HP FlexFabric 5930 Series Command Reference Manual page 28

Command output
1.
Field
Restart status
Restart phase
Restart Interval
SA bit
Total number of interfaces
Number of waiting LSPs
T2 remaining time
T1 remaining time
RA received
Description
Restart state of the device:
•
Restarting—The device is rebooting ISIS-SPB or performing an
active/standby MPU switchover. In this state, the device can forward
traffic because its FIB is usable.
•
Starting—The device is rebooting. In this state, the device cannot forward
traffic because the FIB is not usable.
•
Complete—The GR process is complete. The device can forward traffic
normally.
Restart phase:
•
Initialization—ISIS-SPB Graceful Restart is initialized.
•
LSDB synchronization—Peer ISIS-SPB processes are synchronizing LSDBs.
•
LSP stability—The local LSDB is converging.
•
LSP generation—ISIS-SPB generates and floods LSPs.
•
First SPF computation—ISIS-SPB performs the first SPF computation.
•
Finish—SPF computation is finished.
The maximum adjacency hold time (in seconds). If the restarting device fails to
complete restarting before this timer expires, the peer ISIS-SPB process
removes the adjacency with the restarting ISIS-SPB.
This timer is configurable with the graceful-restart t2 command.
Support for setting the SA bit in the Restart TLV sent to the neighbor:
•
Supported—The device performs the following actions:
○
When the FIB is not usable, the device sets the SA bit in the hello
messages so the neighbor will not advertise its adjacency with the
restarting device.
○
When the routing table is usable, the device clears the SA bit in the
hello messages so the neighbor will advertise its adjacency with the
restarting device.
•
Not supported—The device clears the SA bit in the hello messages so the
neighbor will always advertise its adjacency with the restarting device.
Number of SPBM-enabled interfaces.
Number of LSPs that are waiting to be synchronized with the GR helper for
completing LSDB synchronization.
The remaining time (in seconds) of the T2 timer.
If the restarting device fails to complete restarting before this timer expires, the
neighbor removes the adjacency with the restarting device.
Remaining time (in seconds) of the T1 timer on the interface.
The T1 timer sets the interval for the restarting device to retransmit hello
messages with the RR bit set (restart request messages). The T1 timer is not user
configurable.
The restarting device retransmits a restart request message to the neighbor if it
does not receive an acknowledgment for a restart request (hello message with
the RA bit set) before the T1 timer expires.
Whether the interface received an ISIS-SPB hello with the RA flag from the
neighbor device.
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