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Commit Graph

589 Commits

Author SHA1 Message Date
Ondrej Zajicek (work)
5caf32efa2 Doc: Fix flowspec example
Thanks to Matt Corallo for the bugreport.
2021-04-03 20:09:32 +02:00
Ondrej Zajicek (work)
0d1a11cca3 Doc: Document automatic RPKI reload 2021-03-15 17:51:33 +01:00
Ondrej Zajicek (work)
6489a2450e Doc: Document channel debug options 2021-03-15 16:16:32 +01:00
Vincent Bernat
714238716e BGP: Add support for BGP hostname capability
This is an implementation of draft-walton-bgp-hostname-capability-02.
It is implemented since quite some time for FRR and in datacenter, this
gives a nice output to avoid using IP addresses.

It is disabled by default. The hostname is retrieved from uname(2) and
can be overriden with "hostname" option. The domain name is never set
nor displayed.

Minor changes by committer.
2021-02-10 16:53:57 +01:00
Ondrej Zajicek (work)
a141959f07 Doc: Describe per-nexthop static route options
Also remove description of (no longer supported) per-route 'bfd' option,
and add examples of IPv6 routes with link-local nexthops.
2021-01-07 01:20:56 +01:00
Ondrej Zajicek (work)
4155104c90 BGP: Deprecate 'missing lladdr' option
The option is not implemented since transition to 2.0 and no plan to add it.
Also remove some deprecated RTS_* valus from documentation.

Thanks to Sébastien Parisot for notification.
2021-01-06 14:44:23 +01:00
Ondrej Zajicek (work)
8cc5bb09e3 Filter: Add 'weight' route attribute
Add 'weight' route attribute that allows to get and set ECMP weight of
nexthops. Similar to 'gw' attribute, it is limited to the first nexthop,
but it is useful for handling BGP multipath, where an ECMP route is
merged from multiple regular routes.
2020-12-02 05:02:26 +01:00
Ondrej Zajicek (work)
3347aaafec Static: Support for multiple routes with the same network
Add support for proper handling of multiple routes with the same network
to the static protocol. Routes are distinguished by internal index, which
is assigned automatically (sequentially for routes within each network).
Having different route preference or igp_metric attribute is optional.
2020-11-19 16:38:39 +01:00
Nigel Kukard
df65d519d6 Doc: Added example of static routes with BGP large communities 2020-11-18 18:00:12 +01:00
Ondrej Zajicek (work)
6ea8a46ccb Doc: Fix typo
Thanks to Hexhu for the bugreport.
2020-11-15 16:28:13 +01:00
Ondrej Zajicek (work)
4a42e7e925 BFD: Update documentation about per-session options 2020-11-12 04:50:45 +01:00
Ondrej Zajicek (work)
fc1e3211b1 RPKI: Add 'ignore max length' option
Add 'ignore max length' option to RPKI protocol, which ignores received
max length in ROA records and instead uses max value (32 or 128). This
may be useful for implementing loose RPKI check for blackholes.
2020-10-11 01:00:54 +02:00
Ondrej Zajicek (work)
6c11dbcf28 Doc: Fix missing semicolons
Thanks to Marco Gartmann for the bugreport.
2020-10-05 14:52:55 +02:00
Ondrej Zajicek (work)
14ce8904e7 Doc: Fix typo
Thanks to Sergey Kulikov for the bugreport.
2020-10-05 14:45:01 +02:00
Kenth Eriksson
71e08edd94 Doc: Add 'ptp address' to OSPF doc overview 2020-06-03 23:05:29 +02:00
Ondrej Zajicek (work)
c1632ad0f3 OSPF: Fix handling of unnumbered PtPs
This issue has a long history. In 2012, we changed data field for
unnumbered PtP links from iface id (specified by RFC) to IP address based
on reports of bugs in Quagga that required it, and we used out-of-band
information to distinquish unnumberred PtPs with the same local IP
address.

Then with OSPF graceful restart implementation, we found that we can no
longer use out-of-band information, and we need to use only LSAdb info
for routing table calculation, but i forgot to finish handling of this
case, so multiple unnumbered PtPs with the same local IP addresses were
broken.

