Cisco Catalyst 3120 Software Manual page 50

Features
• Support for the maximum packet size or maximum transmission unit (MTU) size for these types of
frames:
–
–
• IEEE 802.3x flow control on all ports (the switch does not send pause frames)
• Up to 64 Gb/s of throughput in a 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
Cisco Group Management Protocol (CGMP) server support and Internet Group Management
•
Protocol (IGMP) snooping for IGMP Versions 1, 2, and 3:
–
–
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
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 image)
Cisco Catalyst Blade Switch 3120 for HP Software Configuration Guide
1-4
Up to 9216 bytes for routed frames
Up to 9216 bytes for frames that are bridged in hardware and software through Gigabit Ethernet
ports and 10-Gigabit Ethernet ports
(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
Chapter 1 Overview
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