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Known Limitations

Learn about limitations in this release for PTX Series routers.

For the most complete and latest information about known Junos OS Evolved defects, use the Juniper Networks online Junos Problem Report Search application.

MPLS

  • Traceroute in MPLS OAM might fail with unreachable in ECMP case when a topology has multiple ECMP paths in each transit router. This is because destination address is not available. Destination address is computed using base address and bitmap index (available for that leg). Junos OS Evolved currently supports 64 bitvector size. Each transit ECMP legs consumes available bitmap indexes in the echo request packet. When all the bitmap indexes are consumed by the previous transit routers and ECMP legs, the bitmap indexes are not available for other ECMP legs. Therefore, multipath information TLV bitmap is zero leading to unreachable issue as no destination address is available. PR1699685

Routing Protocols

  • When you do not configure routing-options transport-class fallback none statement, you do not configure more than 10 transport-classes. PR1648490

User Interface and Configuration

  • On all Junos OS Evolved platforms configured with persist-group-inheritance, which is enabled by default from Junos OS Evolved Release 19.4R3 and later, might lead to mustd process crash in highly scaled configuration.PR1638847