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Extending VoIP to Wireless LANs
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Taping Date: March 27, 2008
Air Date: May 1, 2008

Agenda:
Segment 1: Technical Challenges and Business Drivers
Segment 2: How ready is your Wireless? Guest: Larry Ross, TME WNBU
Segment 3: Mobile Voice Potential with Mike Coffin from VoiceCon 2008
Segment 4: Voice over Wireless Deployment Reality and the Wireless Control System (WCS)

Six Challenges to doing Voice over Wireless LAN:
1. Quality of Service
2. Wireless is a Shared Resource
3. Roaming and Re-Authentication
4. Increased Support Requirements
5. End User expectations
6. Clients are evolving

Two Analysis Tools

• Cisco Spectrum Analyzer (formerly Cognio)
• Air Magnet Laptop Analyzer

Training Opportunity with Global Knowledge (class designed by our two guests Mike Coffin & Larry Ross)

Links:
Wireless VoIP on the Cisco Site
Cisco Unified Wireless IP Phone 7921G
802.11n - Ready for Business
Cisco Certified Wireless Training
Are you a Cisco Partner selling Wireless Solutions? Join the Wireless Partners Collaborative Workspace!
Nokia handheld design guide at Cisco
Nokia Design Guide including the intellisync client

Non-TechWiseTV Video Programs:
Extending Unified Communications to Mobile Workers (Video overview of Cisco Mobile Unified Communications applications along with a step-by-step approach of how to mobilize Cisco Unified Communications for mobile workers on campus or on the road).

Mobility TV: How to successfully Design, Deploy, Manage and Troubleshoot Voice over WLAN
On Demand Now: Learn the critical design and deployment factors that must be considered when adding voice communications over wireless networks to help make sure end-user satisfaction, a smooth and easy implementation, and air-tight security.

Download Valuable Documents:
Voice over Wireless at a Glance
Design Principles for Voice over WLAN
Is your Wireless LAN ready for Voice?
Voice over WLAN 4.1 Validated Design Guide


Mac Find Script as mentioned on the show:

#!/usr/bin/perl
my %cards;
my %ips;
open(ARP,"arp -an|") || die "Couldn't open arp table: $!\n";
print "Put on the cornbread while I look up the OUIs.";
while(<ARP>) {
chomp;
my $addr = $_;
my $ip = $_;
$addr =~ s/.* ([\d\w]+:[\d\w]+:[\d\w]+):.*/$1/;
$addr =~ s/\b([\d\w])\b/0$1/g;
$addr =~ s/:/-/g;
next unless $addr =~ /..-..-../;
$ip =~ s/.*?(\d+\.\d+\.\d+\.\d+).*/$1/;
print ".";
$cards{$addr}||=`curl -sd 'x=$addr' http://standards.ieee.org/cgi-bin/ouisearch`;
($cards{$addr} =~ /Sorry!/) && ($cards{$addr} = "Unknown OUI: $addr");
$ips{$ip} = $addr;
}
print "\n";
for(keys(%ips)) {
$cards{$ips{$_}} =~ s/.*.hex.\s+([\w\s\,\.]+)\n.*/$1/s;
print "$_ -> $cards{$ips{$_}}\n";
}

Finding Rogue AP's
- Download a copy of NMAP, SScan or your favorite port scanned
- Inform your security folks you are scanning for rogue AP with a port scanner (if applicable)
- Scan your internal RFC 1918 IP address space for port 80
Normally a hit on this will be a rogue