Router DHCP with L3 routed link

[burhaans28]

Hi guys, I have a router connected with layer 3 switch both of them are L3 link with 50.0.0.0 /8 i have two vlan on L3 switch vlan10(10.0.0.0 /8) and vlan 20(20.0.0.0 /8) i want to make router as my dhcp server so that it can give ip address to both vlan PC     

i tried to make subintface in router but it was not working please assist me.

Thanks a lot in advance

[MHM Cisco World · Accepted solution]

https://www.freeccnaworkbook.com/workbooks/ccna/configuring-an-ip-dhcp-helper-address

check this example it will help you

[burhaans28]

[burhaans28]

This is topology i did try to configure it but still it is not working

[MHM Cisco World · Accepted solution]

You need static route in router for each pool, this static route toward l3sw

also it better to make double check if link I share it sure help you to solve issue.

[gayansa.samarakoon · Accepted solution]

Hi  burhaans28,

Did you issue ip helper-address 30.0.0.2 command under SVI for vlan 10 and 20.

I think that will do.

Gayan

[Martin L · Accepted solution]

Yes, add ip helper-address 30.0.0.2 command under SVI. Also make sure ip routing is on as there is 1 PT switch that does not have it on by default.  You can attach your PT file here (must be in a zip format).

Regards, ML
**Please Rate All Helpful Responses **

[burhaans28]

Thanks @Martin L This solution is very helpful.

[burhaans28]

Thanks @gayansa.samarakoon  this solution is very helpful.

[burhaans28 · Accepted solution]

Thanks for your advice @MHM Cisco World, it is working now.