display isis bfd session

Function

The display isis bfd session command displays information about a dynamic BFD session.

Format

display isis [ process-id | vpn-instance vpn-instance-name ] bfd session { all | peer ip-address | interface interface-type interface-number }

Parameters

Parameter	Description	Value
process-id	Specifies the IS-IS process number.	The value is an integer ranging from 1 to 65535.
vpn-instance vpn-instance-name	Specifies the VPN instance name.	The value is a string of 1 to 31 case-sensitive characters, spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.
all	Specifies all interfaces enabled with IS-IS in the IS-IS process.	-
peer ip-address	Specifies the IP address of the neighbor.	It is in the decimal notation format.
interface interface-type interface-number	Specifies the interface whose BFD session statistics need to be collected.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

None

Example

# Display the BFD information of the neighbor.

<sysname> display isis bfd session all

                      BFD session information for ISIS(1)

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

Peer System ID : 0000.0000.0002           Interface : GE0/0/0

TX : 1000          BFD State : up         Peer IP Address : 10.1.1.2

RX : 1000          LocDis : 8194          Local IP Address: 10.1.1.1

Multiplier : 3     RemDis : 8197          Type : L1

Diag : No diagnostic information

Total BFD session(s) : 1

**Table 1** Description of the **display isis bfd session all** command output
Item	Description
Peer System ID	System ID of the neighbor
Interface	Local interface name
TX	Negotiated minimum interval for sending BFD packets
BFD State	BFD status: Up Down
Peer IP Address	IP address of the neighbor
RX	Negotiated minimum interval for receiving BFD packets
LocDis	Local identifier dynamically assigned by BFD
Local IP Address	IP address of the local interface
Multiplier	Remote detection multiplier
RemDis	Remote identifier dynamically assigned by BFD
Type	Level of the neighbor L1: Level-1 L2: Level-2 L12: Level-1-2
Diag	Diagnostic information No diagnostic information: BFD runs properly, and no diagnostic information is displayed. Administrator down: The session is set Down by the network administrator. Global BFD is not enabled: Global BFD is disabled. BFD session number reaches the MAX: The number of BFD sessions reaches the upper limit. No BFD packets were received: The device does not receive any BFD packet. Neighbour is down: The neighbor goes Down. Administrator down event received: The device receives an event indicating that the BFD session is set Down by the network administrator.
Total BFD session	Total number of BFD sessions