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| -rw-r--r-- | doc/bird.sgml | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml index 384af835..e0f4fb76 100644 --- a/doc/bird.sgml +++ b/doc/bird.sgml @@ -2395,6 +2395,16 @@ using the following configuration parameters: completely disabled and you should ensure loop-free behavior by some other means. Default: 0 (no local AS number allowed). + <tag><label id="bgp-allow-as-sets">allow as sets [<m/switch/]</tag> + AS path attribute received with BGP routes may contain not only + sequences of AS numbers, but also sets of AS numbers. These rarely used + artifacts are results of inter-AS route aggregation. AS sets are + deprecated (<rfc id="6472">), and likely to be rejected in the future, + as they complicate security features like RPKI validation. When this + option is disabled, then received AS paths with AS sets are rejected as + malformed and corresponding BGP updates are treated as withdraws. + Default: off. + <tag><label id="bgp-enable-route-refresh">enable route refresh <m/switch/</tag> After the initial route exchange, BGP protocol uses incremental updates to keep BGP speakers synchronized. Sometimes (e.g., if BGP speaker |