Yes Yes

BackboneFast No Yes Yes

VLANs

Voice VLAN Yes Yes Yes

Per port enabling/disabling of

unknown unicast/multicast

ﬂooding

Yes No No

Multi-VLAN ports Yes No No

Network (Drain) Port Yes No No

Table 2 Feature Comparison of Catalyst 2900 XL, Catalyst 2950 EI, and Catalyst 2950 SI Switches (Continued)

Feature Fixed-Configuration

Catalyst 2900 XL Catalyst 2950 EI Catalyst 2950 SI

Corporate Headquarters

Cisco Systems, Inc.

170 West Tasman Drive

San Jose, CA 95134-1706

USA

www.cisco.com

Tel: 408 526-4000

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Fax: 408 526-4100

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Haarlerbergweg 13-19

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The Netherlands

www-europe.cisco.com

Tel: 31 0 20 357 1000

Fax: 31 0 20 357 1100

Americas Headquarters

Cisco Systems, Inc.

170 West Tasman Drive

San Jose, CA 95134-1706

USA

www.cisco.com

Tel: 408 526-7660

Fax: 408 527-0883

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Capital Tower

168 Robinson Road

#22-01 to #29-01

Singapore 068912

www.cisco.com

Tel: +65 317 7777

Fax: +65 317 7799

Cisco Systems has more than 200 ofﬁces in the following countries and regions. Addresses, phone numbers, and fax numbers are listed on the

Cisco Web site at www.cisco.com/go/offices

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All contents are Copyright © 1992–2002, Cisco Systems, Inc. All rights reserved. Catalyst, Cisco, Cisco IOS, Cisco Systems, the Cisco Systems logo, EtherChannel, FastHub, and GigaStack are registered trademarks of Cisco

Systems, Inc. and/or its affiliates in the U.S. and certain other countries.

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