Reference Guide

378 | Border Gateway Protocol IPv4 (BGPv4)
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Command Modes
EXEC
EXEC Privilege
Example
FTOS>show ip bgp flap
BGP table version is 210851, local router ID is 63.114.8.2
Status codes: s suppressed, d damped, h history, * valid, > best
Path source: I - internal, a - aggregate, c - confed-external, r - redistributed, n - network
Origin codes: i - IGP, e - EGP, ? - incomplete
Network From Flaps Duration Reuse Path
FTOS>
Table 9-7 defines the information displayed in the previous example.
Command
History
filter-list as-path-name (OPTIONAL) Enter the keyword filter-list followed by the name of
a configured AS-PATH ACL.
regexp regular-expression Enter a regular expression then use one or a combination of the
following characters to match:
•
. = (period) any single character (including a white space)
•
* = (asterisk) the sequences in a pattern (0 or more sequences)
•
+ = (plus) the sequences in a pattern (1 or more sequences)
•
? = (question mark) sequences in a pattern (either 0 or 1
sequences). You must enter an escape sequence (CTRL+v)
prior to entering the ? regular expression.
•
[ ] = (brackets) a range of single-character patterns.
•
( ) = (parenthesis) groups a series of pattern elements to a single
element
•
{ } = (braces) minimum and the maximum match count
•
^ = (caret) the beginning of the input string. If the caret is used
at the beginning of a sequence or range, it matches on everything
BUT the characters specified.
•
$ = (dollar sign) the end of the output string.
Table 9-7. show ip bgp flap-statistics Command Example Fields
Field Description
Network Displays the network ID to which the route is flapping.
From Displays the IP address of the neighbor advertising the flapping
route.
Flaps Displays the number of times the route flapped.
Duration Displays the hours:minutes:seconds since the route first flapped.
Reuse Displays the hours:minutes:seconds until the flapped route is
available.
Path Lists all the ASs the flapping route passed through to reach the
destination network.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.7.0 Introduced on the S4810.