IS-IS and OSPF: Network Design Comparisons and ... - JANOG
IS-IS and OSPF: Network Design Comparisons and ... - JANOG
IS-IS and OSPF: Network Design Comparisons and ... - JANOG
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SPF Calculation Example<br />
Link-state Database Tentative Path<br />
R1-R2, 1<br />
R1-R5, 2<br />
R2-R1, 2<br />
R2-R3, 1<br />
R2-R4, 2<br />
R3-R2, 3<br />
R3-R4, 2<br />
R4-R2, 4<br />
R4-R3, 4<br />
R4-R5, 4<br />
R4-R6, 2<br />
R5-R1, 3<br />
R5-R4, 5<br />
R5-R6, 3<br />
R6-R4, 1<br />
R6-R5, 2<br />
LS Entry<br />
Cost to Root<br />
R4-R6, 2 4<br />
R5-R6, 3 7<br />
R2-R2, 0<br />
R2-R3, 1<br />
R2-R1, 2<br />
R2-R4, 2<br />
R1-R5, 4<br />
R4-R6, 4<br />
• Tentative is empty<br />
• All nodes in link-state database<br />
are in path<br />
• SPF calculation is finished
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