161
77B
Configuring RSVP Srefresh and reliable RSVP
message delivery
After Srefresh is enabled, RSVP maintains the path and reservation states by sending Srefresh
messages rather than standard refresh messages.
To configure Srefresh and reliable RSVP message delivery:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface
interface-type
interface-number
N/A
3.
Enable Srefresh and reliable
RSVP message delivery.
rsvp reduction srefresh
[
reliability
]
By default, Srefresh and reliable
RSVP message delivery are
disabled.
4.
Set the retransmission
increment value for reliable
RSVP message delivery.
rsvp reduction retransmit
increment
increment-value
By default, the RSVP message
retransmission increment is 1.
This command takes effect after
reliable RSVP message delivery
is enabled by using the
rsvp
reduction srefresh
reliability
command.
5.
Set the retransmission
interval for reliable RSVP
message delivery.
rsvp reduction retransmit
interval interval
By default, the RSVP message
retransmission interval is 500
milliseconds.
This command takes effect after
reliable RSVP message delivery
is enabled by using the
rsvp
reduction srefresh
reliability
command.
78B
Configuring RSVP hello extension
When RSVP hello extension is enabled on an interface, the device receives and sends hello
messages through the interface to detect the neighbor's status.
If the device receives a hello request from the neighbor, the device replies with a hello ACK message.
If the device receives no hello request from the neighbor within the interval specified by the
hello
interval
command, the device sends hello requests to the neighbor.
When the number of consecutive lost hellos or erroneous hellos from the neighbor reaches the
maximum (specified by the
hello lost
command), the device determines the neighbor is in fault. If
GR is configured, the device acts as a GR helper to help the neighbor to restart. If FRR is configured,
the device performs an FRR. For more information about FRR, see "
755H
Configuring MPLS TE
."
To configure RSVP hello extension:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter RSVP view.
rsvp
N/A
3.
Set the maximum number of
consecutive lost or
hello lost times
By default, the maximum number
is 4.