Considering that even recent Mikrotik RouterOS has broken next hop
calculation that depends on IP address in PtP link data field, we
cannot just switch back to the iface id for unnumbered PtP links.

The patch makes two changes: First, it goes back to use out-of-band
(position) info for distinguishing local interfaces in SPF when graceful
restart is not enabled, while still uses LSAdb-only approach for SPF
calculation when graceful restart is enabled.

Second, it adds OSPF interface option 'ptp address', which controls
whether IP address or iface id is used in data field. It is enabled
by default except for unnumbered PtP links with enabled graceful
restart.

Thanks to Kenth Eriksson for the bugreport and Joakim Tjernlund for
suggestions.
2020-05-26 18:21:43 +02:00
Ondrej Zajicek (work)
1ca7665fa4 Nest: Allow key id 0
There is nothing in RFCs specifying that id 0 is not allowed. Some
implementations does not support it, while some other use key id 0 by
default. We allow it but start with key id 1 by default.

Thanks to Kenth Eriksson for the bugreport.
2020-05-19 02:50:47 +02:00
Ondrej Zajicek (work)
b729e731f9 RIP: Triggered RIP (demand circuit) documentation 2020-05-19 02:42:22 +02:00
Ondrej Zajicek (work)
ec430a7fee Nest: Implement BGP path mask loop operator
Implement regex-like '+' operator in BGP path masks to match previous
path mask item multiple times. This is useful as ASNs may appear
multiple times in paths due to path prepending for traffic engineering
purposes.
2020-05-18 16:25:08 +02:00
Ondrej Zajicek (work)
82bfee76f0 Filter: Remove quitbird command
No need for this debug filter command and it can be abused from CLI.
2020-05-02 02:47:18 +02:00
Ondrej Zajicek (work)
a109056145 Doc: Update prefix set comment 2020-04-08 13:11:51 +02:00
Ondrej Zajicek (work)
7f9adafc10 BFD: Option to specify which class of BFD sessions are accepted
Allows to configure IPv4/IPv6-only or direct/multihop-only BFD protocol
instances.
2020-01-28 18:07:25 +01:00
Ondrej Zajicek (work)
3232d17186 Doc: Fix documentation of BGP gateway option
Thanks to Nico Schottelius for the bugreport.
2019-12-16 18:08:40 +01:00
Ondrej Zajicek (work)
ff2ca10cba Filter: Add support for src/dst accessors for Flowspec and SADR 2019-12-09 04:23:01 +01:00
Ondrej Zajicek (work)
0b228fca04 BGP: Add option to enforce first AS in AS_PATH
This is optional check described in RFC 4271. Although this can be also
done by filters, it is widely implemented option in BGP implementations.

