Refer to the exhibit. A network engineer connected two routers using OSPF but the routers are not sharing routes. Which command completes the configuration?
Refer to the exhibit. A network engineer connected two routers using OSPF but the routers are not sharing routes. Which command completes the configuration?
The routers are not sharing routes because all interfaces are set as passive by default under the OSPF configuration, which prevents OSPF Hello packets from being sent or received on those interfaces. To resolve this and establish OSPF adjacencies on the necessary interfaces, we need to disable the passive-interface setting specifically for the interface connected to the other router. The command to achieve this is to enter the OSPF routing process and use the 'no passive-interface GigabitEthernet5' command.
Correct
If we need all interfaces to be passive interfaces and leaving a single or a couple of interfaces non-passive, we can set passive interface as the default configuration by using the ‘passive-interface default’ command: Router#conf t Router(config)#router ospf 1 Router(config-router)#passive-interface default Router(config-router)#no passive-interface gi0/0/0
You described option A, however, chose answer D.
no passive-interface default will "activaet" the hello in the other interfaces.
Answer D
It is recommended to configure passive-interface default under the OSPF routing process and specifically enable the interfaces where routing adjacencies are to be formed.
D is correct
"...R1 fails and then regains operational status, it must allow 100 seconds for the routing protocol to converge before preemption takes effect." So R1 is active than goes down and R2 takes the active role. Once R1 come up it has to wait for 100 sec till it takes over the active role Preemption delay hast to be set on R1 to "tell" the router to wait 100 sec... standby 300 preempt delay minimum 100 (one comment: standby [ group-number] preempt [ delay{ [ minimum seconds] [ reload seconds] [ sync seconds]}] ) --> standby 300 delay minimum 100 is missing the preempt command
First the state is Listen and start countdown (98 remaining) SW2#show standby Vlan100 - Group 300 (version 2) State is Listen Preemption enabled, delay min 100 secs (98 remaining) Once it is ready it goes into the Standby state and countdown is conituned (67 remaning) *Mar 20 11:56:41.501: %HSRP-5-STATECHANGE: Vlan100 Grp 300 state Speak -> Standby SW2#show standby Vlan100 - Group 300 (version 2) State is Standby Preemption enabled, delay min 100 secs (67 remaining)