Administrator Guide

mask (OPTIONAL) Enter the network mask (in slash prefix (/x) format) of the BGP network
address.
filter-list as-path-
name
(OPTIONAL) Enter the keyword filter-list then the name of a configured AS-PATH
ACL. The range is 140 characters.
regexp regular-
expression
Enter a regular expression then use one or a combination of the following characters to
match. The range is 256 characters.
• . = (period) any single character (including a white space).
• * = (asterisk) the sequences in a pattern (zero or more sequences).
• + = (plus) the sequences in a pattern (one or more sequences).
• ? = (question mark) sequences in a pattern (either zero or one sequences).
NOTE: 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 you use the caret at the beginning of a
sequence or range, it matches on everything BUT the characters specified.
• $ = (dollar sign) the end of the output string.
Command Modes
• EXEC
• EXEC Privilege
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.8(0.0) Introduced on the S3048–ON and S4048–ON.
9.7(0.0) Added the ipv4 multicast and ipv6 unicast parameters.
9.4.(0.0) Added support for VRF.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series.
Usage Information
The following describes the show ip bgp flap command shown in the following example.
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.
Border Gateway Protocol 393