From: Lars Christensen (perseusdk@gmail.com)
Date: Thu Aug 21 2008 - 04:31:10 ART
As the Frog says, the guidelines are pretty ordinary WLAN stuff.
Regarding the WiMAX (IEEE 802.16d/e), Navini was acquired by Cisco some time
ago. However since WiMAX equipment has not been shipped widely so far, most
installations are still on a trail basis. Currently WiMAX has been more or
less standardized in the IEEE802.16d (fixed WiMAX) solution, with the mobile
version (IEEE802.16e) coming up in the next few months. The equipment simply
hasn't been fully certified and fully tested between vendors.
Because of that, most WiMAX is still on a more or less theoretical basis,
but WiMAX would be a logical step in the evolution of CCIE Wireless, when
the technology (equipment) is mature.
Regarding microwave links, Cisco currently haven't any portfolio for this
kind of equipment. Today, a wide variety of vendors provide both
point-to-point and point-to-multipoint systems based on microwave radios
(Ceragon, Dragonwave, Nera, Ericsson, Cambridge Broadband, Alcatel, Nokia
and so on). However, as with WiMAX, the theory might be suitable for the
CCIE Wireless, but unless Cisco acquires any microwave radio companies such
as those mentioned above, I don't think you would see it in any labs. Since
the microwave radio systems are mostly proprietary both in management and in
interoperability, only theory might only be briefly touched.
The big difference on IEEE802.11x, IEEE802.16d/e and ordinary microwave
radios are the fact that the first two works as non-line of sight systems
and the latter does not. This creates different demands on radio planning
and typical involves different tools in order to do proper radio planning
and line of sight analysis.
The network topology is also quite different, but can be roughly substituted
with current well-known network topologies. IEEE802.16d/e can be seen as a
wireless DSL with centralized BRASs, where the microwave radios can be
viewed as either replacement for fibre cables (up to 1 Gbps [point to point
systems]) or as a sort of shared media with isolation between subscriber
units (up to 34-50 Mbps [point to multipoint systems]) with networkfacing
interfaces either as ATM VCs, Vlans or MPLS labels.
Just my point of view...
Regards,
Lars Christensen
CCIE #20292, working at a wireless SP (microwave radios and WiMAX)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Radioactive Frog
Sent: 21. august 2008 02:20
To: Joseph Brunner
Cc: Brian Dennis; ccielab@groupstudy.com
Subject: Re: CCIE Wireless - It's Alive!!!
From the guidelines or the contents of wireless CCIe looks pretty basics.
WLAN -wifi alliance stuffs.
Since Cisco has acquired a WIMAX vendor called "Naveni networks" , I was
expecting that they'd put some WIMAX stuffs in this portfolio but i can't
see any contents.
Also, WLAN is damn easy but needs more on things like "microwave radios".
Unless above areas are not covered I'd think that they are still focusing on
SME's.
End of the day, WiMAX and microwave backbone radios are the main area of
wireless.
May be they are just doing Conceptual labs/ generic stuffs of wireless.
my 0.2 cents
-Frog
Blogs and organic groups at http://www.ccie.net
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