Cisco WS-C2912MF-XL Uživatelský manuál stáhnout pdf (Strana 3)

switch is the best choice for use in a network with enterprise-wide

VLAN trunks spanning multiple Cisco routers, chassis switches,

and access servers. Table 1 gives features of both editions.

Key Features/Benefits

Outstanding Performance

• 24 10BASE-T/100BASE-TX autosensing ports deliver Fast

Ethernet performance where it is needed most—to individual

users, servers, and demanding workgroups— while preserving

legacy 10BASE-T connectivity.

• Full-duplex operation on switched 100BASE-T ports delivers

up to 200 Mbps of bandwidth to end stations servers and

between switches.

• A 3.2 Gbps switching fabric and 3.0 million-pps forwarding rate

ensure wire-speed operation on all 10BASE-T/100BASE-TX

ports.

• A 4-MB shared-memory architecture ensures the highest

possible throughput by eliminating head-of-line blocking,

minimizing packetloss, and reducing congestion frommulticast

and broadcast trafﬁc.

• Two high-speed expansion slots provide 1.6 Gbps of total

available bandwidth for additional 10BASE-T/100BASE-TX or

100BASE-FX ports, as well as Asynchronous Transfer Mode

(ATM) and Gigabit Ethernet uplinks.

• Bandwidth aggregation through Fast EtherChannel and Gigabit

EtherChannel technology enhances fault tolerance andoffers up

to 800 Mbps of bandwidth among switches, routers, and

individual servers.

• 12 EtherChannel bandwidth aggregation groups per switch

allow for a high-performance EtherChannel group for every two

ports on a 24-port Catalyst 2900 XL switch.

• CGMP enables a switch to selectively and dynamically forward

routed IP multicast trafﬁc to targeted multimedia end stations,

reducing overall network trafﬁc.

• A conﬁgurable network port supports unlimited Media-

Access-Control (MAC) addresses for backbone connectivity.

Flexible and Scalable Switch Clustering and Stacking

• The GigaStack GBIC delivers a low-cost, independent stack bus

with a 1 Gbps forwarding bandwidth in a daisy-chain

configuration, with up to nine Catalyst 2924M XL switches

(populated with a Gigabit Ethernet module), or a 2 Gbps

forwarding rate in a point-to-point conﬁguration.

• Cisco Switch Clustering technology allows a user to manage up

to 16 interconnected Catalyst 3500 XL, 2900 XL, and 1900

switches through a single IP address, regardless of location.

Modular, High-Speed Slots

• Two versatile high-speed slots support a range of expansion

modules with different media conﬁgurations and port densities,

allowing users the ﬂexibility to upgrade their networks and

preserve their initial investment. All ports support the Cisco ISL

and standards-based 802.1Q VLAN trunking protocols.

• Four-port 10BASE-T/100BASE-TX, two-port 100BASE-FX,

and four-port 100BASE-FX modules for the Catalyst 2924M

XL switch allow customers to easily increase port density,

provide ﬁber connectivity over extended distances, and deliver

higher-speed uplinks through Fast EtherChannel bandwidth

aggregation.

• A GBIC-based Gigabit Ethernet module for the Catalyst 2924M

XL switch allows customers to connect high-speed servers,

uplink to Gigabit Ethernet LAN backbones, and stack Catalyst

2924M XLs with the GigaStack GBIC.

• For Gigabit Ethernet connectivity at an affordable price, the

Cisco 1000BASE-T module delivers gigabit over copper

uplinks for the wiring closet.

• ATM OC-3 modules support connectivity to ATM backbones.

Ease of Use and Ease of Deployment

• The cluster software upgrade feature allows the network

manager to quickly and easily upgrade the system software on

a group of Catalyst 2900 XL, 3500 XL, and 1900 switches.

• CVSM software, a Web-based interface, provides network and

stack views of a group of Catalyst 2900 XL switches from any

node on the Internet with a Web browser.

Table 1 Standard and Enterprise Features

Standard Edition Enterprise Edition

CVSM All Standard Edition Features,

plus

Network Time Protocol (NTP) ISL and 802.1Q VLAN tagging

support

Port-based VLANs VLAN Trunking Protocol (VTP)

CGMP Fast Leave Uplink Fast

Network Port TACACS+

Fast EtherChannel and Gigabit

EtherChannel technologies

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