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Beginner

DHCP Relay in Cisco Packet Tracer

Hi all, Im a beginner to CPT and i am hoping someone can assist me for an assignment coming up.

 

I am having trouble configuring a DHCP relay from a DHCP server to a network consisting of multiple routers, with their devices on their own networks. The three main issues I am having are:

  1. When one of the networks connected directly to the server has DHCP configured, the other network looses connection and can o longer reach the server. These two networks are outlined in blue in the png attached
  2. I am unsure whether or not there is a way to chain DHCP relays between routers, in which the connection is as follows: DHCP server -> router/network 1 -> router/network 2. I have been unable to configure DHCP in this second network when attempting to relay between multiple routers.
  3. I have a broken connection (red in the png) attempting to connect the two networks as outlines in q2. I am unsure where this is wrong.

I have attached both the .pkt and .png files. Any help would be greatly appreciated as I have struggled to find help for this anywhere. Cheers

1 ACCEPTED SOLUTION

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VIP Expert

Hello,

 

the helper addresses go on the LAN interfaces. I corrected a lot of wrong IP addressing, find attached the working file.

View solution in original post

2 REPLIES 2
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VIP Expert

Hello,

 

the helper addresses go on the LAN interfaces. I corrected a lot of wrong IP addressing, find attached the working file.

View solution in original post

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Thank you so much for your help. I have spent the morning attempting to copy your configuration changes but no matter what ive tried, i just cant seem to get PC4 to obtain IP through DHCP. I played around with the network you made and it works perfectly i just cant seem to figure out what ive done wrong when implementing it myself.

The connection between Router5 and its switch also confused me, as im not to sure what IP to configure fa1/0 to. I would also assume there would be further steps (ip helper configurations) to send DHCP requests from Router1 to Router5 and then to PC5.

If you could provide further assistance I would greatly appreciate it but youve helped me more than enough already. Thanks heaps.

 

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