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Spostiamoci su Not-Wireless perchè di wireless questa discussione ha
ben poco.... :-) <br>
La rigiro ancora qui in ML Wireless per chi non è iscritto ancora e
volesse continuare a seguire la discussione...<br>
<br>
Il 4/21/12 7:53 PM, Claudio ha scritto:
<blockquote
cite="mid:CADDB2t4KouR3mEWA7XWx-qGUKctLHrCTmoaYAqu+LAnf-MRpnQ@mail.gmail.com"
type="cite">
<pre wrap="">
non per aprire un flame (o meglio per chiuderne uno sul nascere) ma
[citation needed] e in diversi punti pure.
</pre>
</blockquote>
....che Cisco ha avuto un ruolo fondamentale (come molte altre
aziende) per lo sviluppo di Internet e del Networking in generale è
risaputo...Non è stata sicuramente l'unica ma sicuramente ha
contribuito in maniera decisiva (provate a dimostrare il contrario
piuttosto...) ;-)<br>
<br>
Dette queste chiacchiere passiamo ai fatti.....<br>
<br>
Solo alcune annotazioni (e non di certo inventate da me ;-) ):<br>
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Cisco is a member of more than 70 world standards bodies and forums.<br>
Cisco employees hold more than 30 leadership positions (for example,
board members, chairs) in IETF, IEEE, ITU, Wi-Fi Alliance, and other
important standards organizations.<br>
Cisco contributions include almost 300 RFC authors and 800 RFCs
(source: <a class="moz-txt-link-abbreviated" href="http://www.arkko.com/tools/stats/index.html">www.arkko.com/tools/stats/index.html</a>).<br>
Cisco representation at IETF meetings is, historically, more than
twice that of the next vendor, and the difference increases
exponentially over other vendors.<br>
Cisco received the ITU-T Commemorative Award for outstanding
next-generation network (NGN) contributions.<br>
<br>
Vi posto solo alcuni <b>piccoli</b> <b>contributi</b> che Cisco ha
dato al Networking....<br>
<br>
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<b>Network Connectivity: IEEE 802.3u Fast Ethernet</b><br>
Introduced in 1995, Fast Ethernet increased Ethernet LAN speeds from
10 Mb/s to 100 Mb/s. Cisco’s Fast Ethernet technology served as the
basis for the IEEE 802.3u standard. Further Cisco contributions
helped form Gigabit Ethernet, 10 Gigabit Ethernet, and now 40/100
Gigabit Ethernet, making sure that Ethernet will continue to serve
as the principal connection for the vast majority of networking and
networked devices.<br>
<br>
<b>IP Routing (Exterior): IETF Border Gateway Protocol</b><br>
The Border Gateway Protocol (BGP) is the core routing protocol of
the Internet, maintaining a table of IP networks and making routing
decisions based on path, network policies, and/or rule sets. BGP
allows the Internet to function as a truly decentralized system.
