788 lines
26 KiB
Python
788 lines
26 KiB
Python
#!/usr/bin/python
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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DOCUMENTATION = """
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module: nxos_bgp
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extends_documentation_fragment:
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- cisco.nxos.nxos
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short_description: (deprecated, removed after 2023-01-27) Manages BGP configuration.
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description:
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- Manages BGP configurations on NX-OS switches.
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version_added: 1.0.0
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author:
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- Jason Edelman (@jedelman8)
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- Gabriele Gerbino (@GGabriele)
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deprecated:
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alternative: nxos_bgp_global
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why: Updated module released with more functionality.
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removed_at_date: '2023-01-27'
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notes:
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- Tested against NXOSv 7.3.(0)D1(1) on VIRL
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- Unsupported for Cisco MDS
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- C(state=absent) removes the whole BGP ASN configuration when C(vrf=default) or the
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whole VRF instance within the BGP process when using a different VRF.
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- Default when supported restores params default value.
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- Configuring global params is only permitted if C(vrf=default).
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options:
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asn:
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description:
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- BGP autonomous system number. Valid values are String, Integer in ASPLAIN or
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ASDOT notation.
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required: true
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type: str
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vrf:
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description:
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- Name of the VRF. The name 'default' is a valid VRF representing the global BGP.
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default: 'default'
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type: str
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bestpath_always_compare_med:
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description:
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- Enable/Disable MED comparison on paths from different autonomous systems.
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type: bool
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bestpath_aspath_multipath_relax:
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description:
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- Enable/Disable load sharing across the providers with different (but equal-length)
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AS paths.
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type: bool
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bestpath_compare_routerid:
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description:
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- Enable/Disable comparison of router IDs for identical eBGP paths.
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type: bool
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bestpath_compare_neighborid:
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description:
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- Enable/Disable neighborid. Use this when more paths available than max path
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config.
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type: bool
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bestpath_cost_community_ignore:
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description:
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- Enable/Disable Ignores the cost community for BGP best-path calculations.
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type: bool
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bestpath_med_confed:
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description:
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- Enable/Disable enforcement of bestpath to do a MED comparison only between paths
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originated within a confederation.
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type: bool
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bestpath_med_missing_as_worst:
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description:
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- Enable/Disable assigns the value of infinity to received routes that do not
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carry the MED attribute, making these routes the least desirable.
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type: bool
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bestpath_med_non_deterministic:
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description:
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- Enable/Disable deterministic selection of the best MED pat from among the paths
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from the same autonomous system.
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type: bool
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cluster_id:
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description:
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- Route Reflector Cluster-ID.
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type: str
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confederation_id:
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description:
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- Routing domain confederation AS.
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type: str
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confederation_peers:
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description:
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- AS confederation parameters.
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type: list
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elements: str
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disable_policy_batching:
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description:
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- Enable/Disable the batching evaluation of prefix advertisement to all peers.
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type: bool
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disable_policy_batching_ipv4_prefix_list:
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description:
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- Enable/Disable the batching evaluation of prefix advertisements to all peers
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with prefix list.
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type: str
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disable_policy_batching_ipv6_prefix_list:
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description:
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- Enable/Disable the batching evaluation of prefix advertisements to all peers
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with prefix list.
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type: str
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enforce_first_as:
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description:
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- Enable/Disable enforces the neighbor autonomous system to be the first AS number
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listed in the AS path attribute for eBGP. On NX-OS, this property is only supported
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in the global BGP context.
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type: bool
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event_history_cli:
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description:
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- Enable/Disable cli event history buffer.
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choices:
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- size_small
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- size_medium
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- size_large
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- size_disable
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- default
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- 'true'
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- 'false'
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type: str
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event_history_detail:
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description:
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- Enable/Disable detail event history buffer.
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choices:
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- size_small
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- size_medium
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- size_large
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- size_disable
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- default
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- 'true'
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- 'false'
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type: str
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event_history_events:
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description:
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- Enable/Disable event history buffer.
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choices:
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- size_small
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- size_medium
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- size_large
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- size_disable
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- default
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- 'true'
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- 'false'
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type: str
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event_history_periodic:
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description:
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- Enable/Disable periodic event history buffer.
