H3C Technologies H3C S6800 Series Switches - Manual (Page 157)

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Step Command Remarks
5. Configure the retransmission
interval for reliable RSVP
message delivery.
rsvp reduction retransmit interval
retrans-timer-value
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.
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 serves 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 " 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. Configure the maximum
number of consecutive lost or
erroneous hellos.
hello lost times
By default, the maximum number is
4.
4. Configure the interval for
sending hello requests.
hello interval interval
By default, hello requests are sent
every 5 seconds.
5. Return to system view. quit N/A
6. Enter interface view.
interface interface-type
interface-number
N/A
7. Enable RSVP hello extension. rsvp hello enable
By default, RSVP hello extension is
disabled.
Configuring RSVP authentication
RSVP adopts hop-by-hop authentication to prevent fake resource reservation requests from occupying
network resources. The interfaces at the two ends of a link must use the same authentication key.
RSVP authentication can be configured in the following views:
• RSVP view—Configuration applies to all RSVP security associations.