Archive for May, 2008

Problems with automatic backup via SCP during kron job

Sunday, May 25th, 2008 Posted in Cisco, IOS | No Comments »

Stumbled across a problem with certain versions of Cisco IOS ranging from 12.2 and 12.4 running an automatic backup every night by using SCP and kron. A month or so ... Read more..

Strange ASA to ASA IPsec problem

Tuesday, May 20th, 2008 Posted in ASA/Pix, Cisco | No Comments »

So today a customer was upgrading a Pix to an ASA and also changing their external IP address so we needed to update the tunnel information and a few commands on ... Read more..

DiffServ QoS Model

Thursday, May 15th, 2008 Posted in Cisco, QoS | No Comments »

Out of the three QoS models Differentiated Services (DiffServ) is the most used due to its scalability and ability to classify multiple levels of service.  The only real drawbacks of DiffServ ... Read more..

IntServ QoS Model - Advantages and disadvantages

Saturday, May 10th, 2008 Posted in Cisco, QoS | No Comments »

The IntServ, also known as 'Hard QoS', model was introduced to guarantee predictable network behavior for applications that require consistent, dedicated bandwidth for acceptable quality. Because IntServ reserves the bandwidth for ... Read more..

Qos acronyms part duex

Saturday, May 10th, 2008 Posted in Cisco, QoS | No Comments »

EF - Expedited Forwarding AF - Assured Forwarding CQ - Custom Queueing PQ  - Priority Queueing RTP - Real-Time Transport Protocol FIFO - First In First Out CEF - Cisco Express Forwarding CDP - Cisco Discovery Protocol DE ... Read more..

Disable RDP security warning

Saturday, May 10th, 2008 Posted in Microsoft | No Comments »

I know this has probably been written about several hundred times before this but I feel that it is such an annoyance that I will go ahead and post the ... Read more..

Some early review answers for the 642-642 QoS exam

Friday, May 2nd, 2008 Posted in Cisco, QoS | No Comments »

What is the 'best' solution for reducing delay on a link? increase the bandwidth of the link What are three characteristics of converged network traffic? constant small-traffic flow, time sensitive packets, and brief outages ... Read more..