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choices:
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- size_small
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- size_medium
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- size_large
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- size_disable
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- default
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- 'true'
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- 'false'
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type: str
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fast_external_fallover:
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description:
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- Enable/Disable immediately reset the session if the link to a directly connected
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BGP peer goes down. Only supported in the global BGP context.
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type: bool
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flush_routes:
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description:
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- Enable/Disable flush routes in RIB upon controlled restart. On NX-OS, this property
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is only supported in the global BGP context.
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type: bool
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graceful_restart:
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description:
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- Enable/Disable graceful restart.
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type: bool
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graceful_restart_helper:
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description:
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- Enable/Disable graceful restart helper mode.
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type: bool
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graceful_restart_timers_restart:
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description:
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- Set maximum time for a restart sent to the BGP peer.
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type: str
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graceful_restart_timers_stalepath_time:
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description:
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- Set maximum time that BGP keeps the stale routes from the restarting BGP peer.
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type: str
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isolate:
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description:
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- Enable/Disable isolate this router from BGP perspective.
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type: bool
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local_as:
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description:
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- Local AS number to be used within a VRF instance.
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type: str
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log_neighbor_changes:
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description:
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- Enable/Disable message logging for neighbor up/down event.
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type: bool
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maxas_limit:
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description:
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- Specify Maximum number of AS numbers allowed in the AS-path attribute. Valid
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values are between 1 and 512.
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type: str
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neighbor_down_fib_accelerate:
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description:
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- Enable/Disable handle BGP neighbor down event, due to various reasons.
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type: bool
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reconnect_interval:
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description:
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- The BGP reconnection interval for dropped sessions. Valid values are between
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1 and 60.
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type: str
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router_id:
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description:
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- Router Identifier (ID) of the BGP router VRF instance.
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type: str
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shutdown:
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description:
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- Administratively shutdown the BGP protocol.
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type: bool
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suppress_fib_pending:
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description:
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- Enable/Disable advertise only routes programmed in hardware to peers.
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type: bool
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timer_bestpath_limit:
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description:
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- Specify timeout for the first best path after a restart, in seconds.
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type: str
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timer_bgp_hold:
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description:
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- Set BGP hold timer.
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type: str
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timer_bgp_keepalive:
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description:
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- Set BGP keepalive timer.
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type: str
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state:
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description:
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- Determines whether the config should be present or not on the device.
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default: present
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choices:
