124• The backup slot takes over when the primary slot becomes unavailable. The backup slotcontinues to process traffic for the interface after the primary slot becomes available again. Theswitchover will not occur until the backup slot becomes unavailable.• When no specified traffic processing slots are available, the traffic is processed on the slot atwhich it arrives. Then, the processing slot that first becomes available again takes over.If you do not specifya primary or a backup traffic processingslot for an i nterface, traffic on thatinterface is processed on the slot at which the traffic arrives.Examples# (Distributed devices in standalone mode.) Specify slot 2 as the primary traffic processing slot forVirtual-PPP 10. Specify slot 3 as the backup traffic processing slot for Virtual-PPP 10. system-view[Sysname] interface virtual-ppp 10[Sysname-Virtual-PPP10] service slot 2[Sysname-Virtual-PPP10] service standby slot 3Related commandsserviceshutdownUse shutdown to shut down a virtual PPP interface.Use undo shutdown to bring up a virtual PPP interface.Syntaxshutdownundo shutdownDefaultA virtual PPP interface is up.ViewsVirtual PPP interface viewPredefined user rolesnetwork-adminExamples# Shut down Virtual-PPP 10. system-view[Sysname] interface virtual-ppp 10[Sysname-Virtual-PPP10] shutdownsource-ipUse source-ip to configure the source IP address of L2TP tunnel packets.Use undo source-ip to restore the default.Syntaxsource-ip ip-addressundo source-ip
