Cisco Systems 3750E Manual De Usuario
1-9
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02
Chapter 1 Overview
Features
•
Protected port option for restricting the forwarding of traffic to designated ports on the same switch
•
Port security option for limiting and identifying MAC addresses of the stations allowed to access
the port
the port
•
VLAN aware port security option to shut down the VLAN on the port when a violation occurs,
instead of shutting down the entire port
instead of shutting down the entire port
•
Port security aging to set the aging time for secure addresses on a port
•
BPDU guard for shutting down a Port Fast-configured port when an invalid configuration occurs
•
Standard and extended IP access control lists (ACLs) for defining security policies in both
directions on routed interfaces (router ACLs) and VLANs and inbound on Layer 2 interfaces (port
ACLs)
directions on routed interfaces (router ACLs) and VLANs and inbound on Layer 2 interfaces (port
ACLs)
•
Extended MAC access control lists for defining security policies in the inbound direction on Layer 2
interfaces
interfaces
•
VLAN ACLs (VLAN maps) for providing intra-VLAN security by filtering traffic based on
information in the MAC, IP, and TCP/UDP headers
information in the MAC, IP, and TCP/UDP headers
•
Source and destination MAC-based ACLs for filtering non-IP traffic
•
IPv6 ACLs to be applied to interfaces to filter IPv6 traffic
•
DHCP snooping to filter untrusted DHCP messages between untrusted hosts and DHCP servers
•
IP source guard to restrict traffic on nonrouted interfaces by filtering traffic based on the DHCP
snooping database and IP source bindings
snooping database and IP source bindings
•
Dynamic ARP inspection to prevent malicious attacks on the switch by not relaying invalid ARP
requests and responses to other ports in the same VLAN
requests and responses to other ports in the same VLAN
•
IEEE 802.1Q tunneling so that customers with users at remote sites across a service-provider
network can keep VLANs segregated from other customers and Layer 2 protocol tunneling to ensure
that the customer’s network has complete STP, CDP, and VTP information about all users
network can keep VLANs segregated from other customers and Layer 2 protocol tunneling to ensure
that the customer’s network has complete STP, CDP, and VTP information about all users
•
Layer 2 point-to-point tunneling to facilitate the automatic creation of EtherChannels
•
Layer 2 protocol tunneling bypass feature to provide interoperability with third-party vendors
•
IEEE 802.1x port-based authentication to prevent unauthorized devices (clients) from gaining
access to the network. These features are supported:
access to the network. These features are supported:
–
Multidomain authentication (MDA) to allow both a data device and a voice device, such as an
IP phone (Cisco or non-Cisco), to independently authenticate on the same IEEE 802.1x-enabled
switch port
IP phone (Cisco or non-Cisco), to independently authenticate on the same IEEE 802.1x-enabled
switch port
–
VLAN assignment for restricting IEEE 802.1x-authenticated users to a specified VLAN
–
Port security for controlling access to IEEE 802.1x ports
–
Voice VLAN to permit a Cisco IP Phone to access the voice VLAN regardless of the authorized
or unauthorized state of the port
or unauthorized state of the port
–
IP phone detection enhancement to detect and recognize a Cisco IP phone
–
Guest VLAN to provide limited services to non-IEEE 802.1x-compliant users
–
Restricted VLAN to provide limited services to users who are IEEE 802.1x compliant, but do
not have the credentials to authenticate via the standard IEEE 802.1x processes
not have the credentials to authenticate via the standard IEEE 802.1x processes
–
IEEE 802.1x accounting to track network usage
–
IEEE 802.1x with wake-on-LAN to allow dormant PCs to be powered on based on the receipt
of a specific Ethernet frame
of a specific Ethernet frame