X4-A11-W-A Digi International, X4-A11-W-A Datasheet - Page 21

• Manufacturer Part Number: X4-A11-W-A
• Description: PORT XBEE 802.15.4 - WIFI802.11G
• Manufacturer: Digi International
• Series: ConnectPort™ X4r

Specifications of X4-A11-W-A

• Function: Transceiver, Xbee, Gateway
• Modulation Or Protocol: 802.15.4 Zigbee
• Frequency: 2.4GHz
• Interface: 1 USB, 1 RS-232, 1 RJ-45
• Sensitivity: -93dBm
• Power - Output: 15dBm
• Data Rate - Maximum: 54Mbps
• Voltage - Supply: 6 V ~ 30 V
• Wireless Frequency: 2.4 GHz
• Interface Type: RS-232, Ethernet, SMA
• Security: NAT, DES, 3DES, 256 bit AES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Applications: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: NS9360
• Other names: 602-1109

I n t r o d u c t i o n
Point-to-Point Protocol (PPP)
The Point-to-Point Protocol (PPP) transports multi-protocol packets over point-to-point links. PPP
encapsulates the data packet, allows the server to inform the dial-up client of its IP address (or
client to request the IP address), authenticates the exchange, negotiates multiple protocols, and
reassembles the data packet for network communication. ConnectPort X Family devices support
PPP as the connection protocol from the Digi device to the cellular IP network with NAT (Network
Address Technology).
Network Address Translation (NAT)/Port Forwarding
Network Address Translation (NAT) reduces the need for a large amount of publicly known IP
addresses by creating a separation between publicly known and privately known IP addresses.
Advanced Digi Discovery Protocol (ADDP)
The Advanced Digi Discovery Protocol (ADDP) runs on any operating system capable of sending
multicast IP packets on a network. ADDP allows the system to identify all ADDP-enabled Digi
devices attached to a network by sending out a multicast packet. The Digi devices respond to the
multicast packet and identify themselves to the client sending the multicast.
ADDP communicates with the TCP/IP stack using UDP. The TCP/IP stack should be able to
receive multicast packets and transmit datagrams on a network.
Not all Digi devices support ADDP. Access to ADDP service can be enabled or disabled, but the
network port number for ADDP cannot be changed from its default.
Generic Routing Encapsulation (GRE) Passthrough
Encapsulating Security Payload (ESP)
ESP Passthrough
Generic Routing Encapsulation (GRE) and Encapsulating Security Payload (ESP) are routing
protocols that are used to route (tunnel) various types of information between networks.
GRE applies to the encapsulation of IP datagrams tunnelled through the internet. The
encapsulation includes security, typically in the form of IPSec (IP security), and is most commonly
found in VPN (Virtual Private Network) implementation. RFC (Request For Comment) 1701 and
1702 define these standards.Similarly, ESP is used in conjunction with IPsec as a possible way of
carrying IP packets for a Virtual Private Network (VPN) setup. ESP is defined in RFC 2406.
In ESP Passthrough and GRE Passthrough, inbound IPsec ESP or GSP protocol traffic is
forwarded from to a VPN device connected to the Digi device’s Ethernet port.
Note: If an Auto-key Internet Key Exchange (IKE)-based VPN is used, UDP port 500 must also be
forwarded.
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