Dell 6224 and Windows 2003 DHCP Server

Question

Hi Experts, Many thanks in advance. I got this problem that i can't figure it out and need your assistance or giving me some ideas. We inheritted an old network that  has a SonicWall 2040 connected to two Dell 6224s configured as stack unit. Port 1, 2, 3 are configured as vlan2. The rest of the ports configured vlan3.  Port 1 connected to the Sonic Wall, Port 2 connected to windows 2003 DHCP server. We have several building and each has its own vlan for security purposes. DHCP scope is configured on the windows 2003 server. It seems we are having a problem with our internet so we suspected that old Sonic wall need a replacement. So, i put our Cisco PIX 515E to the task. From the dhcp server, because its default gateway pointed to the firewall, i can connect to the internet without any problem. However, clients stop receiving IP addresses as soon as I put the Cisco PIX515E on the network. Do you think this is something to do with the Dell vlan configurations? I removed the firewall CAT5 and DHCP server CAT5 to different vlan port and still, clients in different building don't receive ip addresses. When i put the sonicwall back to its original port, then, clients receive IP addresses. Here is the switches running config, especially don't understand this command: spanning-tree cost 20000spanning-tree portfast   !Current Configuration:!System Description 'Dell 24 Port Gigabit Ethernet, 2.0.1.4, VxWorks5.5.1'!System Software Version 2.0.1.4!configurevlan databasevlan  2-10exitstackmember 1 1member 2 1exitswitch 1 priority 12ip address 192.168.1.1 255.255.255.0no diffservip routingip route 0.0.0.0 0.0.0.0 10.0.0.1bootpdhcprelay enablebootpdhcprelay serverip 10.0.0.251router ripno enabledefault-metric 1exitinterface vlan 2name 'Internet - DHCP Server'routingip address  10.0.0.2  255.255.255.0exitinterface vlan 3name 'Bldg A'routingip address  10.0.1.1  255.255.255.0exitinterface vlan 4name 'Bldg B'routingip address  10.0.2.1  255.255.255.0exitinterface vlan 5name 'Bldg C'routingip address  10.0.3.1  255.255.255.0exitinterface vlan 6name 'Bldg G'routingip address  10.0.4.1  255.255.255.0exitinterface vlan 7name 'Bldg D'routingip address  10.0.5.1  255.255.255.0exitinterface vlan 8name 'Bldg M'routingip address  10.0.6.1  255.255.255.0exitinterface vlan 9name 'Bldg K'routingip address  10.0.7.1  255.255.255.0exitinterface vlan 10name 'Bldg F'routingip address  10.0.8.1  255.255.255.0exitno spanning-treespanning-tree priority 4096spanning-tree mst configurationname '00-1C-23-5C-85-3E'exitrouter ospfrouter-id 10.0.0.2no enabledefault-metric 1default-information originate metric 1exit!interface ethernet 1/g1description 'Firewall'spanning-tree cost 200000spanning-tree portfastswitchport access vlan 2exit!interface ethernet 1/g2description 'Server'spanning-tree cost 20000spanning-tree portfastswitchport access vlan 2exit!interface ethernet 1/g3switchport access vlan 2exit!interface ethernet 1/g4switchport access vlan 3exit!interface ethernet 1/g5switchport access vlan 3exit!interface ethernet 1/g6switchport access vlan 3exit!interface ethernet 1/g7switchport access vlan 3exit!interface ethernet 1/g8switchport access vlan 3exit!interface ethernet 1/g9switchport access vlan 3exit!interface ethernet 1/g10switchport access vlan 3exit!interface ethernet 1/g11switchport access vlan 3exit!interface ethernet 1/g12switchport access vlan 3exit!interface ethernet 1/g13switchport access vlan 3exit!interface ethernet 1/g14switchport access vlan 3exit!interface ethernet 1/g15switchport access vlan 3exit!interface ethernet 1/g16switchport access vlan 3exit!interface ethernet 1/g17switchport access vlan 3exit!interface ethernet 1/g18switchport access vlan 3exit!interface ethernet 1/g19switchport access vlan 3exit!interface ethernet 1/g20switchport access vlan 3exit!interface ethernet 1/g21switchport mode trunkswitchport trunk allowed vlan add 4switchport trunk allowed vlan remove 1exit!interface ethernet 1/g22switchport mode generalswitchport general pvid 10no switchport general acceptable-frame-type tagged-onlyswitchport general allowed vlan add 10switchport general allowed vlan add 5 taggedswitchport general allowed vlan remove 1exit!interface ethernet 1/g23switchport mode trunkswitchport trunk allowed vlan add 6switchport trunk allowed vlan remove 1exit!interface ethernet 1/g24switchport mode trunkswitchport trunk allowed vlan add 7switchport trunk allowed vlan remove 1exit!interface ethernet 2/g1description 'Server'switchport access vlan 3exit!interface ethernet 2/g2switchport access vlan 3exit!interface ethernet 2/g3switchport access vlan 3exit!interface ethernet 2/g4switchport access vlan 3exit!interface ethernet 2/g5switchport access vlan 3exit!interface ethernet 2/g6switchport access vlan 3exit!interface ethernet 2/g7switchport access vlan 3exit!interface ethernet 2/g8switchport access vlan 3exit!interface ethernet 2/g9switchport access vlan 3exit!interface ethernet 2/g10switchport access vlan 3exit!interface ethernet 2/g11switchport access vlan 3exit!interface ethernet 2/g12switchport access vlan 3exit!interface ethernet 2/g13switchport access vlan 3exit!interface ethernet 2/g14switchport access vlan 3exit!interface ethernet 2/g15switchport access vlan 3exit!interface ethernet 2/g16switchport access vlan 3exit!interface ethernet 2/g17switchport access vlan 3exit!interface ethernet 2/g18switchport access vlan 3exit!interface ethernet 2/g19switchport access vlan 3exit!interface ethernet 2/g20switchport access vlan 3exit!interface ethernet 2/g21switchport mode trunkswitchport trunk allowed vlan add 8switchport trunk allowed vlan remove 1exit!interface ethernet 2/g22switchport mode trunkswitchport trunk allowed vlan add 9switchport trunk allowed vlan remove 1exitexit

bdearlove · Answer

Check and see if the switch has DHCP Filtering enabled. It may be filtering DHCP from the PIX.

speedingwolf73 · Answer

Thanks for responding. I am not sure if the switch has this feature turned on as i reviewed its running config. The PIX is configured from the ground up so I don't think it has dhcp filtering enabled as well.

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