As data rates increase in the Enterprise LAN 10/100 or Fast Ethernet is quickly being moved out and replaced with Gigbit switching. Some manufacturers and lines do not even offer a 10/100 product. Below is a quick overview of the Gigabit offerings available today from manufacturers Catalyst distributes.
Increasing bandwidth is a constant battle faced by every IT department. What happens when a high capacity server is hitting the limits of a single Gigabit link. What happens when 10G is not an option, but 1G is not enough. Simply connecting another cable is not the answer. The result will be a total loss of the network or a nice workout for your spanning tree configuration. The answer comes from the 802.3ad specification, or Ling Aggregation, LAG for short.
QoS is in higher demand as networks grow and complexity of traffic patterns increase. Large file transfers can clog networks. High Internet usage can bog down connections with useless traffic from social network sites or sites like YouTube. Properly configured QoS or Quality of Service, can help to remove the negative effect of traffic patterns. Extreme Networks is well known for excellent QoS. Deep queue buffers and robust algorithms can allow for 100 percent utilization of your data switches. Keep reading for a quick QoS configuration for Avaya (and other vendors) VoIP.
Scenario: DHCP is needed to assign IP phones IP address. The ports the phones will be plugged into will connect the IP phone and the PC, which will be plugged in to the back of the IP phone.
DEFCON 16 and Black Hat are security centric conferences recently held in Las Vegas where Aruba Networks provided the wireless infrastructure. In a self descriptive FAQ of the environment to be expected (quoting from the FAQ site)
Q: Is there a free network at DEFCON?
A: Yes. It would be fair to describe the network as ‘hostile’. It has been described as ‘the worlds most hostile network’, but such descriptions are just attempts at flattery. It is recommended that if you want to connect to the DEFCON network pretend that you are sharing out your entire hard drive to 5,000 hackers. You may want to bring a ‘clean’ computer that you don’t mind being infected/hacked/etc…
In light of the environment Aruba reported some statistics:
The Avaya Gigabit Ethernet Adapter for 4600 series IP Phones (p/n:700416985) has been a popular product lately. The usage is a bit confusing due to a less than adequate manual that accompanies the product. Lets review it’s purpose and how it can be implemented.