EZVPN remotes not coming up imediately after firwall reload

[relsethagen]

I have about 30 remote EZVPN 1811 routers that never come up after a firewall reload for about an hour. I have watched the EZVPN remotes and they believe they still have an IPSEC SA and they never attempt to reconnect until their IKE SA times out. Is there any way I can change this behavior so that the remotes will more rapidly recognize that their SA is invalid and negotiate a new one?

[relsethagen]

I should have said that EZVPN server is a 5520 ASA running 8.2

[rohaverm]

You can try "crypto isakmp keepalive 10 periodic" on router.

IOS code on 1811 Router?

RV