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Showing posts from June, 2007

CCIE OSPF Behaviors

There are five main behaviors when working with OSPF, some people get confused between them and I my self had a painful time understanding at the beginning what the hell we need them and what difference dose it make using one or the other.Broadcast - for shared network environment like Ethernet as you can see bellow by tweaking the interface behavior you can adjust also the timers and make it send multicats instead of unicast: Router1(config-if)#ip address 1.1.1.2 255.255.255.0Router1(config-if)#ip ospf network broadcastRouter1(config-if)#endRouter1# show ip ospf interface s0 Serial2 is up, line protocol is up Internet Address 1.1.1.2/24, Area 0 Process ID 1, Router ID 3.3.3.3, Network Type BROADCAST, Cost: 64 Transmit Delay is 1 sec, State DR, Priority 1 Designated Router (ID) 3.3.3.3, Interface address 1.1.1.2 Backup Designated router (ID) 2.2.2.2, Interface address 1.1.1.1 Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit …