ryan niemes

IP SLA & DSCP testing

I had an occasion to do some IP SLA testing. We needed simple icmp-echo probes that would measure delay & loss. We also wanted to configure icmp-echo probes with DSCP=EF in order to measure delay & loss of our priority traffic. Interestingly enough, the DSCP values are copied in the reply packets – at leastContinue reading “IP SLA & DSCP testing”

NMS Topic : NetFlow

NetFlow began its life as a routing technique similar to Fast Switching or CEF. It has since evolved to become a useful accounting technology. Cisco NetFlow consists of three components: Network traffic analysis and collection (performed on a network element) Flow record export (network device sends the records to a ‘collector’) Flow analysis (automated orContinue reading “NMS Topic : NetFlow”

352-001

Sorry I’ve not posted anything recently: I’ve been studying intently for 352-001. It must have worked out because I passed the qualification today. First attempt. Here’s what I need to work on: QoS is definitely my weakest area. I think it’s probably good to revisit my original plan of taking and passing 642-642 I amContinue reading “352-001”

study re-think

I came to the realization after taking the demo that I should probably be changing how I’m studying for the CCDE. When I went for the CCIE I followed the path laid out from Cisco going CCNA -> CCNP -> CCIE and was satisfied with the preparation that this entailed. When I began in earnestContinue reading “study re-think”

CCDE Demo and Practical information posted!

Check out the demo here. Practical book list here.

CCDE Written Outline Topic 4 : Logging Config Changes

For “Identify best practices for configuration management (i.e. logging config changes, auditing “as running” vs “as configured,” consistent feature application, etc.)” I found some information in the IOS Configuration Fundamentals Configuration Guide. Specifically, how to configure logging of config changes.

New Cisco Forum

Cisco has recently introduced a new collaboration site: Cisco Learning Network It looks like it will be pretty helpful to those of us preparing for the CCDE.

CCDE Written Outline Topic 4 : CMIP and TMN

A few notes from the Written Outline Topic of Management: “Identify when use of CMIP is appropriate” CMIP stands for Common Management Information Protocol and was designed for OSI-based network management. It was designed as a competitor to SNMP and supports the following: The ability to perform tasks – as opposed to SNMP which canContinue reading “CCDE Written Outline Topic 4 : CMIP and TMN”

CCDE presentation from Cisco Live 2008

I did not attend Cisco Live, but someone has posted the presentation Russ White gave on the CCDE here. A few comments on the information in this presentation. Under the “why are we doing this” section they note that a lot of L3 design issues are coming up, despite being “easy”. Expect a lot ofContinue reading “CCDE presentation from Cisco Live 2008”

CCO Documentation?

CCO contains a wealth of information for those preparing for the CCIE exam. Unfortunately, that same information is not necessarily good preparation for the CCDE exam. The CCDE won’t be testing your CLI skills, or even your Cisco feature implementation skills. No, the CCDE claims to test timeless network design skills, which requires something different.Continue reading “CCO Documentation?”