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- present
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- absent
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type: str
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"""
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EXAMPLES = """
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- name: Configure a simple ASN
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cisco.nxos.nxos_bgp:
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asn: 65535
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vrf: test
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router_id: 192.0.2.1
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state: present
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"""
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RETURN = """
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commands:
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description: commands sent to the device
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returned: always
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type: list
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sample: ["router bgp 65535", "vrf test", "router-id 192.0.2.1"]
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"""
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import re
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from ansible_collections.cisco.nxos.plugins.module_utils.network.nxos.nxos import (
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get_config,
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load_config,
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)
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from ansible_collections.cisco.nxos.plugins.module_utils.network.nxos.nxos import (
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nxos_argument_spec,
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)
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from ansible.module_utils.basic import AnsibleModule
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from ansible_collections.ansible.netcommon.plugins.module_utils.network.common.config import (
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CustomNetworkConfig,
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)
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BOOL_PARAMS = [
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"bestpath_always_compare_med",
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"bestpath_aspath_multipath_relax",
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"bestpath_compare_neighborid",
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"bestpath_compare_routerid",
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"bestpath_cost_community_ignore",
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"bestpath_med_confed",
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"bestpath_med_missing_as_worst",
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"bestpath_med_non_deterministic",
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"disable_policy_batching",
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"enforce_first_as",
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"fast_external_fallover",
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"flush_routes",
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"graceful_restart",
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"graceful_restart_helper",
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"isolate",
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"log_neighbor_changes",
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"neighbor_down_fib_accelerate",
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"shutdown",
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"suppress_fib_pending",
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]
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GLOBAL_PARAMS = [
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"disable_policy_batching",
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"disable_policy_batching_ipv4_prefix_list",
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"disable_policy_batching_ipv6_prefix_list",
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"enforce_first_as",
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"event_history_cli",
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"event_history_detail",
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"event_history_events",
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"event_history_periodic",
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"fast_external_fallover",
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"flush_routes",
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"isolate",
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"suppress_fib_pending",
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"shutdown",
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]
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PARAM_TO_DEFAULT_KEYMAP = {
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"timer_bgp_keepalive": "60",
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"timer_bgp_hold": "180",
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"timer_bestpath_limit": "300",
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"graceful_restart": True,
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"graceful_restart_timers_restart": "120",
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"graceful_restart_timers_stalepath_time": "300",
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"reconnect_interval": "60",
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"suppress_fib_pending": True,
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"fast_external_fallover": True,
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"enforce_first_as": True,
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"event_history_cli": True,
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"event_history_detail": False,
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"event_history_events": True,
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"event_history_periodic": True,
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"maxas_limit": "",
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"router_id": "",
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"cluster_id": "",
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"disable_policy_batching_ipv4_prefix_list": "",
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"disable_policy_batching_ipv6_prefix_list": "",
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"local_as": "",
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"confederation_id": "",
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}
