Defaults
Disabled.
Command
Modes
ROUTER BGP
Command
History
Version
Description
9.2(1.0)
Introduced on the Z9500.
8.2.1.0
Introduced on the E-Series ExaScale.
7.4.1.0
Introduced
Usage
Information
To prevent loops, the
neighbor ebgp-multihop
command does not install
default routes of the multihop peer. Networks not directly connected are not
considered valid for best path selection.
neighbor fall-over
Enable or disable fast fall-over for BGP neighbors.
Z9500
Syntax
neighbor {
ipv6-address
|
peer-group-name
} fall-over
To disable, use the
no neighbor {
ipv6-address
|
peer-group-name
}
fall-over
command.
Parameters
ipv6-address
Enter the IPv6 address in the x:x:x:x::x format.
NOTE: The :: notation specifies successive hexadecimal
fields of zeros.
peer-group-
name
Enter the name of the peer group.
Defaults
Disabled.
Command
Modes
ROUTER BGP
Command
History
Version
Description
9.2(1.0)
Introduced on the Z9500.
8.2.1.0
Introduced on the E-Series ExaScale.
7.4.1.0
Introduced
Usage
Information
When you enable fall-over, BGP keeps track of IP or IPv6 reachability to the peer
remote address and the peer local address. Whenever either address becomes
unreachable (for example, no active route exists in the routing table for peer IP or
IPv6 destination/local address), BGP brings down the session with the peer.
542
Border Gateway Protocol
