Dans ce blog, nous discuterons du SD-WAN pour essayer de comprendre son enjeu et avantage pour l’entreprise. Nous commençons par explorer l’offre du marché, définir la technologie et so...
In this post let’s understand hard drive operation and try to find a methodology (procedure) to troubleshoot it (and heal it if needed). Lab setup for the purpose of our test we mount this setup...
In our test network R1, R2 and R3 are in the same RIP routing domain All these routers are configured for a PIM-SM mode operation The RP address is set to R3’s fa1/0 interface Notice that each route...
in this post let’s detail the operation of PIM (Protocol Independent Multicast) in sparse mode. Previous posts tackled the operation of PIM dense mode. Let’s recall that PIM is the multica...
In this blog we explore how a gateway (a router) present in a LAN handles routing to the outside of this network and use redirection to enhance this operation. lab setup Our lab setup is 3 routers: R1...
- Transmit Power Control in IEEE 802.11 Cisco WLAN networksTPC stands for Transmit Power Control. It’s a one of Cisco RRM, Radio Resources Management, techniques that are aimed at tackling interference, cross and co-channel, in Wlan networks. RRM: TPC, CHD and DCA It works tightly with CHD, Covergate Hole Detection, to optimize transmit power. TPC tends to minimize the transmit power and CHD to eliminate
- 10 security measures against 10 attacks in a LAN network – Part IAn Ethernet switch is the central element of a LAN network and operates at data link OSI layer. Every switch port defines a collision domain and can extend a broadcast or broadcast frame domain that is stopped by a router routed interface that operates at network OSI layer. By default switches support one broadcast domain
- Understand how Aruba ARMizes your WLAN for sure!Presenting ARM In this post, that is a part of a serie of post that discuss how Wlan to radio ressources management, we talk of Aruba way of doing it. The figure shows a simple wlan network of 6 AP or access points. This is heatmap showing that radio signal is very strong (in red)
- Understand RIP Routing Timers All in One Shot!This post is part of a series of posts about dynamic routing protocols and especially RIP. We’ll try to get a deep understanding of its operation and function as an introductory to dynamic routing logic in general. You’ll see that what we think easy may hide an incrementing complexity… a little introduction Berfore we start
- DUAL route FSM Processing of EIGRP QueriesThis blog is a part of series of posts about EIGRP routing protocol. Let’s recall that EIGRP is one of the so called IGP routing protocols. IGP stands for interior routing protocols as opposed to EGP or exterior routing protocols. In addition EIGRP is a hybrid as it borrows some similiarities to distance-vector and link-state
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