User guide

MPLS Module Installation and User Guide 5-17
Configuring RSVP-TE
Configuring RSVP-TE Protocol Parameters
To configure RSVP-TE protocol parameters, use the following command:
config mpls rsvp-te vlan [<name> | all] {hello-interval <seconds>}
{refresh-time <seconds>} {summary-refresh-time <seconds>} {bundle-time
<seconds>} {keep-multiplier <number>}
This command configures the RSVP-TE protocol parameters for the specified VLAN.
The RSVP-TE keyword
all
indicates that the configuration changes apply to all
RSVP-TE enabled VLANs.
The
hello-interval
time specifies the RSVP hello packet transmission interval. The
RSVP hello packet is used by the switch to detect when a RSVP-TE peer is no longer
reachable. If an RSVP hello packet is not received from a peer with [hello-interval *
keep-multiplier
] seconds, the peer is declared down and all RSVP sessions to and
from that peer are torn down.
The default
hello-interval
time is 0 seconds, indicating that no RSVP hello packets
are sent. The minimum and maximum hello-interval values are 0 and 60 seconds
respectively. Received RSVP hello packets are always acknowledged regardless of the
hello-interval
time setting.
The
refresh-time
specifies the interval for sending refresh path messages. RSVP
refresh messages provide “soft state” link-level keep-alive information for previously
established paths and enables the switch to detect when an LSP is no longer active.
RSVP sessions are torn down if an RSVP refresh message is not received from a
neighbor within [(
keep-multiplier
+ 0.5) * 1.5 *
refresh-time
] seconds. The default
refresh-time
is 30 seconds and the default
keep-multiplier
value is three. The
minimum and maximum
refresh-time
values are one and 36,000 seconds (or one
hour) respectively. The minimum and maximum
keep-multiplier
values are one and
255 respectively.
The
bundle-time
, specified in tenths of a second, indicates the maximum amount of
time a transmit buffer is held so that multiple RSVP messages can be bundled into a
single PDU. The default
bundle-time
is zero, indicating that RSVP message bundling is
not enabled. The
bundle-time
value may be set to any value between zero and 30 (or 3
seconds).
The
summary-refresh-time
, specified in tenths of a second, indicates the time interval
for sending summary refresh RSVP messages. The
summary-refresh-time
must be less
than the configured
refresh-time
. The default
summary-refresh-time
is zero,
indicating that no summary refresh RSVP messages are sent. The