My DHCP Server (Linux) is link on Switch 1 - port 7.
I enabledthe DHCPsnoopinganddhcprelay but no activated the option 82 :
- switch 1 - port 7 : trusted
- switch 2 - LAG 1 : trusted
- switch 3 - LAG 2 - trusted
I specifiedtheIPaddress of myDHCPserverto relayon the threeswitches.
My clientsreceiveIPaddresses butI get errorson theswitch 1 :
%DHCPSNOOP-E-HDRMAC: DHCP packet mac addresses verification problem - packet dropped: vlan - 20, port - Po2, mac source address - <mac_address_switch3>, mac dest ad dress - <mac_adress_dhcp_server>, hw client address - <mac_adress_client_connect_on_switch3>, error - DHCPSnP_packet_callback
Someonewould have anidea ofwhere the problem is?
There are no routes between my VLAN's.
But the switch 1 goes to a Linux server that could possibly router. This server is a DHCP server.
The DHCP error that relates to VLAN 20. The PC that runs the DHCP request is allowed only on VLAN 10.
Is your DHCP server in VLAN 10? and PC on VLAN 20 cannot get IP? if this is the case you need to set up layer 3 device whcih would have IP interface in both VLANs and relay bootp from VLAN 20 to VLAN 10.
All switches are configured as Level 3 and has an IP in all VLAN's.
My DHCP server also has an IP in all VLAN's.
So VLAN 10 receives IP addresses from the network 192.168.10.0/24 and VLAN 20 receives IP addresses from the network 192.168.20.0/24.
For cons, the error I mentioned at the top corresponds to a PC VLAN 10 who is receiving an IP address 192.168.10.0/24 but I do not know why the error speaks VLAN 20.
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