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Catalyst 3560 Switch Software Configuration Guide
OL-8553-06
Chapter 1 Overview
Features
• Port blocking on forwarding unknown Layer 2 unknown unicast, multicast, and bridged broadcast
traffic
• Cisco Group Management Protocol (CGMP) server support and Internet Group Management
Protocol (IGMP) snooping for IGMP Versions
1, 2, and 3:
–
(For CGMP devices) CGMP for limiting multicast traffic to specified end stations and reducing
overall network traffic
–
(For IGMP devices) IGMP snooping for 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
• IGMP helper to allow the switch to forward a host request to join a multicast stream to a specific IP
destination address
• 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
• Web Cache Communication Protocol (WCCP) for redirecting traffic to local 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 image)
• Cisco IOS IP Service Level Agreements (SLAs), a part of Cisco IOS software that uses active traffic
monitoring for measuring network performance.
• Configurable small-frame arrival threshold to prevent storm control when small frames (64 bytes or
less) arrive on an interface at a specified rate (the threshold)
• Flex Link Multicast Fast Convergence to reduce the multicast traffic convergence time after a Flex
Link failure
• RADIUS server load balancing to allow access and authentication requests to be distributed evenly
across a server group.
Management Options
• An embedded device manager—The device manager is a GUI that is integrated in the software
image. You use it to configure and to monitor a single switch. For information about launching the
device manager, see the getting started guide. For more information about the device manager, see the
switch online help.
• Network Assistant—Network Assistant is a network management application that can be
downloaded from Cisco.com. You use it to manage a single switch, a cluster of switches, or a
community of devices. For more information about Network Assistant, see Getting Started with
Cisco Network Assistant, available on Cisco.com.