03-16-2009 03:20 AM - edited 03-06-2019 04:36 AM
Hi all,
We have two ip-helper on our vlan 5.
It seems to take the first one every time and the DHCP scope are always full.
Any sugestion what we should do?
interface Vlan5
ip address 10.12.4.2 255.255.252.0
ip helper-address 10.12.1.41
ip helper-address 10.12.1.42
Regards Jan
03-16-2009 03:23 AM
Jan
The router/L3 switch uses both ip-helper's at the same time so it will forward a request to both DHCP servers. If you have split the scope for vlan 5 across both servers then it shouldn't matter if the first one has run out as the client will receive an offer from the second DHCP server.
Jon
03-16-2009 03:27 AM
Jon,
The
ip helper-address 10.12.1.41 = 10.12.6.1 - 254
ip helper-address 10.12.1.42 = 10.12.7.1 - 254
So it use both every time for request ip number... strange... why the 41 is full every time.
Jan
03-16-2009 03:37 AM
Jan
Usually the client will use the first DHCP offer it gets. Is there any difference between the servers in terms of
1) CPU usuage
2) Memory
3) Network utilisation on the NIC.
Perhaps the .41 server is just a faster server to respond.
Jon
03-16-2009 03:39 AM
There is, 41 is faster then 42.
Thanks Jan
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