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Loopback and null interface

sridhar_kamath
Level 1
Level 1

‎01-04-2002 12:33 AM - edited ‎03-08-2019 09:30 PM

is it neccsary for configure loopback and null interface on the router? and why it is required to do so.

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smahbub
Level 6
Level 6

‎01-10-2002 12:16 PM

It isn’t a requirement to configure a loopback interface but it is helpful to diagnose malfunctions between the interface and device.

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pmoulay
Level 1
Level 1
In response to smahbub

‎01-11-2002 01:33 PM

In my humble opionion, it become a must when dealing with OSPF and IBGP. With OSPF because the RID use the highest loopback interface. The same goes for BGP. It is easy to find your neighbors. Help troubleshooting. If you have an additional subnet to spare, it is a good practice. My 2 cents.

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