R3303-HP HSR6800 Routers MPLS Configuration Guide

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Ste
p
Command Remarks
3. Configure a DSCP value for
outgoing RSVP packets.
mpls rsvp-te dscp dscp-value
By default, the DSCP value for
outgoing RSVP packets is 48.
Configuring RSVP-TE GR
The RSVP-TE GR function depends on the extended hello capability of RSVP-TE. Enable the extended hello
capability of RSVP-TE before configuring RSVP-TE GR.
To configure RSVP-TE GR on each device to act as the GR restarter or a GR helper:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter MPLS view.
mpls N/A
3. Enable global RSVP hello
extension.
mpls rsvp-te hello Disabled by default.
4. Enable MPLS RSVP-TE GR.
mpls rsvp-te graceful-restart Disabled by default.
5. Set the RSVP-TE GR restart
timer.
mpls rsvp-te timer graceful-restart
restart restart-time
Optional.
120 seconds by default.
6. Set the RSVP-TE GR recovery
timer.
mpls rsvp-te timer graceful-restart
recovery recovery-time
Optional.
300 seconds by default.
7. Enter interface view of MPLS
TE link.
interface interface-type
interface-number
N/A
8. Enable RSVP hello extension
for the interface.
mpls rsvp-te hello Disabled by default.
Configuring cooperation of RSVP-TE and BFD
On an MPLS TE network, if a link between neighboring LSRs fails, the corresponding MPLS TE tunnel will
fail to forward packets. MPLS TE itself cannot detect a link failure in time. To address this issue, you can
enable Bidirectional Forwarding Detection (BFD) for RSVP-TE on the two peers of an RSVP-TE tunnel. Then,
MPLS TE can be quickly aware of link failures between the peers, making sure that data can be switched
from the main path to the backup path.
To configure BFD for an RSVP-TE-enabled interface:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter the view of an MPLS
RSVP-TE enabled interface.
interface interface-type
interface-number
N/A
3. Enable BFD on the RSVP-TE
enabled interface.
mpls rsvp-te bfd enable Disabled by default.