Users Guide

LocalAddr RemoteAddr Interface State Rx-int Tx-int Mult Clients
* 2.2.5.1 2.2.5.2 Te 4/25 Down 1000 1000 3 V
To view session state information, use the show vrrp command.
The bold line shows the VRRP BFD session.
DellEMC(conf-if-te-4/25)#do show vrrp
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TenGigabitEthernet 4/1, VRID: 1, Net: 2.2.5.1
VRF:0 default
State: Backup, Priority: 1, Master: 2.2.5.2
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 95, Bad pkts rcvd: 0, Adv sent: 933, Gratuitous ARP sent: 3
Virtual MAC address:
00:00:5e:00:01:01
Virtual IP address:
2.2.5.4
Authentication: (none)
BFD Neighbors:
RemoteAddr State
2.2.5.2 Up
Changing VRRP Session Parameters
BFD sessions are configured with default intervals and a default role.
The parameters that you can configure are: Desired TX Interval, Required Min RX Interval, Detection Multiplier, and system role.
You can change parameters for all VRRP sessions or for a particular neighbor.
To change parameters for all VRRP sessions or for a particular VRRP session, use the following commands.
● Change parameters for all VRRP sessions.
INTERFACE mode
vrrp bfd all-neighbors interval milliseconds min_rx milliseconds multiplier value role
[active | passive]
● Change parameters for a particular VRRP session.
INTERFACE mode
vrrp bfd neighbor ip-address interval milliseconds min_rx milliseconds multiplier value
role [active | passive]
To view session parameters, use the show bfd neighbors detail command.
Disabling BFD for VRRP
If you disable any or all VRRP sessions, the sessions are torn down.
A final Admin Down control packet is sent to all neighbors and sessions on the remote system change to the Down state.
To disable all VRRP sessions on an interface, sessions for a particular VRRP group, or for a particular VRRP session on an
interface, use the following commands.
● Disable all VRRP sessions on an interface.
INTERFACE mode
no vrrp bfd all-neighbors
● Disable all VRRP sessions in a VRRP group.
VRRP mode
bfd disable
● Disable a particular VRRP session on an interface.
INTERFACE mode
no vrrp bfd neighbor ip-address
168
Bidirectional Forwarding Detection (BFD)