Monday, July 28, 2014

Stub Flag in EIGRP Hello Packet

How EIGRP Hello packet looks like if it is not having stub flag; picture express best.












Now, how the hello packet will be looking if we include stub command in EIGRP Process. Let's check the same.















So, if you enable stub in EIGRP then you will have one more field in hello packet called "Peer Stub Information" which is 6 bit length information where all the stub option mentioned, you can even see the same in the screenshot. which type of stub is enabled that will be set to "1".

So, this is how the Hello packet being different in EIGRP in respect to with or without Stub flag.

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