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The FRRouting Protocol Suite
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Soumya Roy 6a75d33b5c zebra: Bring up 514 BGP neighbor sessions 
Issue:
When 514 inerfaces/neighbors are configured, it creates socket error,
"Cannot allocate memory", when back to back V6 RA messages are tried
to be sent over the socket. This prevents interface, to know its peer's
link local address. Socket error comes when 1) try to join ICMPv6 all
router multicast group, back to back for all interfaces 2)send back to
back RA for all interfaces

Fix:
1)For ICMPv6 join case, we check if the interface has already joined
all router group, if not try to join. On failure, retry joining after
random amount of time determined 1 ms to ICMPV6_JOIN_TIMER_EXP_MS(100 ms)
2) For RA issue case, batch sending of RA mesages using wheel timer

Testing:
Monitor BGP session running sh bgp summary command

Before fix:
r1# sh bgp summary

IPv4 Unicast Summary:
BGP router identifier 192.168.1.1, local AS number 1001 VRF default vrf-id 0
BGP table version 0
RIB entries 0, using 0 bytes of memory
Peers 515, using 12 MiB of memory

Neighbor        V         AS   MsgRcvd   MsgSent   TblVer  InQ OutQ  Up/Down State/PfxRcd   PfxSnt Desc
r1-eth0         4       1002        89        90        0    0    0 00:07:10            0        0 N/A
r1-eth1         4       1002        89        90        0    0    0 00:07:10            0        0 N/A
r1-eth2         4       1002        89        90        0    0    0 00:07:10            0        0 N/A
r1-eth3         4       1002        89        90        0    0    0 00:07:10            0        0 N/A
r1-eth4         4       1002        89        90        0    0    0 00:07:10            0        0 N/A
r1-eth5         4       1002        89        90        0    0    0 00:07:10            0        0 N/A

…..<snip>...
r1-eth252       4       1002        31        29        0    0    0 00:02:08            0        0 N/A
r1-eth253       4       1002        31        29        0    0    0 00:02:08            0        0 N/A
r1-eth254       4       1002        31        29        0    0    0 00:02:08            0        0 N/A
r1-eth255       4       1002        31        29        0    0    0 00:02:08            0        0 N/A
r1-eth256       4          0         0         0        0    0    0    never         Idle        0 N/A
r1-eth257       4          0         0         0        0    0    0    never         Idle        0 N/A
r1-eth258       4          0         0         0        0    0    0    never         Idle        0 N/A
r1-eth259       4          0         0         0        0    0    0    never         Idle        0 N/A
r1-eth260       4          0         0         0        0    0    0    never         Idle        0 N/A
……..<snip>…..
r1-eth511       4          0         0         0        0    0    0    never         Idle        0 N/A
r1-eth512       4          0         0         0        0    0    0    never         Idle        0 N/A
r1-eth513       4          0         0         0        0    0    0    never         Idle        0 N/A
r1-eth514       4          0         0         0        0    0    0    never         Idle        0 N/A
After fix:
r1# show bgp summary

IPv4 Unicast Summary:
BGP router identifier 192.168.1.1, local AS number 1001 VRF default vrf-id 0
BGP table version 0
RIB entries 0, using 0 bytes of memory
Peers 515, using 12 MiB of memory

