Routing functions
NTP client and SNTP server, automatic adjustment for daylight-saving timeNTP
Policy-based routing based on routing tags. Based on firewall rules, certain data types are marked for specific routing, e.g. to particular remote
sites or lines
Policy-based routing
Dynamic routing with RIPv2. Learning and propagating routes; separate settings for LAN and WAN. Extended RIPv2 including HopCount, Poisoned
Reverse, Triggered Update for LAN (acc. to RFC 2453) and WAN (acc. to RFC 2091) as well as filter options for propagation of routes. Definition
of RIP sources with wildcards
Dynamic routing
DHCPv6 client, DHCPv6 server, DHCPv6 relay, stateless- and stateful mode, IPv6 address (IA_NA), prefix delegation (IA_PD), DHCPv6 reconfigure
(server and client)
DHCPv6
Layer 2 functions
VLAN ID definable per interface and routing context (4,094 IDs) IEEE 802.1qVLAN
Packets sent in response to LCOS service requests (e.g. for Telnet, SSH, SNTP, SMTP, HTTP(S), SNMP, etc.) via Ethernet can be routed directly to the
requesting station (default) or to a target determined by ARP lookup
ARP lookup
Automatic discovery of network topology in layer 2 networks (Link Layer Discover Protocol)LLDP
COM port server
COM-port server for DIN and USB interfaces. For multiple serial devices connected to it, the server also manages its own virtual COM ports via
Telnet (RFC 2217) for remote maintenance (works with popular virtual COM-port drivers compliant with RFC 2217). Switchable newline conversion
and alternative binary mode. TCP keepalive according to RFC 1122 with configurable keepalive interval, retransmission timeout and retries
COM port forwarding
USB print server
Host port for connecting USB printers via RAW-IP and LPD; bi-directional data exchange is possiblePrint server (USB 2.0)
LAN protocols
ARP, proxy ARP, BOOTP, LANCAPI, DHCP, DNS, HTTP, HTTPS, IP, ICMP, NTP/SNTP, NetBIOS, PPPoE (server), RADIUS, RIP-1, RIP-2, RTP, SIP, SNMP,
TCP, TFTP, UDP, VRRP
IP
NDP, stateless address autoconfiguration (SLAAC), stateful address autoconfiguration (with DHCPv6), router advertisements, ICMPv6, DHCPv6,
DNS, HTTP, HTTPS, PPPoE, TCP, UDP
IPv6
IPv6
IPv4/IPv6 dual stackDual Stack
WEBconfig, HTTP, HTTPS, SSH, Telnet, DNS, TFTP, FirewallIPv6 compatible LCOS applications
WAN protocols
PPPoE, Multi-PPPoE, ML-PPP, PPTP (PAC or PNS) and IPoE (with or without DHCP), RIP-1, RIP-2, VLAN, IPEthernet
1TR6, DSS1 (Euro-ISDN), PPP, X75, HDLC, ML-PPP, V.110/GSM/HSCSDISDN
IPv6 over PPP (IPv6 and IPv4/IPv6 dual stack session), IPoE (autoconfiguration, DHCPv6 or static)IPv6
6to4, 6in4, 6rd (static and via DHCP)Tunneling protocols (IPv4/IPv6)
WAN operating mode
ADSL1, ADSL2 or ADSL2+ with external ADSL2+ modemxDSL (ext. modem)
UMTS/HSDPA with external module at the USB interfaceUMTS/HSDPA* (ext. module)
ISDN data or voice usage via internal ISDN interfaceISDN
Analog or GPRS operation via serial interfaceAnalog/GPRS (ext. modem)
A UMTS USB modem is not supplied. Supported UMTS USB modems at www.lancom.eu/umts-support*) Note:
Interfaces
10/100/1000 Mbps Gigabit EthernetWAN: Ethernet
4 individual 10/100/1000 Mbps Ethernet ports; up to 3 ports can be operated as additional WAN ports with load balancing. Ethernet ports can be
electrically disabled within LCOS configuration. The ports support energy saving according to IEEE 802.3az
Ethernet ports
Each Ethernet port can be freely configured (LAN, DMZ, WAN, monitor port, off). LAN ports can be operated as a switch or separately. Additionally,
external DSL modems or termination routers can be operated as a WAN port with load balancing and policy-based routing. DMZ ports can be
operated with their own IP address range without NAT
Port configuration
LANCOM 1781EW+
Features as of: LCOS 8.84
