cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
Highlighted
New Contributor

DHCP relay help with two NV6300 routers

Jump to solution

I am trying to understand DHCP relay better. Basically I have two firmware updated NV6310 model routers with the first one having a DHCP pool. What I would like to see is if I can make DHCP (from router one) work behind router two, interface ethernet 0/1. I have tried several command combinations with no luck. Right now I have very basic configs and can ping across all interfaces.

ROUTER ONE:

ip dhcp pool "Test Pool"

  network 192.168.46.0 255.255.255.240

  dns-server 8.8.8.8 8.8.4.4

  default-router 192.168.47.254

  lease 0 0 5

!

!

!

interface eth 0/1 - ROUTER 2 ETH PORT 2 FACING

  ip address  192.168.31.254  255.255.240.0

  no shutdown

!

!

interface eth 0/2 - NOT CURRENTLY USED

  no ip address

  shutdown

!

!     

ip route 192.168.46.0 255.255.254.0 192.168.19.2

ROUTER TWO:

interface eth 0/1 - LAPTOP FACING

  ip address  192.168.47.254  255.255.254.0

  ip helper-address  192.168.31.254

  no shutdown

!     

!

interface eth 0/2 - ROUTER 1 ETH PORT 1 FACING

  ip address  192.168.19.2  255.255.240.0

  no shutdown

!

!

ip route 0.0.0.0 0.0.0.0 192.168.31.254

0 Kudos
Reply
1 Solution

Accepted Solutions
Highlighted
Valued Contributor II
Valued Contributor II

Re: DHCP relay help with two NV6300 routers

Jump to solution

There is a newer command,

On Router 2, remove this command from your eth 0/1 interface: ip helper-address 192.168.31.254

And add this:

ip dhcp relay destination 192.168.31.254

Let me know how that works.

-Mark

View solution in original post

0 Kudos
Reply
4 Replies
Highlighted
Valued Contributor II
Valued Contributor II

Re: DHCP relay help with two NV6300 routers

Jump to solution

There is a newer command,

On Router 2, remove this command from your eth 0/1 interface: ip helper-address 192.168.31.254

And add this:

ip dhcp relay destination 192.168.31.254

Let me know how that works.

-Mark

View solution in original post

0 Kudos
Reply
Highlighted
New Contributor

Re: DHCP relay help with two NV6300 routers

Jump to solution

Unfortunately that did not do the trick to make DHCP work.

0 Kudos
Reply
Highlighted
New Contributor

Re: DHCP relay help with two NV6300 routers

Jump to solution

It’s working now. I just realized I had the subnet mask wrong in the DHCP pool. Thanks!

0 Kudos
Reply
Highlighted
Valued Contributor II
Valued Contributor II

Re: DHCP relay help with two NV6300 routers

Jump to solution

Good deal! Thanks for the update!

-Mark

0 Kudos
Reply