Dhcp not working
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11-03-2017 04:59 AM - edited 03-08-2019 12:36 PM
Hi I have 2 sites connected with fiber and one i can get DHCP working for vlans the second site i can get DHCP for the main scopes but not for the vlans, Can anyone help?
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11-03-2017 05:42 AM
As Mark indicated, if the sites are connected by a layer 2 link, you don't need a layer 3 interface at both sites. You need to trunk one site to the other and configure the layer 3 interface at only one site.
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11-03-2017 06:36 AM
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11-03-2017 07:03 AM
switchport mode trunk
spanning-tree link-type point-to-point
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11-03-2017 07:13 AM
Hello
Just like to add - you dont need the helper address either - you have a L3 interface on the same subnet as the dhcp server?
dhcp server = 172.19.64.19
int vlan 10
172.19.64.X/22
res
Paul
Please rate and mark as an accepted solution if you have found any of the information provided useful.
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Kind Regards
Paul
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11-03-2017 07:39 AM
I want to add vlan 202
192.168.202.0
and vlan 8
192.168.8.0
to the dhcp server and assign to clients on this network
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11-03-2017 07:43 AM
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11-03-2017 09:10 AM
Have you removed the layer 3 SVI (VLAN) interfaces from the site where the DHCP server is NOT residing ?
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11-03-2017 09:15 AM
No i have all vlan with SVI
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11-06-2017 02:19 AM
Hi
Should i have layer 3 between sites?
thanks

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