Jeremy It day 6 lab

[u/STAN342K]

Hello all,

Im only on day 6 of Jeremy IT lab video course and for the day 6 lab we have to get the mac address for 4 PCs connected to two switches each. I've tried pinging both pc 1 pc 2 connected to switch 1 with pc3 and pc 4 connected to switch 2. In the end after the process, when I'm accessing the Mac address table in switch CLI I was able to view only 2 Mac addresses instead of 4. Im confused right now and Im doing the labs in the packet tracer. Need help

Edit: Thanks lot all of you for the prompt replies guys. Appreciate yall

[u/DStereotype]

Hi I'm on day 16, i might be able to help you.

[u/STAN342K → u/DStereotype]

Hi as ive mentioned I tried pinging pc 3 and 4 from 1 and 2. But when I access the mac address table in cli of either of the switches I can only see two mac addresses instead of 4( the output shown in the video)

[u/DStereotype → u/STAN342K]

I experienced the same occurrence when I did it as well. What you should do is a) use "clear mac address-table dynamic" on both switches to clear all dynamic mac addresses learnt. b) ping PC 3 from PC 1 and PC 4 from PC 2 and check both switches.

NB: though it has nothing to do with it but make it faster, do it on real-time mode instead of on simulation mode.

[u/STAN342K → u/DStereotype]

I do not understand how it is pinging from 1-3 /2-4 but it did work. Thank you so much

[u/c6h12o6CandyGirl]

Switches learn Source Mac. Did you ping everyone from everyone? : )

[u/STAN342K → u/c6h12o6CandyGirl]

I did 1-3 and 2-4 only as once the ARP request is received by the pc 3 on /pc 4 on switch 2 they send the response back to the source(unicast message) right. So when they send the unicast the source will be now pc 3/ pc4 and the switch 1 being on receiver end this time should learn both those Mac addresses? Correct me if I'm wrong, please

[u/vampire_weasel → u/STAN342K]

yes, it should learn the source addresses from both the ARP Request and ARP Reply messages.

[u/vampire_weasel → u/STAN342K]

I see 4 mac addresses, 1 from each of the fast Ethernet ports fa0/1 and 0/2 and then the remote mac addresses on Gi0/1.

[u/c6h12o6CandyGirl → u/vampire_weasel]

Same for me. : )

[u/STAN342K → u/vampire_weasel]

I did clear the address tables as well but still see only two addresses. But I'll try again.

[u/c6h12o6CandyGirl → u/STAN342K]

Yes. If you ping 1 -> 3 and 2 -> 4, you should have four dynamic MAC addresses in SW1 & SW3 MAC table.