Must have – The Administrative Distance

A Must have …. When a router learn the a network from different sources, it use the administrative distance to build the routing table. Low is best. Source Administrative Distance Connected interface 0 Static route 1 EIGRP summary route 5 External BGP 20 Internal EIGRP 90 IGRP 100 OSPF 110 IS-IS 115 RIP 120 Exterior …

Lan Switching part 1: Ethernet, Vlan & Trunk

Notes takes during my layer 2 reading. Cross-over cable ( T568A ) : KeY pins 1-3; 2-6 E1 Cable : Key pins : 1-2;4-5 Auto-MDX allow to use the wrong cable ( bot all cisco switch models) Switches are on auto-negotiation mode ( auto-determine speed and duplex ), use FLP (Fast Link Pulse) to “detect …

The CCIE Quest

Hi, My name is Lessaid, 27yo french geek, work on network stuff, and my target is to get CCIE before my 30th birthday. This blog will present my progress, my tips and all about CCIE written and Lab.