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Esercizi Routing.pdf - the Netgroup at Politecnico di Torino

Esercizi Routing.pdf - the Netgroup at Politecnico di Torino

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5.2. Convergenza del Link St<strong>at</strong>e (2)<br />

5.2.1. Accensione <strong>di</strong> R3<br />

Questa fase è sostanzialmente uguale a quella dell’esercizio precedente; la negoziazione master/slave,<br />

lo scambio <strong>di</strong> d<strong>at</strong>abase description e la sequenza <strong>di</strong> pacchetti link st<strong>at</strong>e request/upd<strong>at</strong>e avviene sia tra<br />

R3 e R2 che tra R3 e R4.<br />

5.2.2. Shortest P<strong>at</strong>h Spanning Tree<br />

1<br />

Router R1<br />

H 1 G<br />

C<br />

R4 R3<br />

3<br />

2<br />

D B<br />

A<br />

R1<br />

4<br />

R2<br />

1<br />

1<br />

E<br />

Router R2<br />

C<br />

R4 R3<br />

3<br />

D B<br />

A<br />

R1<br />

4<br />

R2<br />

1<br />

2<br />

H 1 G<br />

E<br />

36<br />

1<br />

1<br />

F<br />

F<br />

2<br />

2

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