Cisco Hunt Group

Hunt group configuration on SIP phone & SCCP phone Ephone-hunt allow you to define a groups a phones and the […]

Cisco CME config

Cisco Unified Communication Manager Express config     A phone represents the configuration and settings of the physical IP phone […]

Actual usage of bandwidth

Assumptions The following assumptions have been made when formulating these calculations; No retries, packet losses or other events occur One […]

IP virtual-reassembly

While configuring NAT, I will sometimes see “ip virtual-reassembly” added to the NAT interfaces’ configurations: ip nat inside source list […]

Where do resets come from?

Windows SMB Reset(good part)   Starting with Windows 2000, the operating system will prefer to use port 445 for SMB […]

Route-maps (Cisco) One of the main purposes of a route-map in a Cisco router is customize traffic management beyond the boundaries […]

Router and routing security

Authentication Methods Plain text authentication Hashing authentication: MD5 and SHA   Plain text authentication Step 1. A routing update is […]

IPv6 Internet Connectivity

Methods of Assigning an IPv6 Address to a Customer Router A router residing at a customer’s location (often referred to […]