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Merge pull request #4292 from qlyoung/doc-bgp-maximum-prefix

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doc: add doc for bgp maximum-prefix knob
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Jafar Al-Gharaibeh 2019-05-09 17:00:16 -05:00 committed by GitHub
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doc/user/bgp.rst
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@ -942,14 +942,18 @@ Configuring Peers
.. index:: [no] neighbor PEER maximum-prefix NUMBER
.. clicmd:: [no] neighbor PEER maximum-prefix NUMBER
.. index:: [no] neighbor PEER local-as AS-NUMBER no-prepend
.. clicmd:: [no] neighbor PEER local-as AS-NUMBER no-prepend
Sets a maximum number of prefixes we can receive from a given peer. If this
number is exceeded, the BGP session will be destroyed.
.. index:: [no] neighbor PEER local-as AS-NUMBER no-prepend replace-as
.. clicmd:: [no] neighbor PEER local-as AS-NUMBER no-prepend replace-as
In practice, it is generally preferable to use a prefix-list to limit what
prefixes are received from the peer instead of using this knob. Tearing down
the BGP session when a limit is exceeded is far more destructive than merely
rejecting undesired prefixes. The prefix-list method is also much more
granular and offers much smarter matching criterion than number of received
prefixes, making it more suited to implementing policy.
.. index:: [no] neighbor PEER local-as AS-NUMBER
.. clicmd:: [no] neighbor PEER local-as AS-NUMBER
.. index:: [no] neighbor PEER local-as AS-NUMBER [no-prepend] [replace-as]
.. clicmd:: [no] neighbor PEER local-as AS-NUMBER [no-prepend] [replace-as]
Specify an alternate AS for this BGP process when interacting with the
specified peer. With no modifiers, the specified local-as is prepended to