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docs: Add notes about limited MPLS-TE support

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Add notes to several docs about the limits to FRR's current
MPLS-TE support, which is limited to some routing protocol
LSA/TLV support. It wasn't very clear that FRR does not offer
a complete TE/RSVP-TE solution at this time.

Also removed some stale info about configure script options.

Signed-off-by: Mark Stapp <mjs@voltanet.io>
This commit is contained in:
Mark Stapp 2019-08-06 14:59:01 -04:00
parent 3c1c172f02
commit 85400b29ac
5 changed files with 40 additions and 20 deletions
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14
doc/user/installation.rst
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@ -149,6 +149,11 @@ options from the list below.
Turn off building of pimd. On some BSD platforms pimd will not build properly due
to lack of kernel support.
.. option:: --disable-vrrpd
Turn off building of vrrpd. Linux is required for vrrpd support;
other platforms are not supported.
.. option:: --disable-pbrd
Turn off building of pbrd. This daemon currently requires linux in order to function
@ -194,11 +199,6 @@ options from the list below.
Disable building of the example OSPF-API client.
.. option:: --disable-ospf-ri
Disable support for OSPF Router Information (RFC4970 & RFC5088) this
requires support for Opaque LSAs and Traffic Engineering.
.. option:: --disable-isisd
Do not build isisd.
@ -211,10 +211,6 @@ options from the list below.
Enable IS-IS topology generator.
.. option:: --enable-isis-te
Enable Traffic Engineering Extension for ISIS (RFC5305)
.. option:: --enable-realms
Enable the support of Linux Realms. Convert tag values from 1-255 into a

6
doc/user/isisd.rst
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@ -423,6 +423,12 @@ Showing ISIS information
Traffic Engineering
===================
.. note::
At this time, FRR offers partial support for some of the routing
protocol extensions that can be used with MPLS-TE. FRR does not
support a complete RSVP-TE solution currently.
.. index:: mpls-te on
.. clicmd:: mpls-te on

17
doc/user/ospfd.rst
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@ -906,10 +906,13 @@ Opaque LSA
.. index:: no capability opaque
.. clicmd:: no capability opaque
*ospfd* supports Opaque LSA (:rfc:`2370`) as fundamental for MPLS Traffic
Engineering LSA. Prior to used MPLS TE, opaque-lsa must be enable in the
configuration file. Alternate command could be "mpls-te on"
(:ref:`ospf-traffic-engineering`).
*ospfd* supports Opaque LSA (:rfc:`2370`) as partial support for
MPLS Traffic Engineering LSAs. The opaque-lsa capability must be
enabled in the configuration. An alternate command could be
"mpls-te on" (:ref:`ospf-traffic-engineering`). Note that FRR
offers only partial support for some of the routing protocol
extensions that are used with MPLS-TE; it does not support a
complete RSVP-TE solution.
.. index:: show ip ospf database (opaque-link|opaque-area|opaque-external)
.. clicmd:: show ip ospf database (opaque-link|opaque-area|opaque-external)
@ -936,6 +939,12 @@ Opaque LSA
Traffic Engineering
===================
.. note::
At this time, FRR offers partial support for some of the routing
protocol extensions that can be used with MPLS-TE. FRR does not
support a complete RSVP-TE solution currently.
.. index:: mpls-te on
.. clicmd:: mpls-te on

4
doc/user/overview.rst
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@ -239,7 +239,9 @@ The indicators have the following semantics:
* :mark:`CP` - control plane only (i.e. BGP route server / route reflector)
* :mark:`N` - daemon/feature not supported by operating system
.. Known Kernel Issues:
Known Kernel Issues:
====================
- Linux
v6 Route Replacement - Linux kernels before 4.11 can cause issues with v6 route deletion when you

19
doc/user/zebra.rst
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@ -193,18 +193,25 @@ Standard Commands
Link Parameters Commands
------------------------
.. note::
At this time, FRR offers partial support for some of the routing
protocol extensions that can be used with MPLS-TE. FRR does not
support a complete RSVP-TE solution currently.
.. index:: link-params
.. clicmd:: link-params
.. index:: no link-param
.. clicmd:: no link-param
Enter into the link parameters sub node. At least 'enable' must be set to
activate the link parameters, and consequently Traffic Engineering on this
interface. MPLS-TE must be enable at the OSPF
(:ref:`ospf-traffic-engineering`) or ISIS (:ref:`isis-traffic-engineering`)
router level in complement to this. Disable link parameters for this
interface.
Enter into the link parameters sub node. At least 'enable' must be
set to activate the link parameters, and consequently routing
information that could be used as part of Traffic Engineering on
this interface. MPLS-TE must be enable at the OSPF
(:ref:`ospf-traffic-engineering`) or ISIS
(:ref:`isis-traffic-engineering`) router level in complement to
this. Disable link parameters for this interface.
Under link parameter statement, the following commands set the different TE values: