Configuring Refresh Reduction; Configuring Acl Based Prefix Filtering - Cisco NCS 5500 Series Configuration Manual

Configuring RSVP for MPLS-TE
Reason: N/A
Recovery State: DONE
Number of Interface neighbors: 1
address: 192.168.55.0
Restart time: 120 seconds
Restart timer: Not running
Recovery timer: Not running
Hello interval: 5000 milliseconds
Related Topics
• RSVP for MPLS-TE Features- Details, on page 34

Configuring Refresh Reduction

RSVP Refresh Reduction improves the reliability of Resource Reservation Protocol (RSVP) signaling to
enhance network performance and message delivery and it is enabled by default. Refresh reduction is used
with a neighbor only if the neighbor supports it. You can also disable refresh reduction on an interface if you
want.
Configuration Example
The example shows how to configure the various parameters available for the refresh reduction feature.
The following parameters are configured to change their default values:
• refresh interval
• number of refresh messages a node can miss
• retransmit time
• acknowledgment hold time
• acknowledgment message size
• refresh message summary size
RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# rsvp
RP/0/RP0/CPU0:router(config-rsvp)# interface HundredGigabitEthernet 0/0/0/3
RP/0/RP0/CPU0:router(config-rsvp-if)# signalling refresh interval 40
RP/0/RP0/CPU0:router(config-rsvp-if)# signalling refresh missed 6
RP/0/RP0/CPU0:router(config-rsvp-if)# signalling refresh reduction reliable retransmit-time
2000
RP/0/RP0/CPU0:router(config-rsvp-if)# signalling refresh reduction reliable ack-hold-time
1000
RP/0/RP0/CPU0:router(config-rsvp-if)# signalling refresh reduction reliable ack-max-size
1000
RP/0/RP0/CPU0:router(config-rsvp-if)# signalling refresh reduction summary
RP/0/RP0/CPU0:router(config)# commit

Configuring ACL Based Prefix Filtering

You can configure extended access lists (ACLs) to forward, drop, or perform normal processing on RSVP
router-alert (RA) packets. For each incoming RSVP RA packet, RSVP inspects the IP header and attempts
to match the source or destination IP addresses with a prefix configured in an extended ACL. If there is no
explicit permit or explicit deny, the ACL infrastructure returns an implicit deny by default. By default, RSVP
processes the packet if the ACL match yields an implicit (default) deny.
MPLS Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.2.x
32
Recovery time: 120 seconds
Maximum allowed missed Hello messages: 4
Implementing RSVP for MPLS-TE
max-size 1500