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When trying to connect to a BGP peer that does not respons, the 'show bgp neighbors' command does not give any indication on the local and remote addresses used: > # show bgp neighbors > BGP neighbor is 192.0.2.150, remote AS 65500, local AS 65500, internal link > Local Role: undefined > Remote Role: undefined > BGP version 4, remote router ID 0.0.0.0, local router ID 192.0.2.1 > BGP state = Connect > [..] > Connections established 0; dropped 0 > Last reset 00:00:04, Waiting for peer OPEN (n/a) > Internal BGP neighbor may be up to 255 hops away. > BGP Connect Retry Timer in Seconds: 120 > Next connect timer due in 117 seconds > Read thread: off Write thread: off FD used: 27 The addressing information (address and port) are only available when TCP session is established, whereas this information is present at the system level: > root@ubuntu2204:~# netstat -pan | grep 192.0.2.1 > tcp 0 0 192.0.2.1:179 192.0.2.150:38060 SYN_RECV - > tcp 0 1 192.0.2.1:46526 192.0.2.150:179 SYN_SENT 488310/bgpd Add the display for outgoing BGP session, as the information in the getsockname() API provides information for connected streams. When getpeername() API does not give any information, use the peer configuration (destination port is encoded in peer->port). > # show bgp neighbors > BGP neighbor is 192.0.2.150, remote AS 65500, local AS 65500, internal link > Local Role: undefined > Remote Role: undefined > BGP version 4, remote router ID 0.0.0.0, local router ID 192.0.2.1 > BGP state = Connect > [..] > Connections established 0; dropped 0 > Last reset 00:00:16, Waiting for peer OPEN (n/a) > Local host: 192.0.2.1, Local port: 46084 > Foreign host: 192.0.2.150, Foreign port: 179 Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com> |
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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