Thanks to Eugene Bogomazov for the original patch.
2019-11-10 02:06:07 +01:00
Ondrej Zajicek (work)
becda5638a Doc: Minor fix 2019-11-05 16:29:47 +01:00
Ondrej Zajicek (work)
d54a69ac7f Doc: Add documentation for BGP option 'allow as sets' 2019-11-05 16:00:25 +01:00
Ondrej Zajicek (work)
be7c1aef42 BGP: RFC 8654 got released 2019-10-26 01:32:24 +02:00
Ondrej Zajicek (work)
eeb2c61653 Doc: Minor documentation fixes
Thanks to Christoph for the bugreport.
2019-10-10 22:43:41 +02:00
Ondrej Zajicek (work)
09ee846d92 BGP: AIGP metric support (RFC 7311) 2019-10-09 17:53:23 +02:00
Ondrej Zajicek
15a7583787 Doc: Fix duplicated lines
Thanks to elados93 for the patch.
2019-10-08 14:20:25 +02:00
Ondrej Zajicek (work)
532471967e Doc: Update BGP mask documentation 2019-09-10 17:28:06 +02:00
Ondrej Zajicek (work)
b7d7599ce3 BGP: implement Adj-RIB-Out
The patch implements optional internal export table to a channel and
hooks it to BGP so it can be used as Adj-RIB-Out. When enabled, all
exported (post-filtered) routes are stored there. An export table can be
examined using e.g. 'show route export table bgp1.ipv4'.
2019-08-14 06:02:33 +02:00
Ondrej Zajicek (work)
70a4320bdd RAdv: Allow solicited RAs to be sent as unicast
Add option to send solicited router advertisements as unicast directly
to soliciting nodes instead of as multicast to all-nodes group.
2019-08-12 00:43:19 +02:00
Ondrej Zajicek (work)
96e4d0960c Change 'graceful down' command to 'graceful restart' and update docs
The command initiating planned graceful restart including bird shutdown
should be called 'graceful restart' instead of 'graceful down', as the
later should be reserved for graceful shutdown in style of RFC 8326.
2019-07-31 19:45:29 +02:00
Ondrej Zajicek (work)
8c703ecf73 Doc: Update documentation about VRFs and BFD 2019-07-30 19:21:06 +02:00
Vincent Bernat
e840cb9cd5 Doc: Fix typo in BGP dynamic names feature description 2019-07-09 15:30:45 +02:00
Ondrej Zajicek (work)
6c0f85d5de Doc: OSPF graceful restart options 2019-06-30 22:11:29 +02:00
Ondrej Zajicek (work)
8a68316eb9 Nest: Add command to request graceful restart
When 'graceful down' command is entered, protocols are shut down
with regard to graceful restart. Namely Kernel protocol does
not remove routes and BGP protocol does not send notification,
just closes the connection.
2019-06-30 21:29:24 +02:00
Ondrej Zajicek (work)
dbbe4a783b Doc: Dynamic BGP 2019-04-30 16:16:50 +02:00
Ondrej Filip
df092aa1de Small type in doc. 2019-04-24 13:49:18 +02:00
Ondrej Zajicek (work)
23ee6b1cd6 BGP: Promiscuous ASN mode
Allow to specify just 'internal' or 'external' for remote neighbor
instead of specific ASN. In the second case that means BGP peers with
any non-local ASNs are accepted.
2019-04-03 15:54:50 +02:00
Ondrej Zajicek (work)
3a22a6e858 Doc: Route attribute cleanups 2019-03-19 19:38:32 +01:00
Ondrej Zajicek (work)
3c3605818f BGP: Mandatory option for channels
Allow to mark channel to be mandatory, and do not allow BGP sessions if
no common AFI/SAFI is established.
2019-03-19 17:44:50 +01:00
Ondrej Zajicek (work)
900fda4411 Doc: Detect SP/OpenSP automatically 2019-02-19 18:20:07 +01:00
Ondrej Zajicek (work)
ee95f281f0 Doc: Add documentation for OSPF retransmit delay option
Thanks to Igor Podlesny for notification.
2019-01-26 21:02:35 +01:00
Ondrej Zajicek (work)
1c730ee761 Doc: Remove doc for already removed option 2019-01-26 20:44:37 +01:00
Maria Matějka
82b742533b Perf: Protocol to measure BIRD performance internally
This protocol is highly experimental and nobody should use it in
production. Anyway it may help you getting some insight into what eats
so much time in filter processing.
2018-12-18 15:08:31 +01:00
Ondrej Zajicek (work)
1cab2b4a7c BGP: Extend 'next hop keep' and 'next hop self' options
Extend 'next hop keep' and 'next hop self' options to have boolean values
(enabled / disabled) and also values 'ibgp'/ 'ebgp' to restrict it to
routes received from IBGP / EBGP. This allows to have it enabled by
default in some cases, matches features of other implementations, and
allows to handle some strange cases like EBGP border router with 'next
hop self' also doing IBGP route reflecting.

Change default of 'next hop keep' to enabled for route servers, and
'ibgp' for route reflectors.

