DHCP client didnt get internet

Samaj0101 · ‎03-31-2021

all ports are in VLAN 1,I have 3 switches. I have configured DHCP in switch3. because I want my pcs to get IP from fix range(in only switch3 ).

I get IP from range but couldn't access the internet. the switch is connected with the firewall (other switches get ip from firewall DHCP server) DHCP configured in firewall.

Georg Pauwen · ‎03-31-2021

Hello,

if both the DHCP server on the firewall and the switch are dishing out addresses from the same subnet, make sure there are no address conflicts.

paul driver · ‎03-31-2021

Hello

@Samaj0101 wrote:

I have configured DHCP in switch3. because I want my pcs to get IP from fix range(in only switch3 ).

The above doesn't make sense do you mean ip dhcp reservation for hosts on switch 3?

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Kind Regards
Paul

Seb Rupik · ‎04-01-2021

Hi there,

If switch3 is handing out leases, then it must have a Layer3 interface on the VLAN. There is a good chance that the DHCP scope for that VLAN is specifying the Switch3 interface as the gateway where in fact it should be set to the firewall interface on that VLAN.

It is generally a bad idea to run two DHCP servers issuing leases with different options!

Any chance you should share the DHCP config from both the firewall and switch3?

cheers,

Seb.