K
KDawg44
Guest
Hello,
We have three scopes set up, subnet 1, 2, & 3, on a single DHCP
server. We have a VLAN for each subnet. However, if a machine moves
from an office on subnet 1, to the conference room on subnet 2, the
machine holds the old subnet 1 address. It will not give up the
address on reboot, disable/reenable the NIC, release/renew, anything.
The only way to get the address to be given up and get an address on
the new subnet it to manually go to the DHCP server, delete the lease,
set a static address on the NIC on the machine and ping, then set the
NIC back to DHCP. At this point it will get the correct address on
Subnet 2. Then this must be repeated when they go from the conference
room back to their office on Subnet 1.
This happens whenever a machine changes subnets. All three subnets
are configured as superscopes on a single DHCP server. I was told we
used superscopes because we have a single DHCP server on Subnet 1 that
hands out all addresses.
Anyone have any idea why this is occurring? I feel that it may have
to do with the fact that these are superscopes, thus the pool in each
scope being able to get handed an address from the pool across
multiple subnets. But since I am battling with another person on this
I was hoping for some feedback.
Thanks.
Kevin
We have three scopes set up, subnet 1, 2, & 3, on a single DHCP
server. We have a VLAN for each subnet. However, if a machine moves
from an office on subnet 1, to the conference room on subnet 2, the
machine holds the old subnet 1 address. It will not give up the
address on reboot, disable/reenable the NIC, release/renew, anything.
The only way to get the address to be given up and get an address on
the new subnet it to manually go to the DHCP server, delete the lease,
set a static address on the NIC on the machine and ping, then set the
NIC back to DHCP. At this point it will get the correct address on
Subnet 2. Then this must be repeated when they go from the conference
room back to their office on Subnet 1.
This happens whenever a machine changes subnets. All three subnets
are configured as superscopes on a single DHCP server. I was told we
used superscopes because we have a single DHCP server on Subnet 1 that
hands out all addresses.
Anyone have any idea why this is occurring? I feel that it may have
to do with the fact that these are superscopes, thus the pool in each
scope being able to get handed an address from the pool across
multiple subnets. But since I am battling with another person on this
I was hoping for some feedback.
Thanks.
Kevin