Cisco me 3400 Guide De Logiciel

DHCP relay for forwarding User Datagram Protocol (UDP) broadcasts, including IP address 
requests, from DHCP clients

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 image 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 the 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