Nortel Contivity 1100 Configuration Manual page 157

Chapter 8 Configuring IPSec mobility and persistent mode 157
Figure 32 Groups edit IPSec window
2 Scroll down to Mobility Support and select Enabled. The default is
Disabled.
3 For Max Roaming Time(seconds), enter the number of seconds. The default
is 120 seconds. Maximum roaming time (1-7200 seconds) specifies how long
the tunnel should stay in the suspended state, or time allowed for the roaming
to take effect.
IPSec Idle Timeout and rekey timeout settings must be taken into
consideration when configuring Max Roaming Time. Max Roaming Time
should not exceed the Idle Timeout interval, as with the Idle Timeout being
less then Roaming time, session could timeout prior to roaming completion.
4 For Persistence, select Enabled or Disabled. The default is Disabled.
5 For Session Persistence Time (minutes), enter the number of minutes
(1-1440). The default is 60 minutes.
6 Click on OK.
Nortel VPN Router Configuration — Basic Features