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doc: Add some additional warnings around Turning off bgp capabilities

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FRR supports the ability to turn off the negotation of bgp capabilities.
Provide a few bread crumbs to the operator that it might not be as
useful as they would hope.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2019-10-03 09:26:46 -04:00
parent 6d7b7e4257
commit 7cdc9530ef
1 changed files with 7 additions and 5 deletions
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12
doc/user/bgp.rst
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@ -1140,11 +1140,8 @@ Capability Negotiation
Negotiation. Please use *dont-capability-negotiate* command to disable the Negotiation. Please use *dont-capability-negotiate* command to disable the
feature. feature.
.. index:: neighbor PEER dont-capability-negotiate .. index:: [no] neighbor PEER dont-capability-negotiate
.. clicmd:: neighbor PEER dont-capability-negotiate .. clicmd:: [no] neighbor PEER dont-capability-negotiate
.. index:: no neighbor PEER dont-capability-negotiate
.. clicmd:: no neighbor PEER dont-capability-negotiate
Suppress sending Capability Negotiation as OPEN message optional parameter Suppress sending Capability Negotiation as OPEN message optional parameter
to the peer. This command only affects the peer is configured other than to the peer. This command only affects the peer is configured other than
@ -1159,6 +1156,11 @@ Capability Negotiation
configured by *override-capability*, *bgpd* ignores received capabilities configured by *override-capability*, *bgpd* ignores received capabilities
then override negotiated capabilities with configured values. then override negotiated capabilities with configured values.
Additionally the operator should be reminded that this feature fundamentally
disables the ability to use widely deployed BGP features. BGP unnumbered,
hostname support, AS4, Addpath, Route Refresh, ORF, Dynamic Capabilities,
and graceful restart.
.. index:: neighbor PEER override-capability .. index:: neighbor PEER override-capability
.. clicmd:: neighbor PEER override-capability .. clicmd:: neighbor PEER override-capability