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Catalyst 3750 MetroSwitch Software Configuration Guide
78-15870-01
Chapter 1 Overview
Features
Layer 3 VPN Services
• Support for MPLS VPNs provides the capability to deploy and administer scalable Layer 3 VPN
services to business customers. Each VPN is associated with one or more VPN routing/forwarding
(VRF) instances that include routing and forwarding tables and rules that define the VPN
membership. (MPLS VPNs are supported only on ES ports.)
• Multiple VPN multi-VRF instances in customer edge (CE) devices to allow service providers to
support multiple VPNs and to overlap IP addresses between VPNs.
Security Features
Note The Kerberos feature listed in this section is available only on the cryptographic version of the switch
software image.
• Password-protected access (read-only and read-write access) to management interfaces for
protection against unauthorized configuration changes
• Multilevel security for a choice of security level, notification, and resulting actions
• Static MAC addressing for ensuring security
• 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
• 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)
• Extended MAC access control lists for defining security policies in the inbound direction on Layer 2
interfaces
• VLAN ACLs (VLAN maps) for providing intra-VLAN security by filtering traffic based on
information in the MAC, IP, and TCP/User Datagram Protocol (UDP) headers
• Source and destination MAC-based ACLs for filtering non-IP traffic
• IEEE 802.1x port-based authentication to prevent unauthorized devices (clients) from gaining
access to the network
• TACACS+, a proprietary feature for managing network security through a TACACS server
• RADIUS for verifying the identity of, granting access to, and tracking the actions of remote users
through authentication, authorization, and accounting (AAA) services
• Kerberos security system to authenticate requests for network resources by using a trusted third
party (requires the cryptographic [that is, supports encryption] version of the switch software image)
• Password recovery disable capability to protect access to switches at customer sites
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