Reference Guide

Bidirectional Forwarding Detection (BFD) | 177
Figure 8-25. Establishing Sessions with VLAN Neighbors
To establish a BFD session with a VLAN neighbor:
View the established sessions using the command
show bfd neighbors, as shown in Figure 8-26.
Figure 8-26. Viewing Established Sessions for VLAN Neighbors
Changing session parameters
BFD sessions are configured with default intervals and a default role. The parameters that can be
configured are: Desired TX Interval, Required Min RX Interval, Detection Multiplier, and system role.
These parameters are configured per interface; if a configuration change is made, the change affects all
sessions on that interface.
Step Task Command Syntax Command Mode
1 Establish sessions with a VLAN neighbor.
bfd neighbor ip-address
INTERFACE VLAN
Caution: When configuring BFD on VLAN or LAG interfaces, Dell Networking recommends a minimum
value of 500 milliseconds for both the transmit and minimum receive time, which yields a final detection
time of (500ms *3) 1500 milliseconds.
FTOS(conf-if-vl-200)#bfd neighbor 2.2.3.2
FTOS(conf-if-vl-200)#do show bfd neighbors
* - Active session role
Ad Dn - Admin Down
C - CLI
I - ISIS
O - OSPF
R - Static Route (RTM)
V - VRRP
LocalAddr RemoteAddr Interface State Rx-int Tx-int Mult Clients
* 2.2.3.2 2.2.3.1 Vl 200 Up 100 100 3 C
VLAN BFD Sessions Enabled