Cisco CCNP / BSCI Exam Tutorial: The Passive Interface Command And OSPF
To go the BSCI Test and http://edition.cnn.com/search/?text=Acheter des Followers Instagram become a CCNP, you have to pay attention to the appropriate use of passive interfaces. You uncovered about passive interfaces in your CCNA studies, but below well critique The essential idea and very clear up just one false impression with regards to passive interfaces and OSPF.
Configuring an interface as passive will nevertheless allow the interface to acquire routing updates, though the interface will not transmit them. Even though the command by itself would make you think that this command is going to be utilized within the interface stage, that is not the situation. Underneath, properly configure ethernet0 as being a RIP passive interface.
R1(config)#router rip
R1(config-router)#passive-interface ethernet0
Ethernet0 will now not ship RIP routing updates, but will accept them.
The passive interface notion is obvious ample with RIP, IGRP, and EIGRP all protocols that send out routing update packets. But OSPF doesnt mail routing update packets OSPF sends hyperlink state commercials. Its The lack with the passive interface command to stop LSAs that guide many to imagine that passive interfaces can not be used Acheter des Followers Instagram with OSPF.
Regardless that OSPF would not despatched “routing updates” in the form that RIP, IGRP, and EIGRP do, you could nonetheless configure an OSPF-enabled interface as passive so as to prevent OSPF traffic from exiting or getting into that interface. No OSPF adjacency might be formed if one of the interfaces concerned is a passive interface, and when you configure an OSPF-enabled interface as passive exactly where an adjacency previously exists, the adjacency will drop almost immediately.
Allow’s see that in action. R1 and R2 have an existing OSPF adjacency more than their Ethernet interfaces. In order to cut down routing website traffic, R1’s e0 interface is configured as passive. The adjacency drops at once.
R1(config)#router ospf 1
18:31:eleven: %OSPF-five-ADJCHG: Process one, Nbr two.2.2.2 on Ethernet0 from FULL to DOWN, Neighbor Down: Interface down or detached
Knowing tips on how to make use of the passive interface command is an important Section of staying a CCNP, and of staying a learn networker. Very good luck to you personally in equally of those pursuits!
