Juniper JUNOSE 11.1.X - COMMAND REFERENCE N TO Z 4-6-2010, Command Reference Manual

Page: 73 / 1488

neighbor bfd-liveness-detection
Syntax
neighbor { ipAddress | ipv6Address | peerGroupName } bfd-liveness-detection
[ minimum-interval minInterval |
[ minimum-receive-interval minRecInterval ]
[ minimum-transmit-interval minTransInterval ] ] [ multiplier multiplierValue ]
{ no | default } neighbor { ipAddress | ipv6Address | peerGroupName }
bfd-liveness-detection
Release Information
Command introduced in JUNOSe Release 7.2.0.
ipv6Address variable added in JUNOSe Release 8.0.0.
Description
Enables BGP to determine quickly whether a BGP neighbor is unreachable by means
of a BFD protocol session to the neighbor address or to each member of the specified
peer group. The
no version disables BFD liveness detection for the neighbor or
peer-group members. The default version removes the explicit configuration from
the peer or peer group and reestablishes inheritance of the feature configuration.
NOTE: BFD sessions might not be maintained when the multiplier value is 1 and
configured intervals are very short. We recommend that you do not use a multiplier
value of 1 with very short intervals.
Options
■
ipAddress —IP address of BGP neighbor
■
ipv6Address —IPv6 address of BGP neighbor
■
peerGroupName —Name of a BGP peer group. If you specify a BGP peer group
by using the peerGroupName argument, all the members of the peer group inherit
the characteristic configured with this command, unless it is overridden for a
specific peer.
■
minInterval —Minimum proposed transmit interval and required receive interval
for BFD control packets; has the same effect as configuring the minimum receive
interval and the minimum transmit interval to the same value; number in the
range 100–65535 milliseconds—for ES2 4G LM only, the range is 10–65535
milliseconds; default value is 300 milliseconds
■
minRecInterval —Minimum interval at which the local peer must receive BFD
control packets sent by the remote peer; number in the range 100–65535
milliseconds—for ES2 4G LM only, the range is 10–65535 milliseconds; default
value is 300 milliseconds
■
minTransInterval —Minimum interval at which the local peer proposes to transmit
BFD control packets to the remote peer; number in the range 100–65535
milliseconds—for ES2 4G LM only, the range is 10–65535 milliseconds; default
value is 300 milliseconds
■
multiplierValue —Detection multiplier value that the remote peer router multiplies
by the local peer’s negotiated transmit interval to determine the remote peer’s
neighbor bfd-liveness-detection
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Chapter 2: N Commands