Blog

EIGRP vs OSPF: When to Use Each
EIGRP

EIGRP vs OSPF: When to Use Each

EIGRP vs OSPF in 2026. The technical differences, the convergence story, vendor reality (EIGRP is still Cisco-only in practice), and the design implications for new vs existing networks.
EIGRP Metric and K Values Explained
EIGRP

EIGRP Metric and K Values Explained

The EIGRP composite metric formula, the five K values and why never to change them, the 64-bit wide metric for modern interfaces, and how to verify metrics in show output.
Voice and Video QoS on Cisco IOS XE
QoS

Voice and Video QoS on Cisco IOS XE

Voice and video are the use cases QoS exists for. Latency and jitter budgets, DSCP markings, IP phone trust, LLQ configuration, codec bandwidth math, and wireless voice via WMM.
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