Cisco’s SLA features, available in IOS other than IP Base, allow modification of the routing table based on a monitored item. In this example, we’ll monitor an Internet address, and change the default route if that address is unreachable.

By default, Cisco Unity Unified messages don’t work in Blackberry or windows mobile devices. Here’s how to make it work.

Two routers are connected to the network and the two default gateways do not provide a completely reliable path in the event of an outage. Although the ITA has some newer IP hosts that support dynamic router discovery with the ICMP Router Discovery Protocol (IRDP), it mostly has a large class of legacy host implementations […]

This is a BASIC explanation of Standard ACL’s that SHOULD be fairly easy to understand and span the spectrum of most Cisco routers.

Transfer a caller on a Cisco CME (CallManager Express) to a voicemail box on a CUE (Cisco Unity Express) system.

In PIX 6.3 and later, support for PPTP through the PIX has been added.

Daylights Savings Time workaround for Cisco IOS devices. Of course, updating the IOS to a DST-corrected version will eliminate the need for this fix, but…

This article is an outline of how to set up logging on your PIX, viewable to a syslog or through the show log statement. This information is targeted toward the more recent versions of PIX IOS, the older versions run along the same concept but have some different commands.

Just some info on loopback virtual interfaces and their uses.

You’ve got two Cisco routers, and two links to a remote site. How do you make your hosts use the backup when needed? One method is HSRP.

Running debug commands can bring a busy router to a crawl. Not sending the output to the console can help. This tech-recipe describes turning off console debugging output and techniques for viewing debug information in a router-friendly way.

A couple of new commands to make life easier with IP Telephony using Cisco CallManager and CallManager Express.