DHCP not working for SG300

[Mohit Kumar]

Hi Guys,

i recently deployed SG300 switch. this is small site having only 1 switch and checkpoint firewall. there is vpn connecting this site to our hub location.

DHCP is not working. When i am assigning static IP, it is working fine but is not taking IP from DHCP server.

below are the configs. Please let me know if i am missing something here.

Configs:

interface vlan 100
 ip address 172.30.91.1 255.255.255.192
 ip dhcp relay enable
 

ip helper-address 172.30.91.1 172.17.16.229 37
ip helper-address 172.30.91.1 172.17.16.230 37
ip helper-address 172.30.91.1 172.17.16.229 42
ip helper-address 172.30.91.1 172.17.16.230 42
ip helper-address 172.30.91.1 172.17.16.229 49
ip helper-address 172.30.91.1 172.17.16.230 49
ip helper-address 172.30.91.1 172.17.16.229 53
ip helper-address 172.30.91.1 172.17.16.230 53
ip helper-address 172.30.91.1 172.17.16.229 137
ip helper-address 172.30.91.1 172.17.16.230 137
ip helper-address 172.30.91.1 172.17.16.229 138
ip helper-address 172.30.91.1 172.17.16.230 138

[Mohit Kumar]

172.17.16.230 and 172.17.16.229 are our DHCP servers.

[Mohit Kumar]

Hi, do anyone know about the issue.

this is dhcp relay output from switch

SG300#sh ip dhcp relay
DHCP relay is Enabled
Option 82 is Enabled
Maximum number of supported VLANs without IP Address is 256
Number of DHCP Relays enabled on VLANs without IP Address is 0
DHCP relay is enabled on Ports: gi1-10
Active:
Inactive: gi1-10
DHCP relay is enabled on Vlans: 100,300
Active: 100,300
Inactive:
Servers: 172.17.16.229 , 172.17.16.230