What is VoIP?

Fast PBX Business Phone Solutions

VoIP, or Voice Over Internet Protocol, is a system which allows the send of real-time audio communication over IP networks, i.e. the Internet. In a traditional telephone system, calls are directed through an in-house PBX system. With VoIP, calls are made through TCP/IP using routers and networks. So, instead of using regular telephone lines, VoIP uses the existing network and the internet to place and receive calls.

Benefits

Using the power of the Internet, VoIP easily does things that are difficult to impossible with traditional phone networks. Providing that the Internet connection is of good quality, calls are much clearer than the traditional phone call and will  allows multiple calls to be received at a time without having to tie up the lines as busy. In addition, you can have multiple phones connected to the same network, even if it isn’t physically in the same location. So, it can make…

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FC Security for CCIE DC – FC-SP / DHCHAP

Mind Safe

Fibre Channel Security Protocol (FC-SP) provides the capabilities for Diffie-Hellman Challenge Handshake Authentication Protocol (DHCHAP) to authenticate switches and/or hosts attempting to enter the fabric. The terms FC-SP and DHCHAP are used interchangeably. Unlike most FC feature, DHCHAP is not configured on a per-VSAN basis.

All things in this post can be found in the configuration guide:
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/6_2/configuration/guides/security/nx-os/sec_cli_6-x/fcspdh.html

Steps involved to configure FC-SP:

1. Enable FCSP/DHCHAP
2. (Optional) Configure the hash algorithm and Diffie-Hellamn groups
3. Configure the DHCHAP password for the local switch
4. Configure the DHCHAP password for the remote switches/devices in the fabric
5. Configure and enable DHCHAP on interfaces
_a. Modes
_b. Reauthentication
6. Verify

fcsp-dhchap-topology

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