Cisco WS-C3550-48-EMI Manual de usuario descargar pdf (Pagina 7)

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Product Features and Benefits

Table 1 Product Features and Beneﬁts

Feature Benefit

Availability/Scalability

High-Performance

IP Routing

• Cisco Express Forwarding(CEF)-based routing architecture performedin hardware to deliver

extremely high-performance IP routing.

• Support for basic IP unicast routing protocols (static, RIPv1, RIPv2) for small network routing

applications.

• Support for advanced IP unicast routing protocols (OSPF, IGRP, EIGRP, BGPv4) for load

balancing and constructing scalable LANs – requires EMI.

• Inter-VLAN IP routing for full Layer 3 routing between two or more VLANs.

• Equal cost routing for load balancing and redundancy.

• Protocol-Independent Multicast (PIM) for IP multicast routing within a network that enables

the network to receive the multicast feed requested and for switches not participating in the

multicast to be pruned support for PIM sparse mode (PIM-SM), PIM dense mode (PIM-DM),

and PIM sparse-dense mode – requires EMI.

• Distance Vector Multicast Routing Protocol (DVMRP) tunneling for interconnecting two

multicast-enabled networks across non-multicast networks—requires EMI.

• Fallback bridging for forwarding of non-IP trafﬁc between two or more VLANs.

• Cisco Hot Standby Router Protocol (HSRP) to create redundant fail-safe routing topologies.

Superior

Redundancy for

Fault Backup

• Cisco UplinkFast/BackboneFast technologies ensure quick fail-over recovery enhancing

overall network stability and reliability.

• CrossStack UplinkFast (CSUF) technology provides increased redundancy and network

resiliency through fast spanning-tree convergence (less than two seconds) across a stack of

switches using GigaStack GBICs in an independent stack backplane cascaded conﬁguration.

• IEEE 802.1w Rapid Spanning Tree Protocol (RSTP) provides rapid convergence of the

spanning tree independent of spanning-tree timers.

• Supports Cisco HSRP to create redundant fail-safe routing topologies.

• Redundant stacking connections provide support for a redundant loopback connection for

top and bottom switches in an independent stack backplane cascaded conﬁguration.

• Command switch redundancyenabled in the CMS Software allows customers to designate a

backup command switch that takes over cluster management functions if the primary

command switch fails.

• Provides unidirectional link detection (UDLD) and Aggressive UDLD for detecting and

disabling unidirectional links on ﬁber-optic interfaces caused by incorrect ﬁber-optic wiring

or port faults.

• Switch port Auto-recovery (or “errDisable”) automatically attempts to re-enable a link that

becomes disabled due to a network error.

• Support for Cisco’s optional Redundant Power System 300 (RPS 300 supports all Catalyst

3550 Switches except the Catalyst 3550-24 PWR) and/or the Redundant Power System 675

(RPS 675 supports all Catalyst 3550 Switches) that provides superior internal power source

redundancy for up to six Cisco networking devices resulting in improved fault tolerance and

network uptime.

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