User's Manual

Chapter 11: Troubleshooting
Registration and connectivity troubleshooting
Page VIII
Term
Definition
HTTPS
Hypertext Transfer Protocol Secure (HTTPS)
ICMP
Internet Control Message Protocols defined in RFC 792, used to
identify Internet Protocol (IP)-level problems and to allow IP links to
be tested. See http://www.faqs.org/rfcs/rfc792.html.
Integrated
The 450 Platform Family Integrated Radio solution provides
integrated antenna..
IP
Internet Protocol defined in RFC 791. The Network Layer in the
TCP/IP protocol stack. This protocol is applied to addressing,
routing, and delivering, and re-assembling data packets into the
Data Link layer of the protocol stack. See
http://www.faqs.org/rfcs/rfc791.html.
IP Address
32-bit binary number that identifies a network element by both
network and host. See also Subnet Mask.
IPv4
Traditional version of Internet Protocol, which defines 32-bit fields
for data transmission.
ISM
Industrial, Scientific, and Medical Equipment radio frequency band,
in the 900-MHz, 2.4-GHz, and 5.8-GHz ranges.
L2TP over IPSec
Level 2 Tunneling Protocol over IP Security. One of several virtual
private network (VPN) implementation schemes. Regardless of
whether Subscriber Modules have the Network Address Translation
feature (NAT) enabled, they support VPNs that are based on this
protocol.
Late Collision Field
This field displays how many late collisions occurred on the
Ethernet controller. A normal collision occurs during the first 512
bits of the frame transmission. A collision that occurs after the first
512 bits is considered a late collision. A late collision is a serious
network problem because the frame being transmitted is discarded.
A late collision is most commonly caused by a mismatch between
duplex configurations at the ends of a link segment.
Line of Sight
Wireless path (not simply visual path) direct from module to
module. The path that results provides both ideal aim and an ideal
Fresnel zone.
LNK/5
Furthest left LED in the module. In the operating mode, this LED is
continuously lit when the Ethernet link is present. In the aiming
mode for a Subscriber Module, this LED is part of a bar graph that
indicates the quality of the RF link.
Logical Unit ID
Final octet of the 4-octet IP address of the module.