Cisco Cat 2948G-L3 48xF+ENet 2xGENet RJ45 WS-C2948G-L3 Datenbogen

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The Catalyst 2948G-L3 with its IPX wire-speed performance is also a full-fledged IPX router with the enhancements

only Cisco IOS can offer. It provides basic services such as Novell NetWork RIP and Service Advertising Protocols

(SAPs), value-added routing protocols such as Novell Enhanced IGRP, as well as route distribution among all of these

protocols. In addition, the Catalyst 2948G-L3 supports those features that help to make a large Novell network scale.

These features include:

• Get Nearest Server (GNS) response filtering and round-robin GNS support

• Novell RIP

• SAP, protocol, and NetBIOS name filtering

• Equal-cost path load sharing

• Variable RIP and SAP timers

• Novell NetBIOS type 20 propagation support for legacy applications that continue to be mission critical

• Novell-compliant IPX ping utility

This feature set as well as the wire-speed IPX switching make the Catalyst 2948G-L3 unique in terms of switching

platforms.

The Catalyst 2948G-L3 supports IP multicast at wire speeds across all its ports. As multicast applications such as

Microsoft NetShow and NetMeeting become more widely deployed, end-to-end multicast support becomes

increasingly important with multicast routing protocols that are integral to a consistent end-to-end multicast

solution. The Catalyst 2948G-L3 supports both Protocol-Independent Multicast (PIM) sparse and dense modes, and

Distance Vector Multicast Routing Protocol (DVMRP) interoperability for legacy applications. The Catalyst

2948G-L3 provides support for IGMP, Versions 1 and 2, and CGMP server capabilities for integrating IP multicast

support with Catalyst wiring closet switches. These protocols are necessary not only for IP multicast clients to join

groups but also for efficient leave processing, which saves bandwidth and end-station CPU cycles.

The Catalyst 2948G-L3 supports both Fast EtherChannel

®

 and Gigabit EtherChannel technologies, allowing

network managers to group up to four of the 10/100 ports into a channel and group the two Gigabit Ethernets into

an uplink channel.

The Catalyst 2948G-L3 incorporates a centralized non- blocking 22-Gb shared-memory switching fabric. The rich

QoS capabilities of the switching fabric enable network managers to protect mission-critical applications by

supporting delay-sensitive traffic while managing bandwidth in the campus backbone. The switching fabric supports

per-flowqueuing (PFQ), differentiated delay priorities using a WRR scheduler for delay-sensitive applications, and

differentiated loss priorities for managing congestion and traffic policing and shaping. The fast packet memory

embedded in the switching fabric is allocated dynamically on a per-queue (flow) basis. This dynamic allocation used

in conjunction with user-defined queue thresholds and configurable queue scheduling weights ensures that

time-sensitive traffic is handled properly with no packet loss. These thresholds and queuing weights can be

dynamically adjusted with CiscoAssure Policy Networking, allowing an end-to-end QoS solution.