radippool question

Ivan Kalik tnt at kalik.net
Fri Jul 10 20:21:23 CEST 2009

> In sqlippool.conf we define lease_time as 3600 seconds. I want to ask what
> happens after 3600 seconds.

Lease is released (ie. removed from the radippool table).

> I can see that the ip is still in radippool
> table but date is earlier from now. Does radiusd sends a packet back to
> NAS so client re-requests a new IP without a traffic disruption ?

No. This is not DHCP. Client doesn't need to renew the adress.

> Or what
> happens?

Nothing. If the address is issued to another user while the first one is
still conected NAS will not build the connection with the duplicate IP -
connection will be refused and second user will have to try again.

Lease duration in ippool is a trade-off: short eough not to block IPs in
case accounting Stop packets get lost; long enough not to expire during
the usual session. On a reliable network you can change it to a day if you
are bothered.

Ivan Kalik
Kalik Informatika ISP

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