Dell Command Line Reference Guide for the S4048–ON System 9.14.2.5

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show bfd neighbors

Display BFD neighbor information on all interfaces or a specified interface.

Syntax
show bfd [vrf vrf name] neighbors [interface] [detail]
Parameters
vrf vrf name
(Optional) Enter the keyword vrf and then the name of the VRF to display the BFD sessions with all neighbors within the VRF.
interface
(OPTIONAL) Enter one of the following keywords and slot/port or number information:
  • For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port[/subport] information.
  • For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/port information.
  • For a port channel interface, enter the keywords port-channel then a number.
  • For a VLAN interface, enter the keyword vlan then a number from 1 to 4094.
detail
(OPTIONAL) Enter the keyword detail to view detailed information about BFD neighbors.
Defaults
None
Command Modes
  • EXEC
  • EXEC Privilege
Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide.

Version
Description
9.11(2.1P1)
Introduced the vrf keyword on all the remaining Dell EMC Networking OS platforms.
9.10(0.2)
Introduced the vrf keyword on the S3048–ON, S4048–ON, S4048T-ON, S6010–ON, Z9100–ON, and S6100–ON.
9.10(0.1)
Introduced on the S6010-ON and S4048T-ON.
9.10(0.0)
Introduced on the S3148.
9.8(2.0)
Introduced on the S3100 series.
9.8(0.0P5)
Introduced on the S4048-ON.
9.8(0.0P2)
Introduced on the S3048-ON.
9.2(1.0)
Introduced on the Z9500.
9.0.0.0
Introduced on the Z9000.
8.3.19.0
Introduced on the S4820T.
8.3.8.0
Added support for BFD for BGP on the S4810.
8.4.1.3
Added support for BFD for BGP on the E-Series.
8.2.1.0
Introduced on the E-Series.
7.6.1.0
Introduced on the C-Series.
7.5.1.0
Added support for BFD for VLAN and port-channel interfaces on the E-Series.
7.4.1.0
Introduced BFD on physical ports on the E-Series.
Example

The following example shows the show bfd neighbors command output for the default VRF.

show bfd neighbors

*       - Active session role
Ad Dn   - Admin Down
B       - BGP
C       - CLI
I       - ISIS
O       - OSPF
O3      - OSPFv3
R       - Static Route (RTM)
M       - MPLS
V       - VRRP
VT      - Vxlan Tunnel

LocalAddr    RemoteAddr  Interface  State Rx-int Tx-int Mult   Clients
* 5.1.1.1    5.1.1.2     Po 30      Up    200    200    3        O
* 6.1.1.1    6.1.1.2     Vl 30      Up    200    200    3        O
* 7.1.1.1    7.1.1.2     Te 1/21    Up    200    200    3        O

The following example shows the show bfd vrf neighbors command output showing the nondefault VRF.

DellEMC(conf)#do sho bfd vrf vrf2 neighbors

*       - Active session role
Ad Dn   - Admin Down
B       - BGP
C       - CLI
I       - ISIS
O       - OSPF
O3      - OSPFv3
R       - Static Route (RTM)
M       - MPLS
V       - VRRP
VT      - Vxlan Tunnel


  LocalAddr       RemoteAddr Interface       State Rx-int Tx-int Mult VRF Clients
* 13.1.1.1        13.1.1.2        Te 1/2     Up    200    200    3    2      R

* 23.1.1.1        23.1.1.2        Vl 300     Up    200    200    3    2      R

* 33.1.1.1        33.1.1.2        Vl 301     Up    200    200    3    2      R
Example (Detail)

The following example shows the show bfd vrf neighbors detail command output showing the nondefault VRF called “VRF_blue”.

show bfd vrf VRF_blue neighbors detail

Session Discriminator: 5
Neighbor Discriminator: 3
Local Addr: 5.1.1.1
Local MAC Addr: 00:a0:c9:00:00:02
Remote Addr: 5.1.1.2
Remote MAC Addr: 34:17:98:34:00:12
Int: Port-channel 30
State: Up
Configured parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Neighbor parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Actual parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Role: Active
Delete session on Down: True
VRF: VRF_blue
Client Registered: OSPF
Uptime: 00:00:15
Statistics:
Number of packets received from neighbor: 78
Number of packets sent to neighbor: 78
Number of state changes: 1
Number of messages from IFA about port state change: 0
Number of messages communicated b/w Manager and Agent: 4    

Session Discriminator: 7
Neighbor Discriminator: 2
Local Addr: 6.1.1.1
Local MAC Addr: 00:a0:c9:00:00:02
Remote Addr: 6.1.1.2
Remote MAC Addr: 34:17:98:34:00:12
Int: Vlan 30
State: Up
Configured parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Neighbor parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Actual parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Role: Active
Delete session on Down: True
VRF: VRF_blue
Client Registered: OSPF
Uptime: 00:00:15
Statistics:
Number of packets received from neighbor: 78
Number of packets sent to neighbor: 78
Number of state changes: 1
Number of messages from IFA about port state change: 0
Number of messages communicated b/w Manager and Agent: 4    

Session Discriminator: 6
Neighbor Discriminator: 1
Local Addr: 7.1.1.1
Local MAC Addr: 00:a0:c9:00:00:02
Remote Addr: 7.1.1.2
Remote MAC Addr: 34:17:98:34:00:12
Int: TenGigabitEthernet 1/21
State: Up
Configured parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Neighbor parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Actual parameters:
TX:  200ms, RX:  200ms, Multiplier: 3
Role: Active
Delete session on Down: True
VRF: VRF_blue
Client Registered: OSPF
Uptime: 00:00:14
Statistics:
Number of packets received from neighbor: 73
Number of packets sent to neighbor: 73
Number of state changes: 1
Number of messages from IFA about port state change: 0
Number of messages communicated b/w Manager and Agent: 4    
Related Commands
  • bfd all-neighbors — establish BFD sessions with all neighbors discovered by the IS-IS protocol or OSPF protocol out of all interfaces.

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