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Lab ipc-08 - OSPF MD5 / SHA Authentication
By default, OSPF neighbors will form an adjacency with anyone speaking the protocol on the same segment. In a production
4 min read
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Lab ipc-11 - EIGRP Feasible Successor and DUAL
EIGRP's signature feature is sub-second convergence on common failure modes. The secret: DUAL (Diffusing Update Algorithm) precomputes loop-free
6 min read
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Lab ipc-10 - EIGRP Named-Mode AS 100
EIGRP (Enhanced Interior Gateway Routing Protocol) is Cisco's dynamic routing protocol. It uses the DUAL algorithm (Diffusing Update
5 min read
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Lab ipc-05 - OSPF Multi-Area (ABR + Type 3 LSAs)
Multi-area OSPF divides a network into smaller logical zones connected through Area 0 (the backbone). Each non-backbone area connects to
5 min read
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Lab ipc-03 - RIPv2 Essentials
RIP (Routing Information Protocol) is the dynamic routing protocol every textbook teaches first because it is the simplest. Distance-vector, hop
4 min read
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Lab ipc-07 - OSPF DR/BDR Election
On a broadcast OSPF segment, the protocol elects a Designated Router (DR) and a Backup DR (BDR). Other routers form
5 min read