Configuring the JUNOS Software to Resynchronize FPC Sequence Numbers with Active FPCs when an FPC Comes Online
On M320, T320, T640, T1600, and TX Matrix routers, when you bring a Flexible PIC Concentrator (FPC) online, the sequence number on the FPC may not be synchronized with the other active FPCs in the router, which may result in the loss of a small amount of initial traffic.
To avoid any traffic loss, include the fpc-resync statement at the [edit chassis] hierarchy level. This ensures that the sequence numbers of the FPC that is brought online is resynchronized with the other active FPCs in the router.
[edit chassis]fpc-resync;