Update documentation for these options.
2018-12-16 23:44:24 +01:00
Ondrej Zajicek (work)
1e0fccd1af Doc: Move root of code documentation to doc dir
It reduces clutter in root and also avoid collision with doc dir on
case-insensitive filesystems when name back to Doc.
2018-12-14 01:53:32 +01:00
Ondrej Zajicek (work)
6b5ad2066a Doc: Document log rotation feature 2018-12-12 16:54:23 +01:00
Ondrej Zajicek (work)
9e92f357be Doc: Document BGP import table option 2018-12-12 16:04:15 +01:00
Ondrej Zajicek (work)
01fd00f5ed Doc: Fix typo in previous LinuxDoc change 2018-12-11 18:43:58 +01:00
Jan Maria Matejka
9a5ef043c1 Merge branch 'mq-custom' into int-new 2018-12-06 09:55:34 +01:00
Maria Matejka
265419a369 Custom route attributes
For local route marking purposes, local custom route attributes may be
defined. These attributes are seamlessly stripped after export filter to
every real protocol like Kernel, BGP or OSPF, they however pass through
pipes. We currently allow at most 256 custom attributes.

This should be much faster than currently used bgp communities
for marking routes.
2018-12-06 09:55:21 +01:00
Robert Scheck
0e4920632a Doc: Allow overriding $SGML_CATALOG_FILES using distribution specific paths 2018-12-04 18:14:04 +01:00
Robert Scheck
f26bf60fb5 Doc: Add alternative path for SGML ISO entities 8879.1986 to $SGML_CATALOG_FILES
The existing paths are valid for Debian, alternative paths are necessary
for Fedora and RHEL/CentOS.
2018-12-04 18:11:42 +01:00
Ondrej Zajicek (work)
3fda08e405 Unix: Change debugging options
The old behavior was that enabling debugging did many nontrivial changes
in BIRD behavior. The patch changes it that these changes are generally
independent. Compiling with --enable-debug now just enables compile-time
debug macros, but do not automatically activate debug mode (-d) nor local
mode (-l). Debug mode with output to file (-D) do not force foreground
mode (-f), therefore there is no need for backgroud option (-b), which is
removed. Also fixes a bug when the default log target in -D mode was
stderr instead of given debug file.
2018-12-04 16:55:25 +01:00
Ondrej Zajicek (work)
fc1b933304 MRT documentation 2018-11-21 16:00:22 +01:00
Ondrej Zajicek (work)
f2d8e6801e Filter: Make ifname attribute modifiable
Allow to change an interface associated with a route by setting
ifname attribute. It will also change the route to a direct one.
2018-11-05 22:03:21 +01:00
Ondrej Zajicek (work)
a043f2d794 Doc: Fix description of 'description'
Thanks to Clemens Schrimpe for the bugreport.
2018-08-24 18:58:06 +02:00
Ondrej Zajicek (work)
765f400f6b DOC: Remove pipe mode reference
Pipe mode was removed in 2.0, remove reference to it in the documentation.

Thanks to Piotr Wydrych for the bugreport.
2018-08-21 15:24:55 +02:00
Ondrej Zajicek (work)
d33cf3f4c3 Doc: Fix notes related to obsolete option
Thanks to Julien Dessaux for the report.
2018-08-07 14:46:24 +02:00
Ondrej Zajicek (work)
5bd734317c BGP: Long-lived graceful restart
The patch implements long-lived graceful restart for BGP, namely
draft-uttaro-idr-bgp-persistence-03.
2018-07-31 18:40:38 +02:00
Maria Matejka
c2fc4c10ac Doc: renamed progdoc files Doc -> progdoc to fix collision with doc/ folder on case-insensitive filesystems 2018-06-26 17:09:12 +02:00
Ondrej Zajicek (work)
feae132e0f Do not initialize route metrics in import_control hook
During route export, the receiving protocol often initialized route
metrics to default value in its import_control hook before export filter
was executed. This is inconsistent with the expectation that an export
filter would process the same route as one in the routing table and it
breaks setting these metrics before (e.g. for static routes directly in
static protocol).

The patch removes the initialization of route metrics in import_control
hook, the default values are already handled in rt_notify hook called
after export filters.