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PARAM_TO_COMMAND_KEYMAP = {
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"asn": "router bgp",
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"bestpath_always_compare_med": "bestpath always-compare-med",
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"bestpath_aspath_multipath_relax": "bestpath as-path multipath-relax",
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"bestpath_compare_neighborid": "bestpath compare-neighborid",
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"bestpath_compare_routerid": "bestpath compare-routerid",
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"bestpath_cost_community_ignore": "bestpath cost-community ignore",
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"bestpath_med_confed": "bestpath med confed",
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"bestpath_med_missing_as_worst": "bestpath med missing-as-worst",
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"bestpath_med_non_deterministic": "bestpath med non-deterministic",
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"cluster_id": "cluster-id",
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"confederation_id": "confederation identifier",
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"confederation_peers": "confederation peers",
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"disable_policy_batching": "disable-policy-batching",
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"disable_policy_batching_ipv4_prefix_list": "disable-policy-batching ipv4 prefix-list",
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"disable_policy_batching_ipv6_prefix_list": "disable-policy-batching ipv6 prefix-list",
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"enforce_first_as": "enforce-first-as",
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"event_history_cli": "event-history cli",
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"event_history_detail": "event-history detail",
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"event_history_events": "event-history events",
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"event_history_periodic": "event-history periodic",
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"fast_external_fallover": "fast-external-fallover",
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"flush_routes": "flush-routes",
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"graceful_restart": "graceful-restart",
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"graceful_restart_helper": "graceful-restart-helper",
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"graceful_restart_timers_restart": "graceful-restart restart-time",
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"graceful_restart_timers_stalepath_time": "graceful-restart stalepath-time",
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"isolate": "isolate",
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"local_as": "local-as",
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"log_neighbor_changes": "log-neighbor-changes",
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"maxas_limit": "maxas-limit",
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"neighbor_down_fib_accelerate": "neighbor-down fib-accelerate",
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"reconnect_interval": "reconnect-interval",
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"router_id": "router-id",
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"shutdown": "shutdown",
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"suppress_fib_pending": "suppress-fib-pending",
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"timer_bestpath_limit": "timers bestpath-limit",
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"timer_bgp_hold": "timers bgp",
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"timer_bgp_keepalive": "timers bgp",
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"vrf": "vrf",
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}
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def get_value(arg, config):
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command = PARAM_TO_COMMAND_KEYMAP.get(arg)
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if command.split()[0] == "event-history":
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has_size = re.search(
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r"^\s+{0} size\s(?P<value>.*)$".format(command), config, re.M
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)
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if command == "event-history detail":
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value = False
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else:
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value = "size_small"
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if has_size:
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value = "size_%s" % has_size.group("value")
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elif arg in ["enforce_first_as", "fast_external_fallover"]:
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no_command_re = re.compile(r"no\s+{0}\s*".format(command), re.M)
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value = True
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if no_command_re.search(config):
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value = False
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elif arg in BOOL_PARAMS:
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has_command = re.search(r"^\s+{0}\s*$".format(command), config, re.M)
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value = False
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if has_command:
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value = True
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else:
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command_val_re = re.compile(
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r"(?:{0}\s)(?P<value>.*)".format(command), re.M
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)
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value = ""
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has_command = command_val_re.search(config)
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if has_command:
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found_value = has_command.group("value")
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if arg == "confederation_peers":
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value = found_value.split()
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elif arg == "timer_bgp_keepalive":
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value = found_value.split()[0]
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elif arg == "timer_bgp_hold":
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split_values = found_value.split()
