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– Per-port broadcast-storm control for preventing a faulty end station from
degrading overall system performance with broadcast storms
– Port Aggregation Protocol (PAgP) and Link Aggregation Control Protocol
(LACP) for automatic creation of EtherChannel links
– Internet Group Management Protocol (IGMP) snooping support to limit
flooding of IP multicast traffic
– Multicast Virtual Local Area Network (VLAN) registration (MVR) to
continuously send multicast streams in a multicast VLAN while isolating
the streams from subscriber VLANs for bandwidth and security
– IGMP filtering for controlling the set of multicast groups to which hosts
on a switch port can belong
– Protected port (private VLAN edge port) option for restricting the
forwarding of traffic to designated ports on the same switch
– Dynamic address learning for enhanced security
v Manageability
– Address Resolution Protocol (ARP) for identifying a switch through its IP
address and its corresponding MAC address
– Cisco Discovery Protocol (CDP) versions 1 and 2 for network topology
discovery and mapping between the switch and other Cisco network
devices
– Network Time Protocol (NTP) for providing a consistent time stamp to all
switches from an external source
– Directed unicast requests to a Trivial File Transfer Protocol (TFTP) server
for obtaining software upgrades from a TFTP server
– Default configuration storage in flash memory to ensure that the switch
can be connected to a network and can forward traffic with minimal user
intervention
– In-band management access through the device manager management
software Web-interface session. Prior to this release in-band management
access was provided by the Cisco Management Suite (CMS)
– In-band management access through up to 16 simultaneous Telnet
connections for multiple command-line interface (CLI)-based sessions over
the network
– In-band management access through up to five simultaneous, encrypted
Secure Shell (SSH) connections for multiple CLI-based sessions over the
network. This option is available only in the cryptographic software
image
– In-band management access through SNMP versions 1, 2c, and 3 get and
set requests
Chapter 1. Introducing the Gigabit Ethernet switch module
3
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