Re: OpenBGPd: fatal in RDE: aspath_get: Cannot allocate memory

Le 01/04/2022 à 14:38, Claudio Jeker a écrit :
>
> The numbers look reasonable with maybe the exception of prefix and BGP
> path attrs. Unless this system is pushing or pulling lots of full feeds to
> peers I would not expect such a high number of prefixes. Also the number
> of path attributes is high but that could again be reasonable if many
> different full feeds are involved.

Hi Claudio,

This box is terminating 3 full IPv4 + 3 full IPv6 feeds + a few dozen IX
sessions in addition to 5 IPv4 + 5 IPv6 iBGP connections.

>> I'm not sure why the processes gets killed at around 3GB. Feels like you
>> hit the ulimit. See Stuart's mail about how to look into that.
>>
>> So looking at this output I feel like you somehow created a BGP update
>> loop where one or more systems are constantly sending UPDATEs to each
>> other because the moment the update is processed the route decision
>> changes and flaps back resulting in a withdraw or update.

I sincerely think it is not related to a BGP update loop because the
issue is only triggered when adding the following filters:

include "/etc/bgpd/deny-asn.ru.bgpd"
include "/etc/bgpd/deny-asn.by.bgpd"
include "/etc/bgpd/deny-asn.ua.bgpd"

for a total of 8265 rules

I'll try to dig further.


Thanks