Service Manual

Version Description
9.0.0.0 Introduced on the Z9000.
8.3.19.0 Introduced on the S4820T.
8.3.8.0 Introduced on the S4810.
8.4.1.3 Introduced on the E-Series.
Usage Information
When you explicitly disable a BGP neighbor for a BFD session with the neighbor bfd
disable command:
• The neighbor does not inherit the global BFD disable values configured with the
bfd neighbor command or configured for the peer group to which the
neighbor belongs.
• The neighbor only inherits the global timer values configured with the bfd
neighbor command: interval, min_rx, and multiplier.
When you remove the Disabled state of a BFD for a BGP session with a specified
neighbor by entering the no neighbor bfd disable command, the BGP link with
the neighbor returns to normal operation and uses the BFD session parameters globally
configured with the
bfd neighbor command or configured for the peer group to
which the neighbor belongs.
Related
Commands
• neighbor bfd — enable a BFD session explicitly with a BGP neighbor or a BGP peer
group.
show bfd neighbors
Display BFD neighbor information on all interfaces or a specified interface.
Syntax
show bfd neighbors interface [detail]
Parameters
interface 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.
Bidirectional Forwarding Detection (BFD) 428