Lee:
The way you phrased this makes it seem that you are running the
smoke-heads, and maybe the whole fire alarm system over the building's
LAN. If that it the case, and the heads have fixed IP addresses that
overlap the DHCP address space on the LAN, that could cause this
trouble. This has nothing to do with the WiFi/RF side of anything - it
seems more likely to be simple IP conflict.
That said, installing a fire alarm system using the building LAN, rather
than having a fully separate wired setup, seems to be a strange
installation approach. Putting security cameras and such on a building
LAN is pretty common, but I would have though that a fire alarm would be
a totally separated and secure system
Howie Frisch
[EMAIL PROTECTED]
Lee Badman wrote:
Wondering if anyone has ever run into a similiar problem:
I'm dealing with a contractor who is claiming that our Cisco 1/g 1130s
are interfering with the wired fire alarm system- putting individual
smoke-heads into trouble, causing newly added devices to not be
addressable, etc. He has no basis and can offer no proof, but is making
lot's of noise about his perception.
Knowing that there are thousands of buildings around the country and
world with RF from WLAN, cellular, radio stations, etc. and fire systems
getting along nicely, my first take is that this guy is grasping at
straws. If I stretch my mind, the best I can come up with is his wiring
is acting like an antenna, building up a voltage that shouldn't be
present, and thus maybe creating a condition that points to improper
grounding of his stuff- but I think even that is a reach.
Any thoughts? Have yet to do any real onsite t-shooting with him yet.
Regards-
Lee
Lee Badman
Network Engineer
CWNA, CWSP
Information Technology and Services
Syracuse University
(315) 443-3003
[EMAIL PROTECTED]
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