Outstanding Issues

This section lists outstanding issues with the M20 router. For information about software issues, see the JUNOS Internet Software Release Notes.

• Combinations of PICs—On Juniper Networks routers, you can typically install any combination of Physical Interface Cards (PICs) on a single Enhanced Flexible PIC Concentrator (FPC). With JUNOS Release 6.3, on M5, M10, M20, M40, M40e, and M160 routers, there are some combinations of PICs that cannot be installed together on the same Enhanced FPC. If you are upgrading to JUNOS 6.3 on one of the systems mentioned above and have different PIC types on a single FPC, please consult Technical Bulletin PSN-2004-04-005 on the Juniper Networks Support Web site http://www.juniper.net/support/.