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doc: Add documentation for AIGP

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bgp bestpath aigp
neighbor PEER aigp

route-map X permit 10
 set aigp-metric <igp-metric|VALUE>

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
This commit is contained in:
Donatas Abraitis 2022-10-12 21:04:35 +03:00
parent 0c969118c7
commit 91e9aee087
2 changed files with 22 additions and 0 deletions
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17
doc/user/bgp.rst
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@ -148,6 +148,12 @@ bottom until one of the factors can be used.
Prefer higher local preference routes to lower. Prefer higher local preference routes to lower.
If ``bgp bestpath aigp`` is enabled, and both paths that are compared have
AIGP attribute, BGP uses AIGP tie-breaking unless both of the paths have the
AIGP metric attribute. This means that the AIGP attribute is not evaluated
during the best path selection process between two paths when one path does
not have the AIGP attribute.
3. **Local route check** 3. **Local route check**
Prefer local routes (statics, aggregates, redistributed) to received routes. Prefer local routes (statics, aggregates, redistributed) to received routes.
@ -401,6 +407,17 @@ Route Selection
paths learned from any of eBGP, iBGP, or confederation neighbors will paths learned from any of eBGP, iBGP, or confederation neighbors will
be multipath if they are otherwise considered equal cost. be multipath if they are otherwise considered equal cost.
.. clicmd:: bgp bestpath aigp
Use the bgp bestpath aigp command to evaluate the AIGP attribute during
the best path selection process between two paths that have the AIGP
attribute.
When bgp bestpath aigp is disabled, BGP does not use AIGP tie-breaking
rules unless paths have the AIGP attribute.
Disabled by default.
.. clicmd:: maximum-paths (1-128) .. clicmd:: maximum-paths (1-128)
Sets the maximum-paths value used for ecmp calculations for this Sets the maximum-paths value used for ecmp calculations for this

5
doc/user/routemap.rst
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@ -310,6 +310,11 @@ Route Map Set Command
trip time or `+rtt`/`-rtt` to add/subtract the round trip time to/from the trip time or `+rtt`/`-rtt` to add/subtract the round trip time to/from the
MED. MED.
.. clicmd:: set aigp-metric <igp-metric|(1-4294967295)>
Set the BGP attribute AIGP to a specific value. If ``igp-metric`` is specified,
then the value is taken from the IGP protocol, otherwise an arbitrary value.
.. clicmd:: set as-path prepend AS_PATH .. clicmd:: set as-path prepend AS_PATH
Set the BGP AS path to prepend. Set the BGP AS path to prepend.