OSPF: Difference between revisions
Content added Content deleted
Line 202: | Line 202: | ||
*OSPF sends hellos every 10 seconds and refreshes its LSAs every 30 minutes. |
*OSPF sends hellos every 10 seconds and refreshes its LSAs every 30 minutes. |
||
*These functions maintain neighbor relationships and ensure that the link-state databases are accurate and use far less bandwidth than similar functions in RIP & IGRP. |
*These functions maintain neighbor relationships and ensure that the link-state databases are accurate and use far less bandwidth than similar functions in RIP & IGRP. |
||
*However, even this amount of traffic is undesirable on demand circuits |
*However, even this amount of traffic is undesirable on demand circuits. |
||
*Using OSPF demand circuit options suppresses hello and LSA refresh functions. |
|||
*OSPF can establish a demand link to form an adjacency and perform initial database synchronization, the adjacency remains active even after Layer 2 of the demand circuit goes down. |
*OSPF can establish a demand link to form an adjacency and perform initial database synchronization, the adjacency remains active even after Layer 2 of the demand circuit goes down. |
||