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New Member

SG300 DHCP Relay forwarding

Good day !

Does it work on cisco SG- 300 dhcp relay forwarding?

In the following example, one client port , 10 uplink.

Need to query the DHCP server went 3 vlan.

The current configuration of the device :

cisco # sh run



v1.3.0.62 / R750_NIK_1_3_647_260

CLI v1.0

set system mode switch

file SSD indicator encrypted



ssd config

ssd file passphrase control unrestricted

no ssd file integrity control

ssd-control-end cb0a3fdb1f3a1af4e4430033719968c0


vlan database

vlan 3


voice vlan oui-table add 0001e3 Siemens_AG_phone________

voice vlan oui-table add 00036b Cisco_phone_____________

voice vlan oui-table add 00096e Avaya___________________

voice vlan oui-table add 000fe2 H3C_Aolynk______________

voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone

voice vlan oui-table add 00d01e Pingtel_phone___________

voice vlan oui-table add 00e075 Polycom / Veritel_phone___

voice vlan oui-table add 00e0bb 3Com_phone______________

ip dhcp relay address

ip dhcp relay enable

ip dhcp information option

hostname cisco

username admin password encrypted 0f0d94736bb667432e60589ac7efd30954bc9cf5 privilege 15

ip telnet server


interface vlan 1

ip dhcp relay enable


interface vlan 3

name 3 -manage

ip address

no ip address dhcp

ip dhcp relay enable


interface gigabitethernet1

speed 100


interface gigabitethernet10

switchport trunk allowed vlan add 3



ip default-gateway

cisco # sh vlan

Vlan Name Ports Type Authorization

-------------------------------------------------- -----------------------

1 1 gi1- 10 , Po1- 8 Default Required

3 3 -manage gi10 static Required

Dump in the attachment .


SG300 DHCP Relay forwarding

Dear Vladimir,

Thank you for reaching the Small Business Support Community.

Please refer to the below document, Command Line Interface Guide for SG300, chapter 46 page 759;

I hope this is what you were looking for and please do not hesitate to reach me back if there is any further assistance I may help you with.

Kind regards,

Jeffrey Rodriguez S. .:|:.:|:.
Cisco Customer Support Engineer

*Please rate the Post so other will know when an answer has been found.

Jeffrey Rodriguez S. .:|:.:|:. Cisco Customer Support Engineer *Please rate the Post so other will know when an answer has been found.
New Member

SG300 DHCP Relay forwarding

Good Day!

Setting carried out at the indicated manuals. DHCP Relay works in  1 Vlan, but it is necessary that DHCP Relay worked in 3 vlan, because there is DHCP server.

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