The ‘Networking’ Archives
Posted November 6, 2006 by

Optimize Cisco CallManager by Using IP address, not Servername

In system>server, the default name for each server is its hostname. These names will be passed along to the phones, requiring a DNS lookup before a phone can contact CallManager.

Posted November 3, 2006 by

Configuring DHCP to work with Cisco Manager

This Tech-Recipe describes using an external DHCP server, in this case from a Windows Server 2000 or 2003 system, with Cisco Call Manager (CCM). When introducing CCM into environments with an exsiting DHCP infrastructure, problems may occur because Cisco IP phones require additional information from the DHCP server when they startup. Following the steps in […]

Posted October 11, 2006 by

Cisco: Making Long Commands Short with Aliases

The following tech-recipe explains configuring aliases for frequently used commands.

Category Cisco networking

Posted August 12, 2006 by

Disable or Turn Off CDP on Cisco Switches

Cisco Discover Protocol or CDP is a Cisco-proprietary protocol that runs on all Cisco products. CDP allows devices to learn about neighboring devices (the ones attached directly to the switch) including information about their platform, IP address, the version of IOS or other OS, VLAN membership, etc. This can be helpful information when troubleshooting network […]

Category Cisco switch

Posted July 28, 2006 by

Cisco 2950 Switch: Create a VLAN

The commands for creating a VLAN vary from one switch model to another. VLANs in a 2950 switch are configured in a manner similar to configuring an interface. This configuration is substantially different than a 2900 switch.

Category Cisco switch

Posted July 28, 2006 by

Cisco 2900 Switch: Create a VLAN

A VLAN (Virtual Local Area Network) makes a single physical switch behave like several separate switches. A host connected to one VLAN cannot communicate through the switch to a host connected to another (although a router can permit communication between VLANs, if desired). Here is how to configure a new VLAN on a 2900 switch.

Category Cisco switch

Posted July 28, 2006 by

Cisco Switch 2900/2950: Display VLAN Information

Knowing the commands to display configuration information about Virtual LANs (VLANs) is as important as knowing the commands to configure them. The commands here display information about all VLANs or a single VLAN by number or name.

Category Cisco switch

Posted July 2, 2006 by

How to Use Microsoft IAS with Cisco VPN Concentrator/ASA/PIX

VPN setup shows how to use IAS with VPN concentrator, ASA, or PIX. Basically, every VPN user connects with the same PCF file and enters into a group. When their username gets authenticated with ActiveDirectory, AD returns a group name to the CVPN/ASA/PIX, and the pix puts them in that group.

Category Cisco networking

Posted July 1, 2006 by

How to Set Up IAS to Use Radius to Authenticate a Cisco Device

This tech-recipe shows how to configure IAS for Cisco equipment using level 15 and also level 2. Thus, the information applies both to tech users and administrative users, depending on which OU applies to you.

Category Cisco networking

Posted June 19, 2006 by

Configure a Cisco Router as an NTP Server

An NTP server can provide synchronized dates and times for devices in a network. Since a router cannot be a Stratum 1 device (cannot connect to a Stratum 0 device such as a GPS clock), a router is not an accurate source of time information. If this is not important to you, then using a […]

Category Cisco router

Posted June 19, 2006 by

Configure Cisco Router to Set Time from NTP Server

Using NTP to synchronize the date and time of multiple devices makes sense even in a small network. When performing forensic analyses or troubleshooting connection problems, having consistent logging timestamps from multiple devices can save time and simplify the task.

Category Cisco router

Posted June 19, 2006 by

Set the Time on a Cisco Router Manually

Setting the internal clock in a Cisco router allows timestamping of logging information which makes troubleshooting much easier. If you do not have an NTP server running, you can set the time manually with a simple command.

Category Cisco router