David_Blumberg
asked on
Netgear Smart Switch S3300 VLAN and DHCP issues
Our layout consists of a Cisco 4331 with several S3300 Netgear POE Smart Switches on a Windows 2012 Server domain. We have two vlans, 10 for data and 20 for voice. For some reason the data vlan clients are not receiving the proper DHCP information from the Windows 2012 server and the only way to get the clients or access points to work is to use a static ip.
Cisco Ports
G0/0/1.10 is encap to 10
G0/0/1.20 is encap to 20
Port 1 of the first Netgear switch is connected to the router and is set for Untagged on all Vlans
Port 2 of the first Netgear switch is connected to the server and is set for Untagged on all vlans with pvid 100 and vlan tag of 100
Any thoughts since the Netgear manual unfortunately is hopeless, Thank you
Cisco Ports
G0/0/1.10 is encap to 10
G0/0/1.20 is encap to 20
Port 1 of the first Netgear switch is connected to the router and is set for Untagged on all Vlans
Port 2 of the first Netgear switch is connected to the server and is set for Untagged on all vlans with pvid 100 and vlan tag of 100
Any thoughts since the Netgear manual unfortunately is hopeless, Thank you
SIM50
Does your Cisco router do routing for vlan 10 and 20? If yes then why not move DHCP server to vlan 10 and setup ip helper-address on G0/0/1.20?
ASKER
When you say move the dhcp server to vlan 10, you are talking about the windows 2012 server or switch it to cisco? If keeping on windows 2012 the port is tagged for 10 already. Thank you
Port 2 of the first Netgear switch is connected to the server and is set for Untagged on all vlans with pvid 100 and vlan tag of 100
If keeping on windows 2012 the port is tagged for 10 already.
Which one is it?
ASKER
Sorry Port 2 is pvid 10 and vlan tag of 10 which is connected to the windows 2012 server
Ok, so two VLAN's with gateways on the Cisco router. DHCP server is located on VLAN 10 but only VLAN 20 gets assigned DHCP addresses while VLAN 10 doesn't. How does broadcast traffic from VLAN 10 gets to VLAN 20? Something doesn't match up. Can you post config int G0/0/1.10 and G0/0/1.20?
ASKER
No neither vlan is giving ip addresses:
vlan 10 is data and is supposed to get dhcp addresses located from windows server located on port 3 of switch. Port 1 is the router
Vlan 20 is voice and dhcp is coming from the router
configs:
!
interface GigabitEthernet0/0/1.10
description Data VLAN10
encapsulation dot1Q 10
ip address 192.168.10.1 255.255.255.0
no ip redirects
ip nat inside
zone-member security LAN
no cdp enable
ip virtual-reassembly
!
interface GigabitEthernet0/0/1.20
description Voice VLAN20
encapsulation dot1Q 20
ip address 192.168.15.1 255.255.255.0
ip nat inside
zone-member security LAN
no cdp enable
ip virtual-reassembly
vlan 10 is data and is supposed to get dhcp addresses located from windows server located on port 3 of switch. Port 1 is the router
Vlan 20 is voice and dhcp is coming from the router
configs:
!
interface GigabitEthernet0/0/1.10
description Data VLAN10
encapsulation dot1Q 10
ip address 192.168.10.1 255.255.255.0
no ip redirects
ip nat inside
zone-member security LAN
no cdp enable
ip virtual-reassembly
!
interface GigabitEthernet0/0/1.20
description Voice VLAN20
encapsulation dot1Q 20
ip address 192.168.15.1 255.255.255.0
ip nat inside
zone-member security LAN
no cdp enable
ip virtual-reassembly
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ASKER
I agree, I actually completely reset the netgear switch and changed dhcp to the router for vlan 10 since thinking it could be an issue with the windows server and netgear and the router is now passing dhcp address requests to vlan 10 and 20, but for some reason it is not passing the dns suffix information for the domain. Any thoughts on that?
Do a packet capture and see if option 6 is set.
ASKER
We ended up setting the units with DNS suffix which is working but not what we were looking for.