bfd disable

The command is available in the context configuration mode (config-if). As a result of the command execution all the bfd-sessions on the interface are disabled (are set to Admin-Down state). The default value is enabled.

bfd echo

The command is available in the configuration mode (config). As a result of the command execution the echo-function will be enabled with the default parameters for all the bfd-sessions. The default value is disabled.

bfd echo interval <1-4294967>

The command is available in the context configuration mode (config-if). As a result of the command execution the interval for sending echo messages in milliseconds will be set for all bfd sessions on the interface. The default value is 1000.

bfd interval <25-999> minrx <25-999> multiplier <3-50>

The command is available in the context configuration mode (config-if). As a result of the command execution for all the bfd-sessions the following parameters will be specified: the interval for sending bfd-control messages in milliseconds, the expected interval for receiving bfd-control messages in milliseconds, the number of lost messages after which the session is considered to be broken. The default values are 250/250/3.

bfd all-interfaces

The command is available in the context configuration mode (config-router). As a result of the command execution the bfd-sessions will be established with all OSPF neighbors in appropriate OSPF process

ecorouter#show bfd

BFD ID: 00      Start Time:Tue Nov 21 08:45:34 2017

BFD Admin State: UP

Number of Sessions:    1

Slow Timer: 2000        Image type: MONOLITHIC

Echo Mode: Disabled     BFD Notifications disabled

Next Session Discriminator:    2

Display global BFD parameters.

Start Time - the oamd process start time;

BFD Admin State - the protocol administrative state on the device;

Number of Sessions - number of active sessions;

Slow Timer - slow timer value;

Image type - hello packets processing type (MONOLITHIC - by one process, DISTRIBUTED - by several processes);

Echo Mode - echo-function state (enabled/disabled);

BFD Notifications - notification state (enabled/disabled);

Next Session Discriminator - next session's which will be established identifier

ecorouter#show bfd interface

Interface: loopback.0  ifindex: 8 state:   UP

Interface level configuration: NO ECHO, NO SLOW TMR

Timers in Milliseconds

Min Tx: 250  Min Rx: 250  Multiplier: 3

Interface:        te0  ifindex: 9 state:   UP

Interface level configuration: NO ECHO, NO SLOW TMR

Timers in Milliseconds

Min Tx: 250  Min Rx: 250  Multiplier: 3

Display information of BFD parameters for all interfaces where BFD is enabled.

Interface - interface name;

ifindex - system serial number of interface;

state - interface state;

Interface level configuration - interface BFD parameters;

Min Tx - interval for sending bfd-control messages;

Min Rx - expected interval for receiving bfd-control messages;

Multiplier - number of lost messages after which the session is considered to be broken

ecorouter#show bfd session

Sess-Idx   Remote-Disc  Lower-Layer  Sess-Type   Sess-State  UP-Time   Remote-Addr

1          1            IPv4         Single-Hop  Up          01:12:50  10.1.1.1/32

4          1            IPv4         Single-Hop  Up          00:00:01  20.1.1.1/32

Number of Sessions:    2

Display information of all active bfd-sessions.

Sess-Idx - session local id;

Remote-Disc - session id on remote device;

Lower-Layer - incapsulating protocol;

Sess-Type - session type (single/multi);

Sess-State - session state;

UP-Time - session up-time;

Remote-Addr - interface address of remote router which session established on;

Number of Sessions - number of active sessions

ecorouter#show bfd session detail

======================================================

Session Interface Index : 9              Session Index : 1

Lower Layer : IPv4                       Version : 1

Session Type : Single Hop                Session State : Up

Local Discriminator : 1                  Local Address : 10.1.1.2/32

Remote Discriminator : 1                 Remote Address : 10.1.1.1/32

Local Port : 49152                       Remote Port : 3784

Options :

Diagnostics : None

Timers in Milliseconds :

Min Tx: 250               Min Rx: 250               Multiplier: 3

Neg Tx: 250               Neg Rx: 2000              Neg detect mult: 3

Min echo Tx: 1000         Min echo Rx: 1000         Neg echo intrvl: 0

Storage type : 2

Sess down time : 00:00:00

Sess discontinue time : 00:00:00

Bfd GTSM Disabled

Bfd Authentication Disabled

Counters values:

Pkt In : 0000000000007f5f                Pkt Out : 0000000000007f5a

Echo Out : 0000000000000000              UP Count : 1                       UPTIME : 01:58:53

Protocol Client Info:

OSPF-> Client ID: 4      Flags: 4

----------------------------------------------------------

Number of Sessions:    1

Display detailed information of all active bfd-sessions.

Session Interface Index - system serial number of local interface;

Lower Layer - incapsulating protocol;

Session Type - session type (single/multi);

Local Discriminator - local session id;

Remote Discriminator - session id on remote device;

Local Port - local UDP port;

Session Index - session local id;

Session State - session state;

Local Address - interface address of local router which session established on;

Remote Address - interface address of remote router which session established on;

Remote Port - remote UDP port;

Min Tx/Neg Tx - local/remote interval for sending bfd-control messages;

Min Rx/Neg Rx - local/remote expected interval for receiving bfd-control messages;

Multiplier/Neg detect multi - number of lost messages after which the session is considered to be broken. Values for local/remote routers;

Min echo Tx/Min echo Rx - local/remote interval for sending echo messages;

Sess down time - session break time;

Sess discontinue time - period during which the session was down;

Bfd GTSM - GTSM function state;

Bfd Authentication - authentication function state;

Pkt In - number of incoming BFD packets;

Pkt Out - number of outgoing BFD packets;

Echo Out - number of outgoing echo packets;

UPTIME - session up-time;

Protocol Client Info - protocol used for session establishment;

Number of Sessions - number of active sessions

ecorouter#show bfd session 10.1.1.2 10.1.1.1

Session Interface Index : 9              Session Index : 1

Lower Layer : IPv4                       Session Type : Single Hop                

Session State : Up

Local Discriminator : 1                  Remote Discriminator : 1

Local Address : 10.1.1.2/32              Remote Address : 10.1.1.1/32

Local Port : 49152                       Remote Port : 3784

Timers in Milliseconds :

Min Tx: 250           Min Rx: 250        Multiplier: 3

UP Count : 1                             UPTIME : 03:10:33

Display information of session between individual local interface with a specific id and remote interfae with a specific id.

Session Interface Index - system serial number of local interface;

Lower Layer - incapsulating protocol;

Session State - session state;

Session Index - session local id;

Session Type - session type (single/multi);

Local Discriminator - session local id;

Local Address -  interface address of local router which session established on;

Local Port - local UDP port;

Remote Discriminator - session id on remote device;

Remote Address -  interface address of remote router which session established on;

Remote Port - remote UDP port;

Min Tx - local interval for sending bfd-control messages;

Min Rx - local expected interval for receiving bfd-control messages;

Multiplier - number of lost messages after which the session is considered to be broken;

UPTIME - session up-time