The patch also changed the behavior of OSPF to keep metrics when a route
is reannounced between OSPF instances (to be consistent with other
protocols) and the behavior when both ospf_metric1 and ospf_metric2
are specified (to have more expected behavior).
2018-05-24 14:51:05 +02:00
Ondrej Zajicek (work)
70fab17837 Babel: Add option to randomize router ID
When a Babel node restarts, it loses its sequence number, which can cause
its routes to be rejected by peers until the state is cleared out by other
nodes in the network (which can take on the order of minutes).

There are two ways to fix this: Having stable storage to keep the sequence
number across restarts, or picking a different router ID each time.

This implements the latter, by introducing a new option that will cause
BIRD to randomize a high 32 bits of router ID every time it starts up.
This avoids the problem at the cost of not having stable router IDs in
the network.

Thanks to Toke Hoiland-Jorgensen for the patch.
2018-05-03 16:55:11 +02:00
Ondrej Zajicek (work)
c408d807a3 Doc: Documentation for BGP disable after cease option 2018-04-03 17:31:45 +02:00
Ondrej Zajicek (work)
a63d20aa87 Doc: Documentation for BGP extended next hop feature
Thanks to Arvin Gan for the bugreport.
2018-04-03 16:53:58 +02:00
Ondrej Zajicek (work)
157f6c2aad Doc: Remove some superfluous slashes 2018-03-24 02:05:47 +01:00
Ondrej Zajicek (work)
a177e4dd04 Doc: Minor update 2018-03-21 16:33:08 +01:00
Ondrej Zajicek (work)
3b522a1e5c Doc: Redesign default config file
The old one does not work with 2.0.x.
2018-03-20 19:28:26 +01:00
Ondrej Zajicek (work)
159d619caf Doc: SADR documentation 2018-03-17 22:25:06 +01:00
Ondrej Zajicek (work)
7a8ae228f9 Doc: Update BGP documentation
Thanks to Joshua McQuistan for the bugreport.
2018-03-17 17:14:38 +01:00
Jan Maria Matejka
0575c7db72 Config: Dropped the ipv4:netmask4 syntax for IPv4 prefixes. 2018-03-08 12:57:39 +01:00
Ondrej Zajicek (work)
def6efa1ef Doc: Fix example 2018-01-23 14:26:18 +01:00
Ondrej Zajicek (work)
3831b61966 BGP: Require explicit import and export policies for EBGP channels
To comply with RFC 8212 requirements.
2018-01-16 04:14:49 +01:00
Ondrej Zajicek (work)
72163bd5f3 Nest: Allow modification of channels inherited from templates
Multiple definitions of same channels are forbidden, but inherited
channel can be redefined. In such case channel options are merged.
2018-01-09 18:42:22 +01:00
Ondrej Zajicek (work)
8f8671bcde Filter: Handle undefined BGP paths as empty
The same is already done for clists. Also fixes defined() to work
properly for paths and clists.
2018-01-03 15:44:05 +01:00
Ondrej Zajicek (work)
4842eeaad3 Minor fix in documentation 2017-12-21 00:16:52 +01:00
Jan Maria Matejka
71c51aa4ab Doc: Fixed misc sgml bugs, no content change 2017-12-13 10:28:50 +01:00
Ondrej Zajicek (work)
cf3e3845c2 Doc: Documentation update 2017-12-10 22:47:38 +01:00
Ondrej Zajicek (work)
7fc55925be Several minor fixes 2017-12-10 00:55:34 +01:00
Jan Maria Matejka
3e52d112d7 Docs: Update to v2.0 2017-12-08 16:27:19 +01:00
Ondrej Zajicek (work)
830ba75e6d Merge commit '1e8721e2aeccfbc3f533e8b8abc07582cee77e9a' into int-new 2017-12-07 21:54:47 +01:00
Ondrej Zajicek (work)
46434a3cad Merge commit '7b2c5f3d2826e3175bf31b1c36056c9efc587a2b' into int-new 2017-12-07 18:35:46 +01:00
Ondrej Zajicek (work)
4ff15a75c5 Merge commit '98bb80a243b58c43453e9be69d19d0350286549c' into int-new 2017-12-07 17:41:09 +01:00
Ondrej Zajicek (work)
b47eaefe12 Babel: Revamp cost computation and run route selection when cost change
Also fix several minor bugs and add 'limit' option for k-out-of-j
link sensing strategy. Change default from 8-of-16 to 12-of-16.
Change IHU expiry factor from 1.5 to 3.5 (as in RFC 6126).
2017-12-07 13:53:42 +01:00
Ondrej Zajicek (work)
f047271cb9 Timers: Parse and format functions for microsecond times
Date/time output (e.g. in logs, show commands) can use %f to specify
subsecond time. By default, millisecond precision is used in output.
2017-12-07 13:49:27 +01:00
Ondrej Zajicek (work)
2d7fb19c3c OSPF: Add option to disable OSPFv3-AF 2017-10-10 16:10:02 +02:00
Ondrej Zajicek (work)
d9573a40ec Doc: Update sgml2* tools
The old ones do not work on current Debian.
2017-10-10 15:06:39 +02:00
Ondrej Zajicek (work)
7e8d6116df Doc: Fix reference 2017-10-10 14:40:22 +02:00
Michal 'vorner' Vaner
18352188ed RAdv: Documentation for more specific routes 2017-10-10 14:40:22 +02:00
Ondrej Zajicek (work)
18ea2ea759 Doc: Document 'empty' operator
Thanks to Alexander Zubkov for the notification.
2017-09-13 13:10:50 +02:00
Ondrej Zajicek (work)
943478b00f Basic VRF support
Add basic VRF (virtual routing and forwarding) support. Protocols can be
associated with VRFs, such protocols will be restricted to interfaces
assigned to the VRF (as reported by Linux kernel) and will use sockets
bound to the VRF. E.g., different multihop BGP instances can use diffent
kernel routing tables to handle BGP TCP connections.