Neighbor        V         AS   MsgRcvd   MsgSent   TblVer  InQ OutQ  Up/Down State/PfxRcd   PfxSnt Desc
r1-eth0         4       1002        87        87        0    0    0 00:07:04            0        0 N/A
r1-eth1         4       1002        87        87        0    0    0 00:07:04            0        0 N/A
r1-eth2         4       1002        87        87        0    0    0 00:07:04            0        0 N/A
r1-eth3         4       1002        64        67        0    0    0 00:05:09            0        0 N/A
r1-eth4         4       1002        87        87        0    0    0 00:07:04            0        0 N/A
r1-eth5         4       1002        87        87        0    0    0 00:07:04            0        0 N/A
r1-eth6         4       1002        67        70        0    0    0 00:05:22            0        0 N/A
r1-eth7         4       1002        87        87        0    0    0 00:07:04            0        0 N/A
r1-eth8         4       1002        87        87        0    0    0 00:07:04            0        0 N/A
....
r1-eth499       4       1002        43        43        0    0    0 00:03:22            0        0 N/A
r1-eth500       4       1002        43        43        0    0    0 00:03:22            0        0 N/A
r1-eth501       4       1002        19        22        0    0    0 00:01:21            0        0 N/A
r1-eth502       4       1002        43        43        0    0    0 00:03:22            0        0 N/A
r1-eth503       4       1002        43        43        0    0    0 00:03:22            0        0 N/A
r1-eth504       4       1002        20        23        0    0    0 00:01:30            0        0 N/A
r1-eth505       4       1002        43        43        0    0    0 00:03:22            0        0 N/A
r1-eth506       4       1002        43        43        0    0    0 00:03:22            0        0 N/A
r1-eth507       4       1002        22        25        0    0    0 00:01:39            0        0 N/A
r1-eth508       4       1002        43        43        0    0    0 00:03:22            0        0 N/A
r1-eth509       4       1002        17        20        0    0    0 00:01:13            0        0 N/A
r1-eth510       4       1002        43        43        0    0    0 00:03:22            0        0 N/A
r1-eth511       4       1002        43        43        0    0    0 00:03:22            0        0 N/A
r1-eth512       4       1002        19        22        0    0    0 00:01:22            0        0 N/A
r1-eth513       4       1002        43        43        0    0    0 00:03:22            0        0 N/A
r1-eth514       4       1002        43        43        0    0    0 00:03:22            0        0 N/A

