is Huawei NE40E router Switchover with graceful restart for LDP feature work with J router?
the router and its neighbors (GR Restarter and GR Helper) roles are relative ,when one GR Router is restarted, its neighbors can be aware of the restart process a change in the graceful restart capabilities requires resetting the LDP session, since the
new information needs to be signaled in a new initialization message
TLV is used in notification messages with Shutdown Status Code. an LSR receiving a shutdown notification with the optional FT Session TLV parameter, which does not support it, will ignore the FT Session TLV parameter but process the notification , LDP of NE40s follow RFC3478 and J equipments can not understand the TLV notification then they cannot work with each other.