Cisco Systems 3750E Manual De Usuario
1-4
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02
Chapter 1 Overview
Features
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Switch clustering technology for
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Unified configuration, monitoring, authentication, and software upgrade of multiple,
cluster-capable switches, regardless of their geographic proximity and interconnection media,
including Ethernet, Fast Ethernet, Fast EtherChannel, small form-factor pluggable (SFP)
modules, Gigabit Ethernet, Gigabit EtherChannel, 10-Gigabit Ethernet, and 10-Gigabit
EtherChannel connections. For a list of cluster-capable switches, see the release notes.
cluster-capable switches, regardless of their geographic proximity and interconnection media,
including Ethernet, Fast Ethernet, Fast EtherChannel, small form-factor pluggable (SFP)
modules, Gigabit Ethernet, Gigabit EtherChannel, 10-Gigabit Ethernet, and 10-Gigabit
EtherChannel connections. For a list of cluster-capable switches, see the release notes.
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Automatic discovery of candidate switches and creation of clusters of up to 16 switches that can
be managed through a single IP address.
be managed through a single IP address.
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Extended discovery of cluster candidates that are not directly connected to the command switch.
Performance Features
The switch ships with these performance features:
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Autosensing of port speed and autonegotiation of duplex mode on all switch ports for optimizing
bandwidth
bandwidth
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Automatic-medium-dependent interface crossover (auto-MDIX) capability on 10/100- and
10/100/1000-Mb/s interfaces and on 10/100/1000 BASE-TX SFP module interfaces that enables the
interface to automatically detect the required cable connection type (straight-through or crossover)
and to configure the connection appropriately
10/100/1000-Mb/s interfaces and on 10/100/1000 BASE-TX SFP module interfaces that enables the
interface to automatically detect the required cable connection type (straight-through or crossover)
and to configure the connection appropriately
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Support for the maximum packet size or maximum transmission unit (MTU) size for these types of
frames:
frames:
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Up to 9216 bytes for routed frames
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Up to 9216 bytes for frames that are bridged in hardware and software through Gigabit Ethernet
ports and 10-Gigabit Ethernet ports
ports and 10-Gigabit Ethernet ports
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IEEE 802.3x flow control on all ports (the switch does not send pause frames)
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Up to 64 Gb/s of throughput in a Catalyst 3750-E-only switch stack
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Up to 68 Gb/s of throughput on a Catalyst 3560-E switch
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EtherChannel for enhanced fault tolerance and for providing up to 8 Gb/s (Gigabit EtherChannel)
or 80 Gb/s (10-Gigabit EtherChannel) full-duplex bandwidth among switches, routers, and servers
or 80 Gb/s (10-Gigabit EtherChannel) full-duplex bandwidth among switches, routers, and servers
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Port Aggregation Protocol (PAgP) and Link Aggregation Control Protocol (LACP) for automatic
creation of EtherChannel links
creation of EtherChannel links
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Forwarding of Layer 2 and Layer 3 packets at Gigabit line rate
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Forwarding of Layer 2 and Layer 3 packets at Gigabit line rate across the switches in the stack
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Per-port storm control for preventing broadcast, multicast, and unicast storms
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Port blocking on forwarding unknown Layer 2 unknown unicast, multicast, and bridged broadcast
traffic
traffic
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Cisco Group Management Protocol (CGMP) server support and Internet Group Management
Protocol (IGMP) snooping for IGMP Versions 1, 2, and 3:
Protocol (IGMP) snooping for IGMP Versions 1, 2, and 3:
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(For CGMP devices) CGMP for limiting multicast traffic to specified end stations and reducing
overall network traffic
overall network traffic
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(For IGMP devices) IGMP snooping for efficiently forwarding multimedia and multicast traffic
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IGMP report suppression for sending only one IGMP report per multicast router query to the
multicast devices (supported only for IGMPv1 or IGMPv2 queries)
multicast devices (supported only for IGMPv1 or IGMPv2 queries)