Chapter 7. Troubleshooting
Individual BreadCrumbs
Problem
Resolution
When the BreadCrumb is powered on, its LED
remains solid red, and devices cannot
communicate with the BreadCrumb.
Ensure that radio cards are properly seated in their
PCMCIA slots. If problem persists, re-flash
BreadCrumb or contact customer service.
When the BreadCrumb is powered on, its LED
blinks red, and devices cannot communicate with
the BreadCrumb.
The BreadCrumb has detected that it contains both
SecNet and Non-SecNet radios. Ensure that all
radios are SecNet or Non-SecNet and reboot
BreadCrumb.
Table 7-1. Individual BreadCrumb Issues
The BreadCrumb Wireless Network
Sporadic Network Connectivity
Problem
Resolution
As a BreadCrumb device’s battery approaches
exhaustion, network connectivity will become
sporadic for the BreadCrumb device and its
associated wireless clients.
Monitory battery usage and charge/replace
batteries as necessary.
Light precipitation or fog beginning after initial
deployment of the BCWN can result in sudden
sporadic network connectivity for BreadCrumb
devices and their associated wireless clients.
Increase the density of the network by adding
more BreadCrumb devices or by moving existing
BreadCrumbs closer together.
As a wireless client moves around through the
coverage area, LOS to the BreadCrumb device can
become obstructed resulting in sporadic network
connectivity for this wireless client.
Train users to maintain LOS to known
BreadCrumb device locations. Place BreadCrumb
devices strategically to ensure coverage of areas
through which users are expected to move.
A wireless client that moves beyond the range of
the BCWN will experience sporadic, and
eventually complete, loss of network connectivity.
Drop more BreadCrumb devices as necessary to
increase range.
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