Bfd Next Hop Verification Configuration Example - Juniper IGP - CONFIGURATION GUIDE V11.1.X Configuration Manual

JUNOSe 11.0.x IP, IPv6, and IGP Configuration Guide

BFD Next Hop Verification Configuration Example

To enable BFD next hop verification between two adjacent peers, you configure each
peer as follows:
1.
2.
ip route verify bfd-liveness-detection
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IP Routing
Configure peer A with the next hop address of peer B along with the desired
intervals and keyword options.
host1(config)#ip route 192.1.1.0 255.255.255.0 192.1.2.1 verify
bfd-liveness-detection minimum-interval 500 multiplier 3 last-resort
Configure peer B with the next hop address of peer A along with the desired
intervals and keyword options.
host1(config)#ip route 192.1.2.1 255.255.255.0 192.1.1.0 verify
bfd-liveness-detection minimum-interval 300 multiplier 3
Use to enable BFD on a static route.
Use the minimum-interval keyword to specify a value in the range 100–65535
milliseconds. This keyword defines both the minimum receive interval and
minimum transmit interval using the same value.
Use the minimum-receive-interval keyword to specify a minimum receive
interval value in the range 100–65535 milliseconds.
Use the minimum-transmit-interval keyword to specify a minimum transmit
interval value in the range 100–65535 milliseconds.
Use the multiplier keyword to specify a multiplier number in the range 1–255.
Optionally, you can include the last-resort keyword when you use the verify
bfd-liveness-detection keywords to instruct the router to install the static route
in the routing table even if the specified BFD operation is currently unreachable,
provided that no other static route to the same network prefix is available.
Change parameters at any time without stopping or restarting the existing session;
BFD automatically adjusts to the new parameter value. However, no changes to
BFD parameters take place until the values resynchronize with each BFD peer.
Example 1 Next hop address and last resort
host1(config)#ip route 192.56.15.23 255.255.255.0 192.66.0.1 verify
bfd-liveness-detection minimum-interval 800 multiplier 2 last-resort
Example 2 Next hop address and interface
host1(config)#ip route 192.56.15.24 255.255.255.0 192.66.0.2 fast 6/0 verify
bfd-liveness-detection
Example 3 Next hop address with different receive and transmit intervals
host1(config)#ip route 192.56.15.23 255.255.255.0 192.66.0.1 verify
bfd-liveness-detection minimum-receive-interval 800 minimum-transmit-interval
300 multiplier 2 last-resort