e23e568319
Consider the case where a DR router is performing a graceful restart, and all neighbors attached to the DR network have their priorities set to zero. According to RFC 3623, the router should reclaim its DR status while coming back up once it receives a Hello packet from a neighbor listing the router as the DR, and the associated interface is in Waiting state. The problem arises when the DR election starts. Since the router is already elected the DR, and no BDR will be elected (since all neighbors have their priorities set to zero), the AdjOk event won't be triggered at the end of the DR election as it would normally happen. That causes all neighbors reachable over the broadcast interface to get stuck in the 2-Way state. Fix this corner case by always triggering the AdjOk event at the end of the DR election process when a GR is in progress. Triggering the AdjOk event when not necessary should never be a problem as the neighbor FSM is already prepared to deal with that. Signed-off-by: Renato Westphal <renato@opensourcerouting.org> |
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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