303Parametersdelay: Specifies the warm-up timer value for dynamic route backup, in the range of 0 t o 65535seconds.Usage guidelinesThe warm-up timer introduces a delay for the dynamic route backup feature to operate after a systemstartup. Set this delay to prevent unnecessary link switchover at startup.Interfaces cannot come up until the device recovers the configuration during a reboot.Without a warm-up delay, the dynamic route backup feature dials the secondary link immediatelyafter it detects that the primary interface is down. When the primary interface comes up, the featuredials the primary link. The secondary link, if dialed up successfully, is brought down shortly after itcame up.With a warm-up delay, the dynamic route backup feature does not dial the secondary link until itdetects that the primary interface is down when the delay expires.Examples# Set the warm-up timer to 20 seconds for dynamic route backup. system-view[Sysname] dialer timer warmup 20dialer-groupUse dialer-group to assign a dialup interface to a dialer group.Use undo dialer-group to restore the default.Syntaxdialer-group group-numberundo dialer-groupDefaultA dialup interface does not belong to any dialer group.ViewsDialup interface viewPredefined user rolesnetwork-adminParametersgroup-number: Specifies a dialer group by its numberin the range of 1 t o 255.Before theassignment, you must create the dialer group by using the dialer-group rule command.Usage guidelinesA dialup interface can belong to only one dialer group. If you configure this command multiple times,the most recent configuration takes effect.You must configure this command for DDR to send packets.Examples# Assign Serial 2/1/0 to dialer group 1. system-view[Sysname] dialer-group 1 rule ip acl 3101[Sysname] interface serial 2/1/0