The VRF support is preliminary, currently there are several limitations:

- Recent Linux kernels (4.11) do not handle correctly sockets bound
to interaces that are part of VRF, so most protocols other than multihop
BGP do not work. This will be fixed by future kernel versions.

- Neighbor cache ignores VRFs. Breaks config with the same prefix on
local interfaces in different VRFs. Not much problem as single hop
protocols do not work anyways.

- Olock code ignores VRFs. Breaks config with multiple BGP peers with the
same IP address in different VRFs.

- Incoming BGP connections are not dispatched according to VRFs.
Breaks config with multiple BGP peers with the same IP address in
different VRFs. Perhaps we would need some kernel API to read VRF of
incoming connection? Or probably use multiple listening sockets in
int-new branch.

- We should handle master VRF interface up/down events and perhaps
disable associated protocols when VRF goes down. Or at least disable
associated interfaces.

- Also we should check if the master iface is really VRF iface and
not some other kind of master iface.

- BFD session request dispatch should be aware of VRFs.

- Perhaps kernel protocol should read default kernel table ID from VRF
iface so it is not necessary to configure it.

- Perhaps we should have per-VRF default table.
2017-09-06 17:38:48 +02:00
Ondrej Zajicek (work)
08b6a617e8 RAdv: Some style nitpicks 2017-08-30 16:34:15 +02:00
Michal 'vorner' Vaner
ec7d6a506e RAdv: Configure how long a dead prefix is advertised 2017-08-30 16:34:15 +02:00
Ondrej Zajicek (work)
300bd0eb85 Babel: Add documentation for dual-stack operation and options
This updates the documentation for the Babel protocol to mention the fact
that it now supports dual-stack operation, and adds documentation for the
new next hop options.

Thanks to Toke Høiland-Jørgensen <toke@toke.dk> for the patch.
2017-06-09 11:56:20 +02:00
Ondrej Zajicek (work)
8e25f7d229 One last update to NEWS and example 2017-04-29 22:14:36 +02:00
Ondrej Zajicek (work)
e919601aaf Merge master into int-new 2017-04-28 11:19:12 +02:00