92c92ae7c6
TL;DR; BGP keeps advertising prefixes which were already removed via `network` command. This was happening randomly, but with this patch, no issues happened. Before: ``` frr# sh ip bgp neighbors 10.0.5.1 advertised-routes BGP table version is 586, local router ID is 44.44.33.43, vrf id 0 Default local pref 100, local AS 2 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self Origin codes: i - IGP, e - EGP, ? - incomplete RPKI validation codes: V valid, I invalid, N Not found Network Next Hop Metric LocPrf Weight Path *> 15.15.15.0/24 0.0.0.0 0 32768 2 i ============> stale entry *> 15.15.16.0/24 0.0.0.0 0 32768 2 i *> 15.15.17.0/24 0.0.0.0 0 32768 2 i frr# sh ip bgp 15.15.15.0/24 % Network not in table ``` Logs: ``` root@b03d1542-0215-5ecf-013d-af2a7150a4f5:~# cat /log/syslog/frr.log | grep 15.15.15.0 2024/12/08 07:56:58 BGP: [K423X-ETGCQ] group_announce_route_walkcb: afi=IPv4, safi=unicast, p=15.15.15.0/24 2024/12/08 07:56:58 BGP: [T5JFA-13199] subgroup_process_announce_selected: p=15.15.15.0/24, selected=0xde4060 2024/12/08 07:56:58 BGP: [K423X-ETGCQ] group_announce_route_walkcb: afi=IPv4, safi=unicast, p=15.15.15.0/24 2024/12/08 07:56:58 BGP: [T5JFA-13199] subgroup_process_announce_selected: p=15.15.15.0/24, selected=0xde4060 2024/12/08 07:56:58 BGP: [HVRWP-5R9NQ] u78:s77 send UPDATE 15.15.15.0/24 IPv4 unicast ``` Or imagine the situation where withdrawals are postponed for 20-30s., blackholing happens. Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org> |
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| .github | ||
| alpine | ||
| babeld | ||
| bfdd | ||
| bgpd | ||
| debian | ||
| doc | ||
| docker | ||
| eigrpd | ||
| fpm | ||
| gdb | ||
| grpc | ||
| include | ||
| isisd | ||
| ldpd | ||
| lib | ||
| m4 | ||
| mgmtd | ||
| mlag | ||
| nhrpd | ||
| ospf6d | ||
| ospfclient | ||
| ospfd | ||
| pathd | ||
| pbrd | ||
| pceplib | ||
| pimd | ||
| pkgsrc | ||
| python | ||
| qpb | ||
| redhat | ||
| ripd | ||
| ripngd | ||
| sharpd | ||
| snapcraft | ||
| staticd | ||
| tests | ||
| tools | ||
| vrrpd | ||
| vtysh | ||
| watchfrr | ||
| yang | ||
| zebra | ||
| .clang-format | ||
| .dockerignore | ||
| .flake8 | ||
| .git-blame-ignore-revs | ||
| .gitignore | ||
| .isort.cfg | ||
| .pylintrc | ||
| .travis.yml | ||
| bootstrap.sh | ||
| buildtest.sh | ||
| config.version.in | ||
| configure.ac | ||
| COPYING | ||
| Makefile.am | ||
| README.md | ||
| stamp-h.in | ||
| version.h | ||
FRRouting
FRR is free software that implements and manages various IPv4 and IPv6 routing protocols. It runs on nearly all distributions of Linux and BSD and supports all modern CPU architectures.
FRR currently supports the following protocols:
- BGP
- OSPFv2
- OSPFv3
- RIPv1
- RIPv2
- RIPng
- IS-IS
- PIM-SM/MSDP
- LDP
- BFD
- Babel
- PBR
- OpenFabric
- VRRP
- EIGRP (alpha)
- NHRP (alpha)
Installation & Use
For source tarballs, see the releases page.
For Debian and its derivatives, use the APT repository at https://deb.frrouting.org/.
Instructions on building and installing from source for supported platforms may be found in the developer docs.
Once installed, please refer to the user guide for instructions on use.
Community
The FRRouting email list server is located here and offers the following public lists:
| Topic | List |
|---|---|
| Development | dev@lists.frrouting.org |
| Users & Operators | frog@lists.frrouting.org |
| Announcements | announce@lists.frrouting.org |
For chat, we currently use Slack. You can join by clicking the "Slack" link under the Participate section of our website.
Contributing
FRR maintains developer's documentation which contains the project workflow and expectations for contributors. Some technical documentation on project internals is also available.
We welcome and appreciate all contributions, no matter how small!
Security
To report security issues, please use our security mailing list:
security [at] lists.frrouting.org