I had an article a few weeks ago about the Cisco CSM, which is a load-balancer module for the 6500 series switches. This thing is a pretty good device, but monitoring the connections to each VIP and RIP is not very straightforward. If you have an SNMP monitoring system like Cacti or MRTG, you...
Monthly Archives: October 2007
Object Tracking and HSRP
We’ve done some tracking with HSRP in other articles, but there are lots and lots of ways to use object tracking on an HSRP device. In our example network, we tracked the interface, and, if it went down, we decremented the standby priority. What if just the line protocol goes down? How about if...
Intro to Policy Routing
I like layer-3 switches. They give some great flexibility and bang-for-the buck, but most people overlook one issue with these things that can cause security problems. Most people configure the VLANs, put an IP on the VLAN interfaces, and put it in production, but the packets don’t actually flow the way they think they...
Getting Started with the Cisco CSM
Cisco’s Content Switching Module (CSM) is an application accelerator. Or is it an application networking service module? I hate those fancy buzzwords — it’s a load balancer. It’s a module for the 6500 series switches that lets you load balance services in any VLAN and can also be set up for high-availability. I could...
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