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if len(split_values) == 2:
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value = split_values[1]
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elif found_value:
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value = found_value
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return value
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def get_existing(module, args, warnings):
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existing = {}
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netcfg = CustomNetworkConfig(
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indent=2, contents=get_config(module, flags=["bgp all"])
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)
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asn_re = re.compile(
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r".*router\sbgp\s(?P<existing_asn>\d+(\.\d+)?).*", re.S
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)
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asn_match = asn_re.match(str(netcfg))
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if asn_match:
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existing_asn = asn_match.group("existing_asn")
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bgp_parent = "router bgp {0}".format(existing_asn)
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if module.params["vrf"] != "default":
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parents = [bgp_parent, "vrf {0}".format(module.params["vrf"])]
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else:
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parents = [bgp_parent]
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config = netcfg.get_section(parents)
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if config:
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for arg in args:
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if arg != "asn" and (
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module.params["vrf"] == "default"
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or arg not in GLOBAL_PARAMS
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):
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existing[arg] = get_value(arg, config)
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existing["asn"] = existing_asn
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if module.params["vrf"] == "default":
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existing["vrf"] = "default"
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if (
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not existing
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and module.params["vrf"] != "default"
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and module.params["state"] == "present"
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):
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msg = "VRF {0} doesn't exist.".format(module.params["vrf"])
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warnings.append(msg)
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return existing
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def apply_key_map(key_map, table):
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new_dict = {}
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for key in table:
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new_key = key_map.get(key)
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if new_key:
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new_dict[new_key] = table.get(key)
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return new_dict
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def state_present(module, existing, proposed, candidate):
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commands = list()
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proposed_commands = apply_key_map(PARAM_TO_COMMAND_KEYMAP, proposed)
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existing_commands = apply_key_map(PARAM_TO_COMMAND_KEYMAP, existing)
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for key, value in proposed_commands.items():
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if value is True:
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commands.append(key)
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elif value is False:
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commands.append("no {0}".format(key))
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elif value == "default":
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default_value = PARAM_TO_DEFAULT_KEYMAP.get(key)
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existing_value = existing_commands.get(key)
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if default_value:
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commands.append("{0} {1}".format(key, default_value))
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elif existing_value:
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if key == "confederation peers":
|
|
existing_value = " ".join(existing_value)
|
|
commands.append("no {0} {1}".format(key, existing_value))
|
|
elif not value:
|
|
existing_value = existing_commands.get(key)
|
|
if existing_value:
|
|
commands.append("no {0} {1}".format(key, existing_value))
|
|
elif key == "confederation peers":
|
|
commands.append("{0} {1}".format(key, value))
|
|
elif key.startswith("timers bgp"):
|
|
command = "timers bgp {0} {1}".format(
|
|
proposed["timer_bgp_keepalive"], proposed["timer_bgp_hold"]
|
|
)
|
|
if command not in commands:
|
|
commands.append(command)
|
|
else:
|
|
if value.startswith("size"):
|
|
value = value.replace("_", " ")
|
|
command = "{0} {1}".format(key, value)
|
|
commands.append(command)
|
|
|
|
parents = []
|
|
if commands:
|
|
commands = fix_commands(commands)
|
|
parents = ["router bgp {0}".format(module.params["asn"])]
|
|
if module.params["vrf"] != "default":
|
|
parents.append("vrf {0}".format(module.params["vrf"]))
|
|
elif proposed:
|
|
if module.params["vrf"] != "default":
|
|
commands.append("vrf {0}".format(module.params["vrf"]))
|
|
parents = ["router bgp {0}".format(module.params["asn"])]
|
|
else:
|
|
commands.append("router bgp {0}".format(module.params["asn"]))
|
|
|
|
candidate.add(commands, parents=parents)
|
|
|
|
|
|
def state_absent(module, existing, candidate):
|
|
commands = []
|
|
parents = []
|
|
if module.params["vrf"] == "default":
|
|
commands.append("no router bgp {0}".format(module.params["asn"]))
|
|
elif existing.get("vrf") == module.params["vrf"]:
|
|
commands.append("no vrf {0}".format(module.params["vrf"]))
|
|
parents = ["router bgp {0}".format(module.params["asn"])]
|
|
|
|
candidate.add(commands, parents=parents)
|
|
|
|
|
|
def fix_commands(commands):
|
|
local_as_command = ""
|
|
confederation_id_command = ""
|
|
