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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
Chapter 1 Overview
Features
• DHCP server for automatic assignment of IP addresses and other DHCP options to IP hosts
• DHCP-based autoconfiguration and image update to download a specified configuration a new
image to a large number of switches
• DHCP server port-based address allocation for the preassignment of an IP address to a switch port
• Directed unicast requests to a DNS server for identifying a switch through its IP address and its
corresponding hostname and to a TFTP server for administering software upgrades from a TFTP
server
• Address Resolution Protocol (ARP) for identifying a switch through its IP address and its
corresponding MAC address
• Unicast MAC address filtering to drop packets with specific source or destination MAC addresses
• Configurable MAC address scaling that allows disabling MAC address learning on a VLAN to limit
the size of the MAC address table
• Cisco Discovery Protocol (CDP) Versions 1 and 2 for network topology discovery and mapping
between the switch and other Cisco devices on the network (supported on NNIs by default, can be
enabled on ENIs, not supported on UNIs)
• Link Layer Discovery Protocol (LLDP) and LLDP Media Endpoint Discovery (LLDP-MED) for
interoperability with third-party IP phones (supported only on NNIs or ENIs; requires the metro IP
access or metro access image)
• Support for the LLDP-MED location TLV that provides location information from the switch to the
endpoint device (requires the metro IP access or metro access image)
• Network Time Protocol (NTP) for providing a consistent time stamp to all switches from an external
source
• Cisco IOS File System (IFS) for providing a single interface to all file systems that the switch uses
• In-band management access for up to 16 simultaneous Telnet connections for multiple CLI-based
sessions over the network
• In-band management access for up to five simultaneous, encrypted Secure Shell (SSH) connections
for multiple CLI-based sessions over the network (requires the cryptographic versions of the switch
software).
• In-band management access through SNMP Versions 1, 2c, and 3 get and set requests
• Out-of-band management access through the switch console port to a directly attached terminal or
to a remote terminal through a serial connection or a modem
• User-defined command macros for creating custom switch configurations for simplified deployment
across multiple switches
• Support for metro Ethernet operation, administration, and maintenance (OAM) IEEE 802.1ag
Connectivity Fault Management (CFM), Ethernet Line Management Interface (E-LMI) on
customer-edge and provider-edge switches, and IEEE 802.3ah Ethernet OAM discovery, link
monitoring, remote fault detection, and remote loopback, and IEEE 802.3ah Ethernet OAM
discovery, link monitoring, remote fault detection, and remote loopback (requires metro IP access
or metro access image)
• Configuration replacement and rollback to replace the running configuration on a switch with any
saved Cisco IOS configuration file
• Source Specific Multicast (SSM) mapping for multicast applications to provide a mapping of source
to allowing IGMPv2 clients to utilize SSM, allowing listeners to connect to multicast sources
dynamically and reducing dependencies on the application