Fwd: BGP session closed after receipt of flowspec route without destination prefix
Alex D.
listensammler at gmx.de
Wed Feb 5 20:44:54 CET 2020
Hi,
does anybody know something about the behavior observed ?
Regards,
Alex
-------- Original-Nachricht --------
Betreff: BGP session closed after receipt of flowspec route without
destination prefix
Datum: Fri, 24 Jan 2020 21:33:17 +0100
Von: Alex D. <listensammler at gmx.de>
An: bird-users at network.cz
Hi,
i configured the following flowspec route on a Juniper router:
route v6test {
match {
source 2a02:xxxx:xxxx:xxxx::1/128;
}
then discard;
}
The route was accepted on my Juniper router and blocked all traffic from
src ip 2a02:xxxx:xxxx:xxxx::1 as expected. After advertising the route,
BIRD closed the BGP session. Is this an expected behaviour, means does
is it necessary, that a dst prefix for a flowspec route must exist ?
Log:
2020-01-24 09:52:26.750 <RMT> vs_dis_r1_6838: No dst prefix at first pos
2020-01-24 09:52:26.750 <RMT> vs_dis_r1_6838: Error: Malformed attribute
list
2020-01-24 09:52:26.750 <TRACE> vs_dis_r1_6838: BGP session closed
BIRD accepted the route after changing to:
route v6test {
match {
destination ::/0;
source 2a02:xxxx:xxxx:xxxx::1/128;
}
then discard;
}
Regards,
Alex
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