Chapter 1 Overview; Performance Features - Cisco 3845 - Security Bundle Router Software Manual

Features
Features
Some features noted in this chapter are available only on the cryptographic (that is, supports encryption)
versions of the switch software image. You must obtain authorization to use this feature and to download
the cryptographic version of the software from Cisco.com. Other features require a specific license. For
more information, see the release notes for this release.
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Performance Features

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Cisco ME 3800X and 3600X Switch Software Configuration Guide
1-2
Performance Features, page 1-2
Management Options, page 1-3
Manageability Features, page 1-3
Availability Features, page 1-5
VLAN Features, page 1-5
Security Features, page 1-6
Quality of Service and Class of Service Features, page 1-7
Layer 2 Virtual Private Network Services, page 1-7
Layer 3 Features, page 1-8
Layer 3 VPN Services, page 1-8
Monitoring Features, page 1-9
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 interfaces that
enables the interface to automatically detect the required cable connection type (straight-through or
crossover) and to configure the connection appropriately
Support for 9800 byte frames on routed ports and switch ports at all speeds: 10/100/1000/10000
Mb/s.
IEEE 802.3x flow control on all ports (the switch does not send pause frames)
EtherChannel for enhanced fault tolerance
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 and 10 Gigagit line rates
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 on
switchports 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
Chapter 1 Overview
OL-23400-01