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This feature adds an L3 & L2 VPN application that makes use of the VPN
and Encap SAFIs. This code is currently used to support IETF NVO3 style
operation. In NVO3 terminology it provides the Network Virtualization
Authority (NVA) and the ability to import/export IP prefixes and MAC
addresses from Network Virtualization Edges (NVEs). The code supports
per-NVE tables.
The NVE-NVA protocol used to communicate routing and Ethernet / Layer 2
(L2) forwarding information between NVAs and NVEs is referred to as the
Remote Forwarder Protocol (RFP). OpenFlow is an example RFP. For
general background on NVO3 and RFP concepts see [1]. For information on
Openflow see [2].
RFPs are integrated with BGP via the RF API contained in the new "rfapi"
BGP sub-directory. Currently, only a simple example RFP is included in
Quagga. Developers may use this example as a starting point to integrate
Quagga with an RFP of their choosing, e.g., OpenFlow. The RFAPI code
also supports the ability import/export of routing information between
VNC and customer edge routers (CEs) operating within a virtual
network. Import/export may take place between BGP views or to the
default zebera VRF.
BGP, with IP VPNs and Tunnel Encapsulation, is used to distribute VPN
information between NVAs. BGP based IP VPN support is defined in
RFC4364, BGP/MPLS IP Virtual Private Networks (VPNs), and RFC4659,
BGP-MPLS IP Virtual Private Network (VPN) Extension for IPv6 VPN . Use
of both the Encapsulation Subsequent Address Family Identifier (SAFI)
and the Tunnel Encapsulation Attribute, RFC5512, The BGP Encapsulation
Subsequent Address Family Identifier (SAFI) and the BGP Tunnel
Encapsulation Attribute, are supported. MAC address distribution does
not follow any standard BGB encoding, although it was inspired by the
early IETF EVPN concepts.
The feature is conditionally compiled and disabled by default.
Use the --enable-bgp-vnc configure option to enable.
The majority of this code was authored by G. Paul Ziemba
<paulz@labn.net>.
[1] http://tools.ietf.org/html/draft-ietf-nvo3-nve-nva-cp-req
[2] https://www.opennetworking.org/sdn-resources/technical-library
Now includes changes needed to merge with cmaster-next.
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* bgpd.texi: Document the -l argument. Update the 'BGP decision process' table
to reflect what /actually/ is implemented. Add docs on 'compare-routerid' in
the bestpath section.
Add a section on MED, to highlight the issues it has by default, and to
highlight that it is terminally broken for its original purpose in many
modern iBGP topologies.
Mention the potential workarounds and fixes.
* routemap.texi: set an anchor on 'set metric' so bgpd.texi can reference it.
(cherry picked from commit d5062d218994885710fe02f516f0c06025b4fc9a)
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BGPd: Support matching on local preference in route-map
This patch adds support for matching on local preference in
BGP route-map.
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* draft-ietf-idr-as-pathlimit doesn't seem to have gone anywhere, and its
author does not think it will make progress in IDR. Remove all support
introduced for it, but leave stubs for the commands to avoid breaking
any configurations.
Basically reverts cecab5e9725792e60a5e4b473e238a14cd85815d.
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2007-07-31 Paul Jakma <paul.jakma@sun.com>
* (general) Support for draft-ietf-idr-as-pathlimit-03.
* bgp_attr.h: (struct attr) Add pathlimit struct
bgp_attr.c: (attr_str) Add BGP_ATTR_AS_PATHLIMIT string.
(attrhash_key_make) tally pathlimit too
(attrhash_cmp) cmp pathlimit attr
(bgp_attr_aspathlimit) New, parse AS_PATHLIMIT attr.
(bgp_attr_parse) ditto
(bgp_packet_attribute) Write out AS_PATHLIMIT when set
(bgp_dump_routes_attr) ditto
* bgp_route.h: (struct bgp_static) Add TTL field
* bgp_route.c: (bgp_announce_check) Drop paths that are over
their hop-count TTL before sending via EBGP.
Mangle ASN in pathlimit for confeds/private as best we can.
(bgp_static_update_{rsclient,main}) Add any configure pathlimit
information.
(bgp_pathlimit_update_parents) New, update atomic-aggr setting for
parents of an aspathlimit'ed static.
(bgp_static_set) Add TTL argument, for all the 'bgp network'
commands.
Call previous for TTL changed statics.
(bgp_static_unset) Call pathlimit_update_parents.
(various bgp network commands) Add 'pathlimit <0-255>' qualifier
to all the various forms, bar route-map - which can set ttl
itself.
* bgp_routemap.c: (general) Add support for 'set pathlimit ttl' and
'match pathlimit as'.
* doc/bgpd.texi: Document 'network ... pathlimit <ttl>'
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* quagga.info: Update auto-built file
* ospf6d.texi: Add example config
* bgpd.texi: Add example configs. Couple of cleanups of format
and macros.
* routemap.texi: Add an explanation of how route-maps work.
Document the call and exit-policy commands.
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* defines.texi.in: New file, texi variables should be set here,
autoconf substitution is available. Define common AUTHORS,
COPYRIGHT_YEAR and COPYRIGHT_STR vars.
* (global): Make use of makeinfo node pointer auto-creation
to avoid having to fully specify links for nodes, so we only have
to specify current node name - simplifies text slightly.
Remove extraneous newlines which appear to cause extra blank pages
to be added in output.
Update copyright strings which appear in various places to
use the new COPYRIGHT_STR texinfo variable.
Change url to uref, the former need not output an actual
hyperlink depending on version of texinfo, the latter should if
supported by the format (eg PDF).
* texinfo.tex: Update to a more recent version. previous file
was many many years old. This file should possibly be removed
altogether, and allowed to be installed by automake.
* quagga.texi: Make use of automake's version.texi feature to
have VERSION and some other vars auto-defined. include
defines.texi. Change copyright strings to use the COPYRIGHT_STR
variable.
* install.texi: Make the privs section an actual section. Ditto for
the Linux notes.
* overview.texi: Supply URL for Quagga, where format allows. Tidy up
one or two paragraphs slightly.
Update the section on supported platforms.
Remove the ZNOG list stuff, direct reader to the website for
further information on email lists.
* vtysh.texi: Update the integrated config file section. Make the
commands sections so correct PDF indexes are built.
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