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routerric.blogspot.com

router ric: November 2013

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An endeavour into network study. Tuesday, November 19, 2013. The network and its underlying performance is a fundamental component to performance of all applications that require its services. As such this subject has become a cornerstone to the development of many strategies to optimize its behaviour. In this small series of blogs I look at those strategies and their implementation. Understanding the TCP transmission Algorithms. The sender must buffer data while it waits for positive acknowledged from t...

routerric.blogspot.com

router ric: August 2011

http://routerric.blogspot.com/2011_08_01_archive.html

An endeavour into network study. Monday, August 29, 2011. Point To Point Protocol Over Ethernet. Enables use of PPP over an ethernet connection. Here i lay out a working solution between client and server. The many configuration options are under the 'Cisco IOS Broadband Access Aggregation and DSL Configuration Guide' under the Configuration Guide section of the Cisco Doc. Http:/ www.cisco.com/en/US/products/ps6441/products installation and configuration guides list.html. Username R3 password 0 RICH.

routerric.blogspot.com

router ric: June 2009

http://routerric.blogspot.com/2009_06_01_archive.html

An endeavour into network study. Saturday, June 27, 2009. QOS - Hardware Queue. Here i look at QOS starting from the ground up. First for traffic in the outbound direction. Each interface has a hardware queue also known as the tx-ring or transmit ring. This is always serviced FIFO. The size of this queue can be viewed. Router 1#show controllers fa0/0 inc tx lim. In this example the default size is 256 packets. This can be adjusted. In this example i reduce the size to 50 packets. The size of this queue i...

routerric.blogspot.com

router ric: May 2010

http://routerric.blogspot.com/2010_05_01_archive.html

An endeavour into network study. Friday, May 14, 2010. Using the PING TOS field. The extended ping command can be useful when testing MQC policies. The IP header TOS value of packets can be explicitly set, and hence MQC configuration can subsequently be tested. The extended ping command expects the TOS value to be set using a decimal value (see below). Target IP address: 10.0.0.2. Timeout in seconds [2]:. Extended commands [n]: y. Source address or interface:. Type of service [0]: 184. BGP no-prepend and...

routerric.blogspot.com

router ric: July 2009

http://routerric.blogspot.com/2009_07_01_archive.html

An endeavour into network study. Thursday, July 23, 2009. MPLS - BGP L3 VPN. With CCIE version 4 coming round the corner in October i thought i would turn my attention to some of the new topics on the syllabus. Here i look at MPLS VPNS and in the post i configure an MPLS L3 VPN. There are 3 customers: A, B and C. These are connected across the shared MPLS infrastructure. The goal is to allow each customer to see their partner sites routes, and their routes only, across the MPLS cloud. Interface Serial2/1...

shouldhavegonewithcisco.com

Ratings Guide « Should Have Gone With Cisco

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Should Have Gone With Cisco. Everything under the Cisco sun. Recently I started doing more book reviews so I wanted to include some sort of guide based on my ratings…. This area includes things such as general impression of the book (production, style), text size, readability, color schemes, diagrams, outputs and other visual aides present to assist with learning. How well the book flows from start to finish. Is this a book that you can use while practicing with hardware in a lab? The overall rating is n...

shouldhavegonewithcisco.com

Should Have Gone With Cisco

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Should Have Gone With Cisco. Everything under the Cisco sun. Nexus 7000 Virtual Portchannel Part 3 (final). April 30th, 2009. Ok guys, sorry for the delay on this one… Between work and my personal life, I have been so busy! At this point, we have a working vPC peer link between our Nexus boxes. Remember our vPC peer keep-alive link needs to be up as part of this (I think of it as the heartbeat link). Read the rest of this entry ». Q&A – VSS and Jumbo Frames. April 28th, 2009. What about the VSL links?

cauew.blogspot.com

Cisco Network Engineer: October 2008

http://cauew.blogspot.com/2008_10_01_archive.html

Friday, October 31, 2008. The War Begins again! Internetwork Expert major announcement and IPExpert Answer. Made their major announcement. You can check it out at their website. There are some very cool ideas over there. Here´s the direct link to the video:. Http:/ www.internetworkexpert.com/news/corporate announcement.htm. Today Mr. Matt Brooks from IPExpert. 180;s announcement, and I must agree with him in some points, some of the new stuff of Internetwork Expert. Like the CCIE Blog. And you know what?

routerric.blogspot.com

router ric: October 2011

http://routerric.blogspot.com/2011_10_01_archive.html

An endeavour into network study. Sunday, October 2, 2011. BGP communities are passed between bgp peers when the 'send community' attribute is set with the neighbor. However what if there is a requirement to delete one of the communities from a list associated with a route! The solution relies on the 'set comm-list' command. This enables communities matched by the community-list to be removed. Below i attach the working config from R2. Ip community-list standard RIC permit no-advertise. Lock and Key ACL.