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doc: add documentation for IS-IS Segment Routing

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Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>
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Olivier Dugeon 2019-08-08 16:44:23 -03:00
parent 26f6acafc3
commit 9389175b75
1 changed files with 52 additions and 0 deletions
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doc/user/isisd.rst
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@ -470,6 +470,50 @@ Traffic Engineering
.. _debugging-isis:
Segment Routing
===============
This is an EXPERIMENTAL support of Segment Routing as per draft
`draft-ietf-isis-segment-routing-extensions-25.txt` for MPLS dataplane.
It supports IPv4, IPv6 and ECMP and has been tested against Cisco & Juniper
routers.
Known limitations:
- No support for level redistribution (L1 to L2 or L2 to L1)
- No support for binding SID
- No support for SRMS
.. index:: [no] segment-routing on
.. clicmd:: [no] segment-routing on
Enable Segment Routing.
.. index:: [no] segment-routing global-block (0-1048575) (0-1048575)
.. clicmd:: [no] segment-routing global-block (0-1048575) (0-1048575)
Seet the Segment Routing Global Block i.e. the label range used by MPLS
to store label in the MPLS FIB.
.. index:: [no] segment-routing node-msd (1-16)
.. clicmd:: [no] segment-routing node-msd (1-16)
Set the Maximum Stack Depth supported by the router. The value depend of the
MPLS dataplane. E.g. for Linux kernel, since version 4.13 it is 32.
.. index:: [no] segment-routing prefix <A.B.C.D/M|X:X::X:X/M> <absolute (16-1048575)|index (0-65535)> [no-php-flag|explicit-null]
.. clicmd:: [no] segment-routing prefix <A.B.C.D/M|X:X::X:X/M> <absolute (16-1048575)|index (0-65535) [no-php-flag|explicit-null]
Set the Segment Routing index or absolute label value for the specified
prefix. The 'no-php-flag' means NO Penultimate Hop Popping that allows SR
node to request to its neighbor to not pop the label. The 'explicit-null'
flag allows SR node to request to its neighbor to send IP packet with the
EXPLICIT-NULL label.
.. index:: show isis segment-routing prefix-sids
.. clicmd:: show isis segment-routing prefix-sids
Show detailed information about all learned Segment Routing Prefix-SIDs.
Debugging ISIS
==============
@ -566,6 +610,14 @@ Debugging ISIS
Update related packets.
.. index:: debug isis sr-events
.. clicmd:: debug isis sr-events
.. index:: no debug isis sr-events
.. clicmd:: no debug isis sr-events
IS-IS Segment Routing events.
.. index:: show debugging isis
.. clicmd:: show debugging isis