Establishing A Backup Crlsp By Using The Path Calculated By Pces - HP FlexNetwork HSR6600 Configuration Manual

Establishing a backup CRLSP by using the path calculated
by PCEs
Perform this task to enable the specified PCEs to calculate a backup CRLSP for the PCC. When the
primary CRLSP fails, traffic is switched to the backup CRLSP to ensure continuous traffic forwarding.
To establish a backup CRLSP by using the path calculated by PCEs:
Step
1. Enter system view.
2. Enter MPLS TE tunnel
interface view.
3. Enable tunnel backup
and specify the backup
mode.
4. Establish a backup
CRLSP by using the path
calculated by PCEs.
Configuring stateful PCE on a PCC
For a PCC and a PCE to establish a stateful PCEP session, you must specify the same device type
(active stateful or passive stateful) for the two devices.
•
If they are configured as passive-stateful devices, the PCE knows all CRLSPs maintained by
the PCC but does not accept delegation requests sent by the PCC.
•
If they are configured as active-stateful devices, the PCC can delegate CRLSPs to the PCE. If
multiple PCEs are available for CRLSP delegation in the network, the PCC chooses the PCE
with the highest delegation priority.
If a PCEP session between a PCC and a PCE terminates, the PCC waits for the redelegation timeout
interval before it redelegates the CRLSP. If the PCEP session is re-established within the
redelegation timeout interval, the PCC redelegates the CRLSP to the PCE. If the PCEP session fails
to be re-established within the interval, the PCC redelegates the CRLSP to another PCE that has a
lower delegation priority.
If the redelegation fails and the CRLSP state timeout expires, the PCC uses the path calculated
locally to establish the CRLSP.
To configure stateful PCE on a PCC:
Step
1. Enter system view.
2. Enter MPLS TE view.
3. Configure the PCEP device
type as active stateful or
passive stateful.
Command
system-view
interface tunnel tunnel-number
[ mode mpls-te ]
mpls te backup { hot-standby |
ordinary }
mpls te backup-path preference
value dynamic pce
[ ip-address ]&<0-8>
Command
system-view
mpls te
pcep type { active-stateful |
passive-stateful }
96
Remarks
N/A
N/A
By default, tunnel backup is
disabled.
By default, the automatically
calculated path is used to
establish a backup CRLSP.
After this command is executed,
the local device acts as a PCC
and establishes PCEP sessions
to the specified PCEs. If you do
not specify a PCE, the local
device establishes PCEP
sessions to all discovered PCEs.
Remarks
N/A
N/A
By default, the PCEP device type
is stateless.