Re: NetReg: Lease Search Question

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From: Robert Lowe (Robert.H.Lowe@lawrence.edu)
Date: Fri Aug 22 2003 - 10:06:31 CDT


IIRC, you're using the CIDR kit, but correct me if I'm wrong...

The only way a registered MAC address is associated with a subnet is
through the recorded unregistered IP address in the comment part
of the entry in dhcp.conf[.new]. That is the reason you will never
find a student in their new subnet, when they registered in a different
one. In the CIDR kit, you still should be able to find them through
either the lease manager, or clicking on the encirled "L" in the subnet
overview of the subnet on which that student registered. All lease
lookups happen based on MAC address.

Is this a problem? Perhaps, but there seem to be a few approaches to
fix this: 1) edit dhcpd.conf.new directly and change the unregistered
IP address in the comment to one associated with the new subnet (pick
any one you like, it doesn't matter), 2) delete the entry (via admin.cgi)
and have the student re-registered in the new subnet, or 3) live with it,
but force all students to re-register every term/quarter/semester, since
most housing/subnet moves would happen then. The later seems to be the
practice of several people here.

Does that help?

-Robert

Steve Hess wrote:
> If a student registers in one subnet and moves to another, what
> is the preferred tool to locate that student. I had assumed, perhaps
> incorrectly, that using Subnet Overview I could see all users in a
> subnet, both those who reigstered in that subnet and those who were
> active there but didn't register there. When that didn't work I went to
> looking based on username. I can find the user but not the lease, in
> fact no leases are listed. Same thing with a MAC Address search, the
> user is found and it says there are leases in the stats header but it
> doesn't list any leases. The only way I seem to be able to find the
> Username/Lease association is through Lease Manager. It shows me the
> active lease as well as the previous leases from the original subnet.
> This will be our first year using NetReg and I want to ensure
> this behavior is normal.
>
>
> Thanks,
>
> Steve
>
>
>
>
> ---------------------------------------------------------------
> Steve Hess
> Network/Telecommunications Technician
> Wheaton College
> Phone: (508) 286-3404
> Fax: (508) 286-8270
> ---------------------------------------------------------------

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