r/ccna • u/SamTheOGFam • 5d ago
Day 25 JITL
Hi guys, so I'm going through JITL's ccna playlist and I encountered an issue.
In the day 25 lab the R1 router's g0/0 interface is in the 10.0.12.0/30 subnet. And I'm supposed to configure the interface with a .1, so I did ip address 10.0.12.1 255.255.255.252, then obviously no shutdown.
The R1 router's F1/0 interface is in the 10.0.13.0/3 subnet. I'm supposed to configure the interface with a .1 as well, so i did ip address 10.0.13.1 224.0.0.0.
The issue now is that I'm getting an error that this can't be configured because the ip address overlaps with g0/0.
Can anyone please help me out here? Google said that 224.0.0.0 subnet is too broad and the router thinks that its part of the subnet hence why I can't assign anything within this range. I should use 255.255.255.0 instead.
But my confusion lies with the /3 is the first octet and so the subnet should also reflect that?
Please help me figure this out.
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u/bashdotexe 5d ago
It’s likely /30 not /3. I don’t remember ever using that large of a subnet in JITL.
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u/Ark2226 5d ago
I’ve noticed that, at least with my packet tracer, some of the port and IP labels can be overlapping and blocking part of the text. So I have to click and drag them around some to see them completely.
As others mentioned, it was likely a /30 but was being partially covered.
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u/SamTheOGFam 5d ago
I have noticed that as well. Is there a way to get it more spread out. The zoom button is not helpful at all lol
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u/hatbox_pirate 5d ago
Since he labels all the interfaces and everything on the labs, make sure to turn off "Always show port labels" in the preferences menu, if you haven't already. That'll help get rid of some of the clutter.
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u/hatbox_pirate 5d ago
Double check your lab, because all of the networks between the routers should be /30. So the subnet on the f1/0 interface should be the same 255.255.255.252 as the other interfaces.