request chassis sib

In PTX Series (PTX3000 and PTX5000) and T Series (T640 and T1600) Routers with active PFE interfaces, when the last SIB is taken offline, a message displays that if no SIB is brought online within 10 seconds, the system will take action to address the fabric null route condition. Taking all SIBs offline in these PTX Series or T Series Routers with active PFE interfaces results in null route condition, and the software takes action to rectify this condition if it persists for more than 10 seconds. If these routers do not have active PFE interfaces, taking all SIBs offline does not result in null route condition, and the message is not displayed when the last active SIB is taken offline. For details on null route condition, see Fabric Resiliency and Degradation.