Signed-off-by: Soumya Roy <souroy@nvidia.com>
2025-03-05 06:15:56 +00:00
.github ci: do apt-get update before installing required modules 2024-06-08 17:29:19 -04:00
alpine docker: Set ABUILD_APK_INDEX_OPTS for frr build 2024-06-14 16:33:32 +03:00
babeld babeld: changes for code maintainability 2024-09-06 07:02:51 +05:30
bfdd Merge pull request #16987 from opensourcerouting/bfd-echo-sock 2024-11-26 08:51:07 -05:00
bgpd Merge pull request #17654 from mjstapp/remove_bgp_pRN 2024-12-17 14:44:18 -05:00
debian Merge pull request #17375 from opensourcerouting/fix/use_pcre2 2024-11-18 12:34:18 -05:00
doc Merge pull request #17252 from nabahr/mcast-mode 2024-12-16 09:57:31 -03:00
docker Docker: Add the ability to override FRR UID 2024-11-26 12:18:37 -05:00
eigrpd *: Modify agentx to be allowed to be called 2024-05-10 10:16:29 -04:00
fpm fpm: Allow max fpm message size to float based on ecmp 2024-10-11 09:37:37 -04:00
gdb lib: add simplified native msg support 2023-12-26 08:34:56 -05:00
grpc build: throw in a few more XREF_SETUP 2024-05-09 18:02:49 +02:00
include isisd: vlan-subif isis neighbor 2024-08-01 09:09:35 +08:00
isisd Merge pull request #16488 from JosiahMg/isis-subif-neighbor 2024-12-17 11:39:20 -05:00
ldpd ldpd: free previous config if it wasn't applied 2024-10-16 13:30:25 +02:00
lib Merge pull request #17615 from opensourcerouting/fix/ip_prefix_list_show_prefix 2024-12-17 11:30:01 -05:00
m4 build: add recursion limit for AX_RECURSIVE_EVAL 2024-01-27 19:01:19 +01:00
mgmtd lib: add flag to have libyang load internal ietf-yang-library module 2024-10-07 03:32:44 +00:00
mlag build: throw in a few more XREF_SETUP 2024-05-09 18:02:49 +02:00
nhrpd Merge pull request #16700 from louis-6wind/fix-nhrp-output 2024-11-28 17:16:24 +02:00
ospf6d Merge pull request #17363 from acooks-at-bda/fix-redundant-null-ptr-check-CID-1599962 2024-11-06 08:10:00 +02:00
ospfclient tools, ospfclient: add a config option to skip installing python scripts 2024-08-22 13:46:30 -05:00
ospfd ospfd: Correct invalid SR-MPLS output label 2024-11-23 19:05:25 +01:00
pathd *: Create termtable specific temp memory 2024-09-01 13:07:46 -04:00
pbrd pbrd: fix vrf_unchanged which may depend on other seqs 2024-12-09 12:31:29 -05:00
pceplib Merge pull request #15215 from donaldsharp/pceplib_fixup 2024-01-25 09:59:59 +02:00
pimd Merge pull request #17252 from nabahr/mcast-mode 2024-12-16 09:57:31 -03:00
pkgsrc build: homologize path handling 2024-01-27 19:02:52 +01:00
python tools: Fix syntax raw parsing for make-foobar helper 2024-11-18 11:04:27 +02:00
qpb *: add XREF_SETUP() to libraries and utilites 2024-05-02 23:03:08 +02:00
redhat packaging: Use PCRE2 for .deb/.rpm builds 2024-11-08 08:50:54 +02:00
ripd ripd: Use route_node_match instead of route_node_match_ipv4 2024-11-25 13:12:10 -05:00
ripngd ripngd: adjust header for display command 2024-07-05 09:31:39 +08:00
sharpd Merge pull request #17445 from cscarpitta/fix/sharp-use-ipv6-max-bitlen 2024-11-17 14:19:58 +02:00
snapcraft bfdd: remove control socket obsolete code 2024-07-25 10:37:11 -03:00
staticd *: Fix up improper handling of nexthops for nexthop tracking 2024-10-15 11:57:23 -04:00
tests zebra: Bring up 514 BGP neighbor sessions 2025-03-05 06:15:56 +00:00
tools tools: Add rip support bundle commands 2024-12-13 10:56:17 -05:00
vrrpd vrrpd: iterate over all ancillary messages 2024-10-07 13:05:10 -03:00
vtysh lib,vtysh: Use backoff setsockopt option for freebsd 2024-12-03 18:49:59 -05:00
watchfrr watchfrr: increase restart timer 20s -> 90s 2024-12-09 12:35:42 -05:00
yang Merge pull request #17252 from nabahr/mcast-mode 2024-12-16 09:57:31 -03:00
zebra zebra: Bring up 514 BGP neighbor sessions 2025-03-05 06:15:56 +00:00
.clang-format *: Modify clang-format column limit to 100 2024-09-26 09:58:32 -04:00
.dockerignore docker: Make docker image on CentOS 7 2019-11-26 19:29:30 +00:00
.flake8 style: add format checker config that matches FRR style standards 2023-04-18 05:18:26 -04:00
.git-blame-ignore-revs tools: Add black formatting commit to .git-blame-ignore-revs 2024-04-28 12:50:51 +03:00
.gitignore python: add tool to expand typesafe definitions 2024-04-29 17:37:49 +02:00
.isort.cfg style: add format checker config that matches FRR style standards 2023-04-18 05:18:26 -04:00
.pylintrc style: add format checker config that matches FRR style standards 2023-04-18 05:18:26 -04:00
.travis.yml lib: libyang2 add missed conversion 2021-05-17 22:13:59 -04:00
bootstrap.sh build: turn on automake warnings (& symlinks) 2021-04-21 15:42:37 +02:00
buildtest.sh build: update packaging & docs for dir changes 2024-01-27 19:01:19 +01:00
config.version.in build: carry --with-pkg-extra-version into tarballs 2018-10-24 15:11:50 +02:00
configure.ac build: FRR 10.3 development version 2024-10-08 13:06:40 -05:00
COPYING *: sort out & explain licenses used in FRR 2023-02-09 12:46:13 +01:00
Makefile.am build: homologize path handling 2024-01-27 19:02:52 +01:00
README.md doc: Fix the link that points to Slack invitation in README 2022-03-24 13:13:37 +02:00
stamp-h.in Initial revision 2002-12-13 20:15:29 +00:00
version.h build: make builddir include path consistent 2021-04-21 15:42:33 +02:00

README.md

Icon

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