With the exponential improvement of the Ethernet standard, the concept of collision domain, diameter, and window needed to be adjusted by looking at the relation between time it takes to transmit a frame and the transmission speed. Since Fast Ethernet is ten times faster than that of Ethernet, the designer had to decide to either [...]
Filed under: Implementation, Network Management, Operations, Technology - General | Tagged: General Tec, Intro, Introduction, Theory | Leave a Comment »
Ethernet is one of those funny technologies that we all learn in introduction to networking courses, operate on a daily basis in our enterprises, and that normally falls into the interesting paradox of being vitally important yet hardly noticed. It is the most prolific commodity multi-access technology, but Ethernet is a technology whose success is [...]
Filed under: Implementation, Network Management, Operations, Technology - General | Tagged: General Technology, Introduction, Theory | Leave a Comment »
As previously discussed, the use of BGP between multiple BGP speakers within a single AS requires a full mesh of peerings. If there are limitations within the network that do not allow the routers to be fully meshed then one workaround to accommodate for BGP scalability is the use of BGP [...]
Filed under: BGP, Implementation, Operations, Technology - General | Tagged: BGP, Configuration, Theory | Leave a Comment »
BGP Synchronization Scenarios
The use of BGP on multiple routers within a single Autonomous System presents complications in configuration due to the fact that internal BGP has no loop prevention mechanism. To review; BGP uses AS-Path as its loop prevention mechanism. Network reachability information received from an eBGP peer is sent with [...]
Filed under: BGP, Implementation, MPLS, Operations, Route Redistribution | Tagged: Implementation, IOS, Operation, Theory | Leave a Comment »
BGP Scenario Startup Configs
.NET Scenario File
Introduction to BGP – Slides
BGP can be classified as a path vector routing protocol. In a brief review of IGP dynamic routing protocol classifications, you may remember that distance vector routing protocols have the following characteristics:
Pass full routing tables
Directly connected neighbors
Hop count as a metric
Time based updates
Routes are understood from [...]
Filed under: BGP, Implementation, Operations | Tagged: Config, Practical, Theory | Leave a Comment »
Tier-2 Explanation: Gap analysis on this topic was a zero. The DistributedDirector feature set/Application is new to me and will require more research to achieve Tier-3 understanding.
The Director Response Protocol (DRP) is used by the DistributedDirector application to query DRP Servers for EGP/IGP metric information. With the information gathered, the Director is able to respond [...]
Filed under: IP Services | Tagged: IP Services, More to come, Theory | Leave a Comment »
IOS 12.2-> Configuration Guides-> IP Configuration Guide-> IP Addressing & Services-> Configuring IP Addressing
Network Address Translation (NAT) has become de facto method of maintaining private address space for internal enterprise/campus configuration while also conserving the rapidly diminishing public IPv4 address space.
This article will focus on the configuration guidelines for tier-2 understanding of NAT.
NAT Terminology:
Inside-Local: An [...]
Filed under: IP Services | Tagged: Configuration, IP Services, Theory | Leave a Comment »
