display bgp routing-table flap-info

Function

The display bgp routing-table flap-info command displays statistics about BGP route flapping.

Format

display bgp [ vpnv4 vpn-instance vpn-instance-name ] routing-table flap-info [ regular-expression as-regular-expression ]

display bgp [ vpnv4 vpn-instance vpn-instance-name ] routing-table flap-info { as-path-filter { as-path-filter-number | as-path-filter-name } | network-address [ { mask | mask-length } [ longer-match ] ] }

display bgp ipv6 routing-table flap-info [ regular-expression as-regular-expression ]

display bgp ipv6 routing-table flap-info { as-path-filter { as-path-filter-number | as-path-filter-name } | network-address [ prefix-length [ longer-match ] ] }

display bgp vpnv6 vpn-instance vpn-instance-name routing-table flap-info [ regular-expression as-regular-expression ] (supported only by the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730S-H, and S6730-H)

display bgp vpnv6 vpn-instance vpn-instance-name routing-table flap-info { as-path-filter { as-path-filter-number | as-path-filter-name } | network-address [ prefix-length [ longer-match ] ] } (supported only by the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730S-H, and S6730-H)

display bgp vpnv4 { all | route-distinguisher route-distinguisher } routing-table flap-info [ as-path-filter { as-path-filter-number | as-path-filter-name } | ipv4-address [ { mask | mask-length } [ longer-match ] ] ] (supported only by the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730S-H, and S6730-H)

display bgp vpnv4 { all | route-distinguisher route-distinguisher } routing-table flap-info [ regular-expression as-regular-expression ] (supported only by the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730S-H, and S6730-H)

Parameters

Parameter	Description	Value
vpnv4	Displays statistics about route flapping of a VPNv4 instance.	-
vpn-instance vpn-instance-name	Specifies the name of a VPN instance.	The value must be an existing VPN instance name.
regular-expression as-regular-expression	Displays statistics about the flapping routes that match the AS_Path regular expression.	The value is a string of 1 to 80 characters.
as-path-filter as-path-filter-number	Specifies the number of an AS_Path filter.	It is an integer that ranges from 1 to 256.
as-path-filter as-path-filter-name	Specifies the name of an AS_Path filter.	The name is a string of 1 to 51 case-sensitive characters without spaces. When double quotation marks are used around the string, spaces are allowed in the string.
network-address	Specifies the network address related to dampened routes.	-
mask	Specifies the network mask.	It is in dotted decimal notation.
mask-length	Specifies the mask length.	The value is an integer that ranges from 0 to 32.
longer-match	Matches a route with a longer prefix.	-
prefix-length	Specifies the prefix length.	The value is an integer that ranges from 0 to 128.
vpnv6	Displays statistics about route flapping of a VPNv6 instance.	-
ipv4-address	Displays statistics about the flapping routes that match the IPv4 prefix.	-
route-distinguisher route-distinguisher	Displays the Route Distinguisher dampened BGP routes.	The RD formats are divided into the following types: 2-byte AS number:4-byte user-defined number, for example, 101:3. An AS number ranges from 0 to 65535. A user-defined number ranges from 0 to 4294967295. The AS number and the user-defined number cannot be 0s at the same time. That is, an RD cannot be 0:0. Integral 4-byte AS number:2-byte user-defined number, for example, 65537:3. An AS number ranges from 65536 to 4294967295. A user-defined number ranges from 0 to 65535. The AS number and user-defined number cannot be both 0s. That is, an RD cannot be 0:0. 4-byte AS number in dotted notation:2-byte user-defined number, for example, 0.0:3 or 0.1:0. A 4-byte AS number in dotted notation is in the format of x.y, where x and y are integers that range from 0 to 65535 and from 0 to 65535, respectively. A user-defined number ranges from 0 to 65535. The AS number and user-defined number cannot be both 0s. That is, an RD cannot be 0.0:0. IPv4-address:2-byte user-defined number, for example, 192.168.122.15:1. An IP address ranges from 0.0.0.0 to 255.255.255.255. A user-defined number ranges from 0 to 65535.

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

You can run the display bgp routing-table flap-info command to check statistics about BGP route flapping.

Example

# Display statistics about BGP route flapping.

<HUAWEI> display bgp routing-table flap-info

 
 BGP Local router ID is 10.20.200.201
 Status codes: * - valid, > - best, d - damped,
               h - history,  i - internal, s - suppressed,
               Origin codes: i - IGP, e - EGP, ? - incomplete

Total Number of Routes: 7
     Network         From            Flaps  Duration     Reuse  Path/Ogn

 d  10.1.1.0        10.20.200.200   5      00:00:36  00:40:47  600i
 *>  10.1.1.0        10.20.200.202   1      00:04:07            100?
 d  10.1.2.0        10.20.200.200   5      00:00:36  00:40:47  600i
 *>  10.1.2.0        10.20.200.202   1      00:04:07            100?
 d  10.1.3.0        10.20.200.200   5      00:00:36  00:40:47  600i
 d  10.1.4.0        10.20.200.200   5      00:00:36  00:40:47  600i
 d  10.1.5.0        10.20.200.200   5      00:00:36  00:40:47  600i

**Table 1** Description of the display bgp routing-table flap command output
Item	Description
Network	Network address in the BGP routing table.
From	IP address of the peer that receives the routes.
Flaps	Total number of times of route flapping.
Duration	Total time length of flapping.
Reuse	Reuse value.
Path/Ogn	AS_Path number and Origin attribute.

# Display statistics about BGP4+ route flapping.

<HUAWEI> display bgp ipv6 routing-table flap-info

 
 BGP Local router ID is 10.53.53.53
 Status codes: * - valid, > - best, d - damped,
               h - history,  i - internal, s - suppressed, S - Stale
               Origin : i - IGP, e - EGP, ? - incomplete

 Total Number of Routes: 3
  d  Network : FC00:0:0:1::                              PrefixLen : 96
     From    : FC00:0:0:1::1                             Flaps     : 8
     Duration: 00:02:11                                  Reuse     : 00:49:21
     Path/Ogn: 100?

  d  Network : FC00:0:0:2::2                             PrefixLen : 128
     From    : FC00:0:0:1::1                             Flaps     : 5
     Duration: 00:00:18                                  Reuse     : 00:41:06
     Path/Ogn: 100?

  d  Network : FC00:0:0:2::3                             PrefixLen : 128
     From    : FC00:0:0:1::1                             Flaps     : 5
     Duration: 00:00:18                                  Reuse     : 00:41:06
     Path/Ogn: 100?