Specifications

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Catalyst 2970 Switch Software Configuration Guide
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Chapter 1 Overview
Features
– Automatic discovery of candidate switches and creation of clusters of up to 16 switches that can
be managed through a single IP address.
– Extended discovery of cluster candidates that are not directly connected to the command switch.
Performance Features
• Autosensing of port speed and autonegotiation of duplex mode on all switch ports for optimizing
bandwidth
• Automatic-medium-dependent interface crossover (Auto-MDIX) capability on 10/100/1000 Mbps
interfaces that enables the interface to automatically detect the required cable connection type
(straight through or crossover) and configure the connection appropriately
• IEEE 802.3X flow control on all ports (the switch does not send pause frames)
• EtherChannel for enhanced fault tolerance and for providing up to 8 Gbps (Gigabit EtherChannel)
or 800 Mbps (Fast EtherChannel) full duplex of bandwidth between switches, routers, and servers
• Port Aggregation Protocol (PAgP) and Link Aggregation Control Protocol (LACP) for automatic
creation of EtherChannel links
• Forwarding of Layer 2 packets at Gigabit line rate
• 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
• Internet Group Management Protocol (IGMP) snooping for IGMP versions 1, 2, and 3 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)
• 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
Management Options
• CMS—CMS is a graphical user interface that can be launched from anywhere in your network
through a web browser such as Netscape Communicator or Microsoft Internet Explorer. CMS is
already installed on the switch. For more information about CMS, see Chapter 3, “Getting Started
with CMS.”
• CLI—The Cisco IOS CLI software is enhanced to support desktop- and multilayer-switching
features. You can access the CLI either by connecting your management station directly to the
switch console port or by using Telnet from a remote management station. For more information
about the CLI, see Chapter 2, “Using the Command-Line Interface.”
• SNMP—SNMP management applications such as CiscoWorks2000 LAN Management Suite (LMS)
and HP OpenView. You can manage from an SNMP-compatible management station that is running
platforms such as HP OpenView or SunNet Manager. The switch supports a comprehensive set of
MIB extensions and four remote monitoring (RMON) groups. For more information about using
SNMP, see Chapter 25, “Configuring SNMP.”