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Monthly Archives: May 2012
A smart advise when designing high-end networks
I didn’t check where this quotes originates from, but is very true all the same: “Switch where you can, route where you must”
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RIP and hold-down timers
Click here for the PDF file that explains the algorithm: hold-down-timer-algorithmn1
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The EIGRP feasibility conditions
A Cisco IOS EIGRP feasible successor router can become successor provided the following criteria are met: 1. ADfeasible successor < FDsuccessor
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Router summurization in contiguous and discontiguous networks
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Explanation by examples: virtual routing tables (vrf)
1. Create 3 virtual router forwarding (vrf) table entries In the following example we are going to setup VRF tables and see how they can be applied to ordinary routers. MPLS is not used in this example, which make the … Continue reading
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The Spanning Tree (SPT) Algorithm explained in detail
Spanning Tree Protocol SPT Note: The phrase “bridge” can be read as switch as well in the explanantion below. 1. Elect the Bridge with the LOWEST Bridge – ID (BID = Priority. MAC) as root bridge. The default Priority is … Continue reading
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