Configuring Bfd For Is-Is - Dell Force10 C150 Configuration Manual

Configuring BFD for IS-IS

BFD for IS-IS is supported on platform:
When using BFD with IS-IS, the IS-IS protocol registers with the BFD manager on the RPM. BFD
sessions are then established with all neighboring interfaces participating in IS-IS. If a neighboring
interface fails, the BFD agent on the line card notifies the BFD manager, which in turn notifies the IS-IS
protocol that a link state change occurred.
Configuring BFD for IS-IS is a two-step process:
1. Enable BFD globally. See
2. Establish sessions for all or particular IS-IS neighbors. See page 193.
Related configuration tasks
• Change session parameters. See page 194.
• Disable BFD sessions for IS-IS. See page 195.
Establishing sessions with IS-IS neighbors
BFD sessions can be established for all IS-IS neighbors at once or sessions can be established for all
neighbors out of a specific interface.
Figure 9-20. Establishing Sessions with IS-IS Neighbors
Force10(conf )# router isis
Force10(conf-router_isis)# net 02.1921.6800.2002.00
Force10(conf-router_isis)# interface gigabitethernet 2/1
Force10(conf-if-gi-2/1)#ip address 2.2.2.2/24
Force10(config-if-gi-2/1)# ip router isis
Force10(config-if-gi-2/1)# exit
Force10(conf )# router isis
Force10(conf-router_isis)# bfd all-neighbors
AREA 1
R1: Level 1 - 2
Force10(conf )# router isis
Force10(conf-router_isis)# net 01.1921.6800.1001.00
Force10(conf-router_isis)# interface gigabitethernet 4/24
Force10(config-if-gi-4/24)# ip address 2.2.2.1/24
Force10(config-if-gi-4/24)# ip router isis
Force10(config-if-gi-4/24)# exit
Force10(conf )# router isis
Force10(conf-router_isis)# bfd all-neighbors
To establish BFD with all IS-IS neighbors:
Step Task
1 Establish sessions with all IS-IS neighbors.
e
Enabling BFD globally on page
AREA 2
R2: Level 2
2/1
4/24
Force10(conf )# router isis
Force10(conf-router_isis)# net 03.1921.6800.3003.00
Force10(conf-router_isis)# interface gigabitethernet 6/0
Force10(conf-if-gi-6/0)#ip address 2.2.3.2/24
Force10(config-if-gi-6/0)# ip router isis
Force10(config-if-gi-6/0)# exit
Force10(conf )# router isis
Force10(conf-router_isis)# bfd all-neighbors
176.
Force10(conf-router_isis)# interface gigabitethernet 2/2
Force10(conf-if-gi-2/2)#ip address 2.2.3.1/24
Force10(config-if-gi-2/2)# ip router isis
Force10(config-if-gi-2/2)# exit
Force10(conf )# router isis
Force10(conf-router_isis)# bfd all-neighbors
AREA 3
R3: Level 1 - 2
2/2
6/0
6/1
Non-IS-IS Participating System
Command Syntax
bfd all-neighbors
Force10(conf-router_isis)# interface gigabitethernet 6/1
Force10(conf-if-gi-6/1)#ip address 2.2.4.1/24
fnC0041mp
Command Mode
ROUTER-ISIS
Bidirectional Forwarding Detection | 193