GeorgeNmp
Member
AS64512
- Joined:
- May 2024
- Posts:
- 218
- From:
- Ashburn, US
Maybe the limit was for full-table sessions only?
Unlikely. RIB size is downstream of the session. The session itself costs the same whether you accept 0 prefixes or 900k. If they were memory-constrained they would limit RIB, not session age.
What AS is Contabo using for their sessions? I want to check their advertised capabilities — https://bgp.tools works for that.
iBGP, eBGP, don't care, just peer
Carl
Member
OP
Rack & Stack
- Joined:
- May 2024
- Posts:
- 227
- From:
- Chicago, US
AS51167 for the VPS BGP. I can check their capabilities when the session comes back up, currently in my 47-hour crontab window so it's down. Give me two hours.
visit twice: install and decom
GeorgeNmp
Member
AS64512
- Joined:
- May 2024
- Posts:
- 218
- From:
- Ashburn, US
Generic TCP session limit
That is worse. A 48-hour TCP cutoff breaks long-lived SSH tunnels, database replicas, anything stateful. BGP just happens to be the most visible because it logs explicitly.
Carl, when your session restarts, check if they support
BGP-GR
or
LLGR
. Graceful Restart might preserve forwarding during their forced teardown.
iBGP, eBGP, don't care, just peer
Carl
Member
OP
Rack & Stack
- Joined:
- May 2024
- Posts:
- 227
- From:
- Chicago, US
Session is up. They advertise
Multiprotocol Extensions, Route Refresh, Graceful Restart, Four-Octet AS Number
. GR capability is there. I'll test if it actually works through their 48-hour cycle. Need to configure it on my side and wait two days. Will report back.
visit twice: install and decom
ana_mad
Member
- Joined:
- Jun 2024
- Posts:
- 298
- From:
- Madrid, ES
I look after a rack in Madrid. We had similar with a budget Spanish provider, can't name them but not Contabo. Their "stability feature" was actually a state table overflow on cheap firewalls. Every 48 hours they flushed conntrack. BGP died, IPSec died, everything.
Moved to OVHcloud Strasbourg. More expensive, no funny business.
swimming upstream since 2019 🐟