MPLS and RSVP
7210 SAS M, T, X, R6, Mxp MPLS Configuration Guide Page 165
refresh-reduction-over-bypass
Syntax refresh-reduction-over-bypass [enable | disable]
Context config>router>rsvp
Description This command enables the refresh reduction capabilities over all bypass tunnels originating on this
7210 SAS
PLR node or terminating on this
7210 SAS
Merge Point (MP) node.
By default, this is disabled. Since a bypass tunnel may merge with the primary LSP path in a node
downstream of the next-hop, there is no direct interface between the PLR and the MP node and it is
possible the latter will not accept summary refresh messages received over the bypass.
When disabled, the node as a PLR or MP will not set the “Refresh-Reduction-Capable” bit on RSVP
messages pertaining to LSP paths tunneled over the bypass. It will also not send Message-ID in
RSVP messages. This effectively disables summary refresh.
Default disable
rapid-retransmit-time
Syntax rapid-retransmit-time hundred-milliseconds
no rapid-retransmit-time
Context config>router>rsvp
Description This command defines the value of the Rapid Retransmission Interval. It is used in the re-
transmission mechanism to handle unacknowledged message_id objects and is based on an
exponential back-off timer.
Re-transmission interval of a RSVP message with the same message_id = 2 * rapid-retransmit-time
interval of time.
The node stops re-transmission of unacknowledged RSVP messages:
• If the updated back-off interval exceeds the value of the regular refresh interval.
• If the number of re-transmissions reaches the value of the rapid-retry-limit parameter, which-
ever comes first.
The Rapid Retransmission Interval must be smaller than the regular refresh interval configured in
config>router>rsvp>refresh-time.
The no form of this command reverts to the default value.
Default 5
Parameters hundred-milliseconds — Specifies the rapid retransmission interval.
Values 1 – 100, in units of 100 msec.
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