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bgpd: Increase maximum supress threshold for dampening to 50,000

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rfc7196 recommends:

In addition, BGP implementations have an internal constant, which we
   will call the 'maximum penalty', and the current computed penalty may
   not exceed it.

Router Maximum Penalty:  The internal constant for the maximum
      penalty value MUST be raised to at least 50,000.

Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>
This commit is contained in:
Donatas Abraitis 2022-01-05 11:30:38 +02:00
parent d76a3c5165
commit a30fec23f8
3 changed files with 5 additions and 3 deletions
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4
bgpd/bgp_route.c
View File

@ -14607,7 +14607,7 @@ DEFUN (no_ipv6_bgp_distance_source_access_list,
DEFUN (bgp_damp_set, DEFUN (bgp_damp_set,
bgp_damp_set_cmd, bgp_damp_set_cmd,
"bgp dampening [(1-45) [(1-20000) (1-20000) (1-255)]]", "bgp dampening [(1-45) [(1-20000) (1-50000) (1-255)]]",
"BGP Specific commands\n" "BGP Specific commands\n"
"Enable route-flap dampening\n" "Enable route-flap dampening\n"
"Half-life time for the penalty\n" "Half-life time for the penalty\n"
@ -14653,7 +14653,7 @@ DEFUN (bgp_damp_set,
DEFUN (bgp_damp_unset, DEFUN (bgp_damp_unset,
bgp_damp_unset_cmd, bgp_damp_unset_cmd,
"no bgp dampening [(1-45) [(1-20000) (1-20000) (1-255)]]", "no bgp dampening [(1-45) [(1-20000) (1-50000) (1-255)]]",
NO_STR NO_STR
"BGP Specific commands\n" "BGP Specific commands\n"
"Enable route-flap dampening\n" "Enable route-flap dampening\n"

2
doc/user/bgp.rst
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@ -515,7 +515,7 @@ Disable checking if nexthop is connected on EBGP sessions
Route Flap Dampening Route Flap Dampening
-------------------- --------------------
.. clicmd:: bgp dampening (1-45) (1-20000) (1-20000) (1-255) .. clicmd:: bgp dampening (1-45) (1-20000) (1-50000) (1-255)
This command enables BGP route-flap dampening and specifies dampening parameters. This command enables BGP route-flap dampening and specifies dampening parameters.

2
doc/user/overview.rst
View File

@ -349,6 +349,8 @@ BGP
:t:`The Resource Public Key Infrastructure (RPKI) to Router Protocol. R. Bush, R. Austein. January 2013.` :t:`The Resource Public Key Infrastructure (RPKI) to Router Protocol. R. Bush, R. Austein. January 2013.`
- :rfc:`6811` - :rfc:`6811`
:t:`BGP Prefix Origin Validation. P. Mohapatra, J. Scudder, D. Ward, R. Bush, R. Austein. January 2013.` :t:`BGP Prefix Origin Validation. P. Mohapatra, J. Scudder, D. Ward, R. Bush, R. Austein. January 2013.`
- :rfc:`7196`
:t:`Making Route Flap Damping Usable. C. Pelsser, R. Bush, K. Patel, P. Mohapatra, O. Maennel. May 2014.`
- :rfc:`7313` - :rfc:`7313`
:t:`Enhanced Route Refresh Capability for BGP-4. K. Patel, E. Chen, B. Venkatachalapathy. July 2014.` :t:`Enhanced Route Refresh Capability for BGP-4. K. Patel, E. Chen, B. Venkatachalapathy. July 2014.`
- :rfc:`7606` - :rfc:`7606`