1-5
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Overview
Software Features
–
Up to 9216 bytes for frames that are bridged in hardware and software through Gigabit Ethernet
ports and 10-Gigabit Ethernet ports.
• IEEE 802.3x flow control on all ports (the switch does not send pause frames).
• Up to 64 Gb/s of throughput in a Catalyst 3750-X-only switch stack.
• 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.
• Port Aggregation Protocol (PAgP) and Link Aggregation Control Protocol (LACP) for automatic
creation of EtherChannel links.
• Forwarding of Layer 2 and Layer 3 packets at Gigabit line rate.
• Forwarding of Layer 2 and Layer 3 packets at Gigabit line rate across the switches in the stack.
• Per-port storm control for preventing broadcast, multicast, and unicast storms.
• Port blocking on forwarding unknown Layer 2 unknown unicast, multicast, and bridged broadcast
traffic.
• Protocol storm protection to control the rate of incoming protocol traffic to a switch by dropping
packets that exceed a specified ingress rate.
• Cisco Group Management Protocol (CGMP) server support and Internet Group Management
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.
–
(For IGMP devices) IGMP snooping for efficiently forwarding multimedia and multicast traffic.
• IGMP report suppression for sending only one IGMP report per multicast router query to the
multicast devices (supported only for IGMPv1 or IGMPv2 queries).
• IGMP snooping querier support to configure switch to generate periodic IGMP General Query
messages.
• IIGMP Helper to allow the switch to forward a host request to join a multicast stream to a specific
IP destination address.
• Multicast Listener Discovery (MLD) snooping to enable efficient distribution of IP Version 6 (IPv6)
multicast data to clients and routers in a switched network.
• Multicast VLAN registration (MVR) to continuously send multicast streams in a multicast VLAN
while isolating the streams from subscriber VLANs for bandwidth and security reasons.
• IGMP filtering for controlling the set of multicast groups to which hosts on a switch port can belong.
• IGMP throttling for configuring the action when the maximum number of entries is in the IGMP
forwarding table.
• IGMP leave timer for configuring the leave latency for the network.
• Switch Database Management (SDM) templates for allocating system resources to maximize
support for user-selected features.
• Introduction of a new switch database management (SDM) dual IPv4 and IPv6 template that
supports more indirect routes (supported only on switches running the IP Base or IP Services feature
set).
• Web Cache Communication Protocol (WCCP) for redirecting traffic to wide-area application
engines, for enabling content requests to be fulfilled locally, and for localizing web-traffic patterns
in the network (requires the IP Services feature set).
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