04-07-2008 12:23 PM - edited 03-05-2019 10:14 PM
Hi,
Im testing a new DHCP on my network and I have 3 vlans on my core.
In this core i have the port fastethernet 4/3 on vlan 3, the port 4/4 on vlan 4 and the port 4/5 on vlan 5.
The core is on the vlan default 1, its IP is 10.0.50.1 255.255.255.0 and the DHCP is on the port fastethernet4/1 and its IP is 10.0.50.2.
When a plug a host on the port 4/3 it get a IP on the subnet of vlan 3. RIGHT. But, when i plug the same host on the port 4/4 or 4/5 the host get the SAME IP address and debugging the core i got the message: "XID NOT MATCHING dhcp_for_us"
What can be happening? What should I do?
See the configuration:
vlan 3
name SITE-3
!
vlan 4
name SITE-4
!
vlan 5
name SITE-5
!
!
!
interface FastEthernet2/1
description "DHCP IS IN THIS PORT WITH IP 10.0.50.2"
!interface FastEthernet2/3
switchport access vlan 3
!
interface FastEthernet2/4
switchport access vlan 4
!
interface FastEthernet2/5
switchport access vlan 5
!
!
!
interface Vlan1
ip address 10.0.50.1 255.255.255.0
!
interface Vlan3
ip address 10.0.10.1 255.255.255.0
ip helper-address 10.0.50.2
!
interface Vlan4
ip address 10.0.20.1 255.255.255.0
ip helper-address 10.0.50.2
!
interface Vlan5
ip address 10.0.30.1 255.255.255.0
ip helper-address 10.0.50.2
Thanks.
Tauer
Solved! Go to Solution.
04-08-2008 04:42 AM
Tauer
I believe that there is an issue with using superscopes to provide DHCP for VLAN routing on switches. Can you try 3 individual scopes?
You might look at this link for a discussion about using superscope:
HTH
Rick
04-07-2008 10:47 PM
Hi Tauer,
Your switch configuration seems to be fine, I think you need to check the scope configuration carried out at your DHCP server.
Pls rate if helpful.
04-08-2008 03:30 AM
ok. Its configured with a Superscop with 3 diferents networks. What more should I care about on DHCP server? Its a microsoft DHCP server.
04-08-2008 04:42 AM
Tauer
I believe that there is an issue with using superscopes to provide DHCP for VLAN routing on switches. Can you try 3 individual scopes?
You might look at this link for a discussion about using superscope:
HTH
Rick
04-08-2008 08:05 AM
Tauer
I am glad that my information was helpful. Thank you for using the rating system to indicate that your question was resolved (and thanks for the rating). It makes the forum more useful when people can read a question and can know that there will be a response which resolved the question.
The forum is an excellent place to learn about Cisco networking. I encourage you to continue your participation in the forum.
HTH
Rick
04-08-2008 09:31 AM
Sure,
I always use the forum. I had many question solved here.
Thanks for the help, again
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