Quality of Service, Switching

AutoQos error while generating commands

René Jorissen on December 2, 2010 1 Comment • Tags: #autoqos #commands #configuration #error #exclusive #generating #mode #while

First of all, the post isn’t about explaining QoS. Configuring AutoQos on Cisco switches should be very easy. At least, that is what all the Cisco documentation tells you. I always thought that the statements about configuration AutoQos were true, but a few days ago I would disagree. I was configuring multiple switches, Cisco Catalyst … Read More

Quality of Service

PacketShaper Traffic Discovery and Citrix Session Reliability

René Jorissen on April 16, 2010 0 Comments • Tags: #citrix #data #discovery #encryption #packetshaper #reliability #session #stream #traffic

While troubleshooting some performance issues with Citrix sessions between headquarters and sub locations, I decided to take a closer look at the PacketShaper. The PacketShaper is positioned at the headquarter and does outbound shaping to the sub locations. The PacketShaper is using older software (7.2x), which isn’t necessarily a problem. I deleted the class for … Read More

Configuration Example, Quality of Service

CB-WFQ Bandwidth Allocation

René Jorissen on January 13, 2010 0 Comments • Tags: #bandwidth #based #cbwfq #class #classbased #fair #maxreserved #priority #queueing #weighted

When configuring Quality of Service with CB-WFQ I am always puzzling to get the correct classes. When configuring CB-WFQ it is important to remember that the router does not allow the class queues to consume more than 75% of the total interface bandwidth. The remaining 25% are used for the default class as well as … Read More

Quality of Service

Campus QoS Design Add-On

René Jorissen on June 26, 2008 0 Comments

Yesterday I attended the QoS Design session and blogged on the subject. After posting the blog on the internet I received an e-mail about a statement in the blog. I placed the following statement on the blog: “Remember e-mail is NOT mission-critical.” In the e-mail I received the following comment on this statement. “What he … Read More

Quality of Service

Campus QoS Design

René Jorissen on June 25, 2008 0 Comments • Tags: #boundary #cos #dscp #policing #propagation #queuing #serialization #shaping #trust

What can somebody tell me about QoS after I passed the Cisco QoS (642-642) exam just one hour ago ?!?!?! ;-). A lot as I noticed from the session. When designing QoS SLA’s are very important. What are the required latency, jitter and data loss for the different applications, which traffic is really mission-critical and … Read More