Cisco’s Internet Gateway Protocol (IGP) served as the basis for the
BGP standard.<br>
<br>
<b>LAN Switching: IEEE 802.3ad “EtherChannel”</b><br>
Developed in the early 1990s, Cisco’s EtherChannel is a link
aggregation technology that allows operators to group several
physical Ethernet links to create one logical Ethernet link for the
purpose of providing fault tolerance and bundled high-speed
connections among switches, routers, and servers. Cisco’s
EtherChannel served as the basis for the 802.3ad standard.<br>
<br>
<b>IP Traffic Direction: IETF Multiprotocol Label Switching</b><br>
Multiprotocol Label Switching (MPLS) is a highly scalable, Data Link
Layer–independent delivery mechanism that directs and carries data
from one network node to the next. Standards work commenced in 1996,
and large-scale deployments of MPLS began in 2001. Cisco’s Tag
Switching technology (first shipped in 1997) developed into Label
Switching in collaboration with IBM Research. Label Switching then
drove the final MPLS standard: a standard that plays an
ever-increasing role in both service provider and large enterprise
networks. Owing to this vital role MPLS plays within public and
private networks, Cisco has released a number of books promoting the
effective and secure use of MPLS.<br>
<br>
<b>Wireless LAN: IEEE Control and Provisioning of Wireless Access
Points</b><br>
Control and Provisioning of Wireless Access Points (CAPWAP)
simplifies the configuring, monitoring, and troubleshooting of large
wireless LANs (WLANs) through consolidated control. CAPWAP also
allows network administrators to more closely monitor and analyze
WLANs. Cisco’s Lightweight Access Point Protocol (LWAPP) served as
the basis for the CAPWAP standard.<br>
<br>
<b>Wireless WAN: IEEE 802.16 WiMAX</b><br>
WiMAX standards are established by the IEEE 802.16 working group and
WiMAX products are certified by the WiMAX Forum. Cisco contributed
primary technologies to the IEEE 802.16 standard and continues to
work on the next-generation 802.16m standard. Additionally, Cisco
also introduced important concepts that are now mandatory in WiMAX
Forum product requirements and certification tests.<br>
<br>
<b>Network Security: IEEE 802.1Q Virtual LANs</b><br>
A virtual LAN (VLAN) is a logical group of networked devices that
communicate as if they were attached to a broadcast domain,
regardless of their physical location. VLANs provide for greater
scalability, heightened security, and improved network management.
Cisco’s Inter-Switch Link (ISL) preceded the 802.1Q standards and
contributed to the development and later adoption of 802.1Q.<br>
<br>
<b>Network Power: IEEE 802.3af Power over Ethernet</b><br>
Power over Ethernet (PoE) technology safely transfers up to 15.4
watts of DC power—alongside traditional Ethernet traffic—to remote
devices over Category 5 cable. Cisco first shipped PoE-capable
switch ports in 2000 and laid the groundwork for the 802.3af PoE
standard that was ratified in 2003. Cisco was the first vendor to
ship products based on the 802.3af standard.<br>
<br>
<br>
E potrei continuare per un bel po se volete..... ;-)<br>
<br>
Quindi se ora abbiamo una piccola rete cittadina in cui tutti siamo
collegati in wireless e possiamo collegarci tra di noi e portare su
un singolo cavo di rame non solo dati ma anche l'elettricità per
accendere l'antennina sicuramente una piccola parte di tutto questo
la dobbiamo anche a Cisco...(naturalmente nulla togliendo a chi ha
montato il tutto ;-) )<br>
<br>
@MenteLibera....permettimi di dirti una cosa senza offesa..... il
problema di Cisco sai qual'è? Sono proprio gli "adepti" che parlano
come te...che sparano per "sentito dire" (almeno è questa
l'impressione che hai dato!) senza dare uno straccio di prova e
uscirsene dalla discussione dicendo "...poi come si dice cisco
indottrina bene i suoi adepti....." ...!!!!<br>
<br>
My 2 Cents....<br>
<pre class="moz-signature" cols="72">--
Stefano Pilla
pub 2048R/7A14FB6C 2009-10-05 [expires: 2014-10-04]
Key fingerprint:
6EB6 E497 B431 C251 A75C
49D9 0B7B 2E86 7A14 FB6C
Phone: +39 345 78 98 246
Cisco CCNA/CCDA/CCNP: CSCO11667427
Cisco Certified Academy Instructor (CCAI)
Web: <a class="moz-txt-link-freetext" href="http://www.stefanopilla.it">http://www.stefanopilla.it</a> | <a class="moz-txt-link-freetext" href="http://www.clorofillaroma.it">http://www.clorofillaroma.it</a>
E-mail: me[at]stefanopilla.it | <a class="moz-txt-link-abbreviated" href="mailto:stefano.pilla@clorofillaroma.it">stefano.pilla@clorofillaroma.it</a></pre>
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