Set intervals

This command helps to assign the minimum transmit interval and minimum receive interval in the range 1 to 20 seconds. Detect multiplier value is assigned as a number between 1 and 5. By default, the minimum transmit and receive interval is 3 seconds and multiplier value is 5.

Syntax


bfd authentication | min-echo-receive-interval | min-transmit-interval

Description

Configure Bidirectional Forwarding Detection (BFD) for the VLAN.

Options

min-transmit-interval: Update the minimum transmit interval of the BFD session.
min-echo-receive-interval: Update the minimum echo receive interval of the BFD session.
authentication: Configure authentication mode and key for all BFD sessions under the current VLAN.

Syntax


bfd min-transmit-interval TXSECONDS min-receive-interval RXSECONDS detect-multiplierMULTIPLIER

Description

Update BFD timer intervals for all the sessions under the current VLAN.

Options

min-transmit-interval

Update the minimum transmit interval of the BFD session.

min-receive-interval

Update the minimum receive interval of the BFD session.

detect-multiplier

Update the detect multiplier count of the BFD session.

txseconds

The time interval, in the range 1 to 20 seconds, between the transmission of two BFD hello packets.

rxseconds

The time interval, in the range 0 to 20 seconds, between the reception of two BFD hello packets.

0 indicates the local end is not interested in receiving hello packets from the peer.

multiplier

Number of BFD packets, in the range 1 to 5, that are allowed to be missed before BFD session times out.

NOTE:

If min-transmit-interval or min-receive-interval value is configured as 1 sec, the value of detect multiplier should be at least 3.
If detect multiplier value is 1, the value of min-transmit-interval and min-receive-interval should be at least 3 sec.

Set intervals configuration

; J9850A Configuration Editor; Created on release #KB.16.02.0000x
; Ver #0b:fc.59.f4.7b.ff.ff.fc.ff.ff.3f.ef:0d
hostname "switch"
module A type j9989a
module C type j9550a
module F type j9987a
snmp-server community "public" unrestricted
oobm
     ip address dhcp-bootp
     exit
vlan 1
    name "DEFAULT_VLAN"
    untagged A2-A24,C1-C24,F1-F24
    ip address dhcp-bootp
    exit
ip routing
router ospf
    area 0.0.0.2
    area 0.0.0.3
    area backbone
    enable
    exit
bfd enable
bfd echo-src-ip-address 2.2.2.2
vlan 20
  untagged A1
    bfd min-transmit-interval 10 min-receive-interval 10 detect-multiplier 3
    ip address 100.100.100.100 255.255.255.0
    ip ospf 100.100.100.100 area backbone
    ip ospf 100.100.100.100 bfd
    exit

Show BFD session

Switch# show bfd-session 1

BFD Session Information – Session 1

   Min Tx Interval (sec)       : 10                 
   Min Rx Interval (sec)       : 10
   Min Echo Rx Interval (msec) : 500               
   Detect Multiplier           : 3                 
   Authentication Mode         : NONE                     
   Password                    : ""                    
   Application                 : OSPF       
   Local Discriminator         : 1          
   Remote Discriminator        : 1          
   Echo                        : Enabled  
   Local Diagnostic            : No diagnostics configured.        

   VLAN Source IP    Destination IP  State Pkt In Pkt Drop Pkt Out 
   ---- ------------ ---------------  ------ ------ ------- ------
   20   100.100.100.100 100.100.100.101 Up  322      0      320