Pwerconnect 6224: vlan client computers do not receive the ip address of DHCP server on a different VLAN

Hello

I have a prolem routing dhcp requests between the vlan management where DHCP server resides and the other VLANs.

I have the scenario of base with three VLANS: vlan 10 (management vlan), 20, 30, configured on a Powerconnect 6224 switch L2 mode. This switch is connected to a pfsense router. The router is configured at the package of road between the VLANS and it does it well.

In Vlan 10, I have a configured DHCP server to use the ip addresses of all the VLANS (10, 20, 30). VLAN 10 client computers receive ip address but not others from other VLANs.

When I put the ip address in the appropriate range of VLANs manually on computers, I ping the server and I have connectivity.

This suggests that the problem is with the dhcp package.

The following is the configuration of the switch:

Configure
database of VLAN
VLAN 10,20,30
VLAN 1 1 routing
VLAN 20 2 routing
VLAN 30 3 routing
output
SNTP server time.nist.gov
clock timezone 1 minutes 0
battery
1 1 member
2 2 Member
output
DHCP IP address
IP address vlan 10
name of the IP-server 172.16.10.1

bootpdhcprelay cidridoptmode
interface vlan 1
Routing
IP 172.16.1.1 255.255.255.0
output
interface vlan 20
Routing
address 172.16.20.1 IP 255.255.255.0
output
interface vlan 30
Routing
IP 172.16.30.1 255.255.255.0
output
level of 20fc49459a1898b923ed3ec7b3e81276 user name 'admin' password encrypted 15
No spanning tree
spanning tree priority 0
l2relay DHCP
DHCP l2relay VLANs 10, 20-30
DHCP l2relay circuit-id VLANs 10, 20-30
!
interface ethernet 1/g2

l2relay DHCP
switchport access vlan 20
output
!
interface ethernet 1/g3
l2relay DHCP
switchport access vlan 30
output
!
interface ethernet 1/g21
switchport access vlan 10
output
!
interface ethernet 1/g22
switchport access vlan 10
output
!
interface ethernet 1/g23
switchport access vlan 10
output
!

interface ethernet 1/g24
switchport mode trunk
switchport trunk allowed vlan add 10,20,30
output
Server SNMP community EyesOfNetwork ro
SNMP-server community public ro
output

I followed the instructions in the powerconnect 6224 user guide, but no progress on this issue.

Any help will be be grateful.

Thank you

Zoubeir

The DHCP server stores information that could be useful? May need to configure monitoring ports and something as wireshark to monitor DHCP packets. This would help determine where the package is stopping.

example:

Console (config) #monitor session 1 source interface 1/g8

Console (config) #monitor session 1 destination interface 1/g10

session mode 1 #monitor console (config)

right now I don't see anything in the config of the switch that stands out. If the DHCP server is configured for option 82, then you will need to include the following command on the switch.

Example:

Trust l2relay console #dhcp (config-if-1/g1)

But I don't think that's our scenario here.

Tags: Dell Switches

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