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6622-2211
Description
The DR-250 Is based on the very latest ADSL2/2+ platform, supporting the fastest broad-
band speeds available. ADSL2 offers considerable performance benefits over standard
ADSL, including improved range and data rate.
The DR-250 has an integral four port Ethernet switch and a 25 pin RS-232 serial inter-
face for local connectivity. Devices that support serial protocols such as Modbus RTU,
DF1, DNP3, IEC870 etc can be easily connected to the DR-250 via the serial port.
The Ethernet interfaces support Multicasting (IGMP), VLAN, SNMP, SNTP, FTP, as well as
all the standard TCP, UDP and DHCP protocols. The inbuilt RS-232 port can be used to
connect legacy serial based equipment such as PLC’s, RTU’s or IED’s. Alternatively the
internal serial port can be used as a backup connection to the remote site when used in
conjunction with a suitable Westermo Modem.
The DR-250 router has an integrated stateful inspection firewall and can support
20 IPSEC VPN (Virtual Private Network) terminations which can be secured using
standard DES, 3DES, AES encryption and MD5 or SHA1 key exchange protocols.
These features ensure that the remote sites can use the latest security technology to
resist denial of service and hacking attacks. The VPN’s can be used as a way of increasing
security and to create secure tunnels, running between sites. The VPN’s can be used to
interconnect sites effectively replacing the requirement for dedicated leased lines. A VPN
tunnel can be established between any of the DR or MR series routers. Alternatively
VPN’s can be created between the DR-250 and a third party router. An optional license
for 50 or 100 VPN terminations is also available (up to a maximum of 200).
The DR-250 can also be used for remote sites access, allowing the user to browse WEB
pages, monitor / edit PLCs or access any device connected to the LAN. The DR-250 will
allow devices on the LAN to send emails or connect to FTP servers.
Multiple routers can be used on the same LAN to provide redundancy. The routers use
VRRP (Virtual Redundant Router Protocol) to allow a seamless changeover between pri-
mary and backup routers. For complex mesh network applications the DR-250 supports
OSPF, BGP and RIP2.
The DR-250 can be supplied with a combination of UMTS 3G/HSDPA wireless card, and
or PSTN/ISDN to backup the primary ADSL should there be an interruption in service.
The wide temperature range, 10 – 28 VDC supply and DIN rail mounting ensure that the
DR-250 can be used in industrial applications without the need for modification or con-
sideration of the environmental conditions.
Features:
… ADSL / ADSL2 / ADSL2+ Compatibility
… Four port switch
… Integrated RS-232 terminal server port
… SNMP Management protocol
… Firewall
… IPsec VPN support (20 tunnels)
… VRRP+,BGP, OSPF, RIP2, GRE, L2TP
routing protocols
… DIN Rail, wall or shelf mounted
… –20˚C to +55˚C
… 10 – 28 VDC supply
… DES • 3DES • AES • SSL • SSH
(standard)
(24 pages)
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