Hi Toni,
many thanks for your answer, that would confirm that my second config was correct.
I tested it with two pc windows 10.
This config was on a customer switch and to use just for a temporary configuration.
The only doubt I've, i'm not sure that on the customer switch the ip routing were enabled, because the firewall was doing routing.
But I've remembered it too late.
Anyhow thanks for your suggestions, that I will follow when I will have the same config to do.
Regards
FF63
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ff63
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Original Message:
Sent: Oct 28, 2021 10:03 AM
From: Toni Andreev
Subject: how to enable DHCP on aruba 2930F
Hi ff63,
With tagged ports this won't work, because the PCs will send the traffic untagged, so it won't be placed in vlan 400. However with the latest version of your config (untagged ports) everything is correct and it should work.
Did you try to renew the DHCP config on your PC after making the change from tagged to untagged ports?
On windows PCs you can do it with ipconfig /release and the ipconfig /renew in CMD.
If the problem persists you can try to narrow down the cause of the issue by checking if the communication between the PC and switch work if you assign a manual address to the PC?
If it fails, then you have a connectivity issue and not a configuration issue. If it is successful you can check the following:
1) are all of your hosts not getting IP address, if only some of the hosts are affected you check for their similarities/differences in OS, vendor etc.
2) you can also start a wireshark trace right before you trigger the DHCP process with the above mentioned commands and check on which step of the DORA process does it fail. - is the host sending a Discover message, does it receive an Offer from the 2930F switch etc.
HTH,
Toni
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Toni Andreev
Original Message:
Sent: Oct 06, 2021 02:21 AM
From: federico fontana
Subject: how to enable DHCP on aruba 2930F
I did a typo...but the problem is the same
vlan 400
name "Computers"
untagged 1/3-1/5
ip address 172.20.120.1 255.255.255.0
dhcp-server
exit
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ff63
Original Message:
Sent: Sep 30, 2021 11:25 AM
From: federico fontana
Subject: how to enable DHCP on aruba 2930F
Hi All,
I have made the following configuration on an Aruba2930F switch. I cannot understand why it's not working.
Pc connected to port 1/3 cannot get the ip address from DHCP.
vlan 400
name "Computers"
tagged 1/3-1/5
ip address 172.20.120.1 255.255.255.0
dhcp-server
exit
dhcp-server pool vlan400
authoritative
default-router 172.20.120.1
dns-server "8.8.8.8,8.8.4.4"
network 172.20.120.0 255.255.255.0
range 172.20.120.10 172.20.120.20
lease 7:00:00
exit
dhcp-server conflict-logging
dhcp-server enable
Could you please help ?
Many Thanks
FF63