EIGRP

[rileykingsmill22]

How many network commands would be needed to connect 4 routers?

[Jon Marshall]

How many do you think it is and why ?

Jon

[rileykingsmill22]

I thought it was 2, because you can add more than one IP to a command.

[Jon Marshall]

I make it two as well because if you cannot use an inverse mask then EIGRP will assume the classful mask so the two statements would be - 

network 192.168.64.0
network 192.168.72.0

which covers all the interfaces. 

Note though that 192.168.64.0 covers a lot more but that is not what the question is asking so I am assuming that is the right answer. 

Jon

[paul driver]

Hello

You could do it with one network command

HK rtr
router eigrp xxx
network 0.0.0.0

[Jon Marshall]

Paul 

I thought it had to be - 

network 0.0.0.0 0.0.0.0 

or 

network 0.0.0.0 255.255.255.255 

but either way you need to use an inverse mask. 

Jon

[paul driver]

Hello Jon

my understanding mate its just the one syntax to enable eigrp on all connected interfaces no inverse is required

[Jon Marshall]

Paul

I need to test that because I thought "network 0.0.0.0" was used to advertise the default route in EIGRP not match all the interfaces ie. a special use case but I could well be wrong. 

Jon

[Georg Pauwen]

Hello,

since this appears to be CCNA level stuff. I would agree with @Jon Marshall that you need to classful networks.

The 'network 0.0.0.0' statement as suggested by @paul driver would work perfectly, but I think they want you to define the networks...

[paul driver]

Hello

What is the minimum number of EIGRP network commands on HongKong, without inverse masks, so that all 4 of the directly connected links on HongKong are enabled for EIGRP?

---

I read it as no inverse mask and all directly connected networks as such 0.0.0.0 would be applicable

[Georg Pauwen]

@paul driver You are technically absolutely correct, but I honestly think that in the context of a CCNA level exam, 'network 0.0.0.0' is not the answer. Even in the higher level exams, 0.0.0.0 never shows up. Actually, I have never seen it configured at all in a 'real' network (which doesn't mean much because I have probably seen only a small fraction of all networks)...

[rileykingsmill22]

So it's not two, it's one?

[paul driver]

Hello

Yes - i would say one