confederation_peers_command = ""
|
|
|
|
for command in commands:
|
|
if "local-as" in command:
|
|
local_as_command = command
|
|
elif "confederation identifier" in command:
|
|
confederation_id_command = command
|
|
elif "confederation peers" in command:
|
|
confederation_peers_command = command
|
|
|
|
if local_as_command and confederation_id_command:
|
|
if "no" in confederation_id_command:
|
|
commands.pop(commands.index(local_as_command))
|
|
commands.pop(commands.index(confederation_id_command))
|
|
commands.append(confederation_id_command)
|
|
commands.append(local_as_command)
|
|
else:
|
|
commands.pop(commands.index(local_as_command))
|
|
commands.pop(commands.index(confederation_id_command))
|
|
commands.append(local_as_command)
|
|
commands.append(confederation_id_command)
|
|
|
|
if confederation_peers_command and confederation_id_command:
|
|
if local_as_command:
|
|
if "no" in local_as_command:
|
|
commands.pop(commands.index(local_as_command))
|
|
commands.pop(commands.index(confederation_id_command))
|
|
commands.pop(commands.index(confederation_peers_command))
|
|
commands.append(confederation_id_command)
|
|
commands.append(confederation_peers_command)
|
|
commands.append(local_as_command)
|
|
else:
|
|
commands.pop(commands.index(local_as_command))
|
|
commands.pop(commands.index(confederation_id_command))
|
|
commands.pop(commands.index(confederation_peers_command))
|
|
commands.append(local_as_command)
|
|
commands.append(confederation_id_command)
|
|
commands.append(confederation_peers_command)
|
|
else:
|
|
commands.pop(commands.index(confederation_peers_command))
|
|
commands.pop(commands.index(confederation_id_command))
|
|
commands.append(confederation_id_command)
|
|
commands.append(confederation_peers_command)
|
|
|
|
return commands
|
|
|
|
|
|
def main():
|
|
argument_spec = dict(
|
|
asn=dict(required=True, type="str"),
|
|
vrf=dict(required=False, type="str", default="default"),
|
|
bestpath_always_compare_med=dict(required=False, type="bool"),
|
|
bestpath_aspath_multipath_relax=dict(required=False, type="bool"),
|
|
bestpath_compare_neighborid=dict(required=False, type="bool"),
|
|
bestpath_compare_routerid=dict(required=False, type="bool"),
|
|
bestpath_cost_community_ignore=dict(required=False, type="bool"),
|
|
bestpath_med_confed=dict(required=False, type="bool"),
|
|
bestpath_med_missing_as_worst=dict(required=False, type="bool"),
|
|
bestpath_med_non_deterministic=dict(required=False, type="bool"),
|
|
cluster_id=dict(required=False, type="str"),
|
|
confederation_id=dict(required=False, type="str"),
|
|
confederation_peers=dict(required=False, type="list", elements="str"),
|
|
disable_policy_batching=dict(required=False, type="bool"),
|
|
disable_policy_batching_ipv4_prefix_list=dict(
|
|
required=False, type="str"
|
|
),
|
|
disable_policy_batching_ipv6_prefix_list=dict(
|
|
required=False, type="str"
|
|
),
|
|
enforce_first_as=dict(required=False, type="bool"),
|
|
event_history_cli=dict(
|
|
required=False,
|
|
choices=[
|
|
"true",
|
|
"false",
|
|
"default",
|
|
"size_small",
|
|
"size_medium",
|
|
"size_large",
|
|
"size_disable",
|
|
],
|
|
),
|
|
event_history_detail=dict(
|
|
required=False,
|
|
choices=[
|
|
"true",
|
|
"false",
|
|
"default",
|
|
"size_small",
|
|
"size_medium",
|
|
"size_large",
|
|
"size_disable",
|
|
],
|
|
),
|
|
event_history_events=dict(
|
|
required=False,
|
|
choices=[
|
|
"true",
|
|
"false",
|
|
"default",
|
|
"size_small",
|
|
"size_medium",
|
|
"size_large",
|
|
"size_disable",
|
|
],
|
|
),
|
|
event_history_periodic=dict(
|
|
required=False,
|
|
choices=[
|
|
"true",
|
|
"false",
|
|
"default",
|
|
"size_small",
|
|
"size_medium",
|
|
"size_large",
|
|
"size_disable",
|
|
],
|
|
),
|
|
fast_external_fallover=dict(required=False, type="bool"),
|
|
flush_routes=dict(required=False, type="bool"),
|
|
graceful_restart=dict(required=False, type="bool"),
|
|
graceful_restart_helper=dict(required=False, type="bool"),
|
|
graceful_restart_timers_restart=dict(required=False, type="str"),
|
|
graceful_restart_timers_stalepath_time=dict(
|
|
required=False, type="str"
|
|
),
|
|
isolate=dict(required=False, type="bool"),
|
|
local_as=dict(required=False, type="str"),
|
|
log_neighbor_changes=dict(required=False, type="bool"),
|
|
maxas_limit=dict(required=False, type="str"),
|
|
neighbor_down_fib_accelerate=dict(required=False, type="bool"),
|
|
reconnect_interval=dict(required=False, type="str"),
|
|
router_id=dict(required=False, type="str"),
|
|
shutdown=dict(required=False, type="bool"),
|
|
suppress_fib_pending=dict(required=False, type="bool"),
|
|
timer_bestpath_limit=dict(required=False, type="str"),
|
|
timer_bgp_hold=dict(required=False, type="str"),
|
|
timer_bgp_keepalive=dict(required=False, type="str"),
|
|
state=dict(
|
|
choices=["present", "absent"], default="present", required=False
|
|
),
|
|
)
|
|
argument_spec.update(nxos_argument_spec)
|
|
|
|
module = AnsibleModule(
|
|
argument_spec=argument_spec,
|
|
required_together=[["timer_bgp_hold", "timer_bgp_keepalive"]],
|
|
supports_check_mode=True,
|
|
)
|
|
|
|
warnings = list()
|
|
result = dict(changed=False, warnings=warnings)
|
|
|
|
state = module.params["state"]
|
|
|
|
if module.params["vrf"] != "default":
|
|
for param in GLOBAL_PARAMS:
|
|
if module.params[param]:
|
|
module.fail_json(
|
|
msg='Global params can be modified only under "default" VRF.',
|
|
vrf=module.params["vrf"],
|
|
global_param=param,
|
|
)
|
|
|
|
args = PARAM_TO_COMMAND_KEYMAP.keys()
|
|
existing = get_existing(module, args, warnings)
|
|
|
|
if existing.get("asn") and state == "present":
|
|
if existing.get("asn") != module.params["asn"]:
|
|
module.fail_json(
|
|
msg="Another BGP ASN already exists.",
|
|
proposed_asn=module.params["asn"],
|
|
existing_asn=existing.get("asn"),
|
|
)
|
|
|
|
proposed_args = dict(
|
|
(k, v) for k, v in module.params.items() if v is not None and k in args
|
|
)
|
|
proposed = {}
|
|
for key, value in proposed_args.items():
|
|
if key not in ["asn", "vrf"]:
|
|
if str(value).lower() == "default":
|
|
value = PARAM_TO_DEFAULT_KEYMAP.get(key, "default")
|
|
if key == "confederation_peers":
|
|
if value[0] == "default":
|
|
if existing.get(key):
|
|
proposed[key] = "default"
|
|
else:
|
|
v = set([int(i) for i in value])
|
|
ex = set([int(i) for i in existing.get(key)])
|
|
if v != ex:
|
|
proposed[key] = " ".join(str(s) for s in v)
|
|
else:
|
|
if existing.get(key) != value:
|
|
proposed[key] = value
|
|
|
|
candidate = CustomNetworkConfig(indent=3)
|
|
if state == "present":
|
|
state_present(module, existing, proposed, candidate)
|
|
elif existing.get("asn") == module.params["asn"]:
|
|
state_absent(module, existing, candidate)
|
|
|
|
if candidate:
|
|
candidate = candidate.items_text()
|
|
if not module.check_mode:
|
|
load_config(module, candidate)
|
|
result["changed"] = True
|
|
result["commands"] = candidate
|
|
else:
|
|
result["commands"] = []
|
|
|
|
module.exit_json(**result)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|