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Heinz Kern
Beginner

Redundant DHCP Relay in ACI

Hello,

i am wondering what is the best way to provide redundant DHCP-Setup in ACI.

it is important to understand that in our environment the dhcp-servers are not a cluster but standalone machines. therefore we need to add 2 of them to the Bridge Domain.

 

how to do this best?

  1. 2x DHCP Relay Labels in the BD and every Relay Label contains 1x DHCP Server
  2. 1 x DHCPE Relay Label in the BD and this Relay label contains 2x DHCP Server. i think this is the best way...BUT in orur scenario the DHCP Servers are externa reachable via L3out...and putitng there 2 servers via one L3out seems not to be possible.
  3. Something else

 

thanks for you suggestions

1 ACCEPTED SOLUTION

Accepted Solutions
Robert Burns
Cisco Employee

A single Relay label can only be applied to a single path due to the nature of how the object DN is constructed.  Since you have a single path (L3Out) and 2 unique DHCP Servers behind it, you'd need to configure two unique DHCP Relay labels, each with one of the DHCP server targets pointing to the same L3out path.

Robert

View solution in original post

2 REPLIES 2
Robert Burns
Cisco Employee

A single Relay label can only be applied to a single path due to the nature of how the object DN is constructed.  Since you have a single path (L3Out) and 2 unique DHCP Servers behind it, you'd need to configure two unique DHCP Relay labels, each with one of the DHCP server targets pointing to the same L3out path.

Robert

Heinz Kern
Beginner

thanks for the explanation. this makes it clear