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Table E.3: The models and features available for the standard version of each Cisco Catalyst 2900 XL series switch.

Feature	2908 XL	2912 MFXL	2916 XL	2924 MXL	2924 CXL
10/100 ports	8	0	16	24	22
100BaseFX ports	0	12	0	0	2
Expansion slots	0	2	0	2	0
Enterprise	Yes	Yes	Yes	Yes	Yes
Edition
Standard Edition	Yes	No	Yes	Yes	Yes
Backplane	3.2Gbps	3.2Gbps	3.2Gbps	3.2Gbps	3.2Gbps
Flash	4MB	4MB	4MB	4MB	4MB
DRAM	8MB	8MB	8MB	8MB	8MB
Modularity	No	Yes	Yes	Yes	No
Forwarding rate	3 million pps	3 million pps	3 million pps	3 million pps	3 million pps
Max VLANs	64	64	64	64	64

The Cisco Catalyst 2926 and the 2948G are both similar to the architecture of the Cisco Catalyst 5000 series. These switches are store−and−forward mode switches with many high−end features:

∙A high−performance 24Gbps non−blocking architecture switching fabric capable of delivering over 1 million packets per second (pps).

∙The capability for users to configure each port with priority levels to accommodate time−sensitive applications such as voice and video.

∙Support of Fast EtherChannel (FEC) uplink bundles for up to 400Mbps on the Catalyst 2926T and 2926F. The Catalyst 2926GS and 2926GL each support uplinks of up to 800Mbps. These FEC ports can be configured between two switches, two routers, or a switch and a router. Special configurations and Network Interface Cards (NICs) also allow a server to be configured with FEC uplinks to a router or switch. This ability results in a very efficient high−speed backbone and data center uplinks with automatic load balancing and failover for port failures.

∙Support for RMON statistics, which give a good picture of network activity in the form of statistics, history, events, and alarms groups.

∙Support for VLAN load−balancing and Spanning−Tree on multiple parallel Fast Ethernet ISL trunks to increase capacity and fault tolerance between switches.

∙Support for ISL, Dynamic Inter−Switch Link (DISL), CDP, VLAN Trunk Protocol (VTP), VLAN Membership Policy Server (VMPS), Dynamic VLANs, and port security based on the MAC address.

∙Support for complete SNMP management for Ethernet Management Information Base (MIB), bridge MIB, MIB II, and VTP.

∙Support for management with CWSI, CiscoView, TrafficDirector, and VlanDirector.

∙The 2948G supports advanced scalability for Fast EtherChannel, Dynamic VLANs, and 802.1Q trunking and bandwidth control using Quality of Service (QoS) features such as protocol filtering, link load balancing, per−port security, TACACS+ authentication, and IP permit lists.

The hardware features available for the Cisco Catalyst 2900 series switches are listed in Table E.4.

Table E.4: The models and features available for the standard version of the Cisco Catalyst 2926, 2948G, and 2980G switches.

Feature	2926T/F	2926GS/GL	2948G	2980G
10/100 ports	24	24	48	80
100MB FE	2	0	0	0
Gb ports	0	2	2	2

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