mirror of
https://github.com/thegeeklab/ansible-later.git
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664 lines
25 KiB
Python
664 lines
25 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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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'network'}
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DOCUMENTATION = '''
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---
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module: nxos_bgp
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extends_documentation_fragment: nxos
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version_added: "2.2"
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short_description: Manages BGP configuration.
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description:
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- Manages BGP configurations on NX-OS switches.
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author:
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- Jason Edelman (@jedelman8)
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- Gabriele Gerbino (@GGabriele)
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notes:
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- Tested against NXOSv 7.3.(0)D1(1) on VIRL
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- C(state=absent) removes the whole BGP ASN configuration when
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C(vrf=default) or the whole VRF instance within the BGP process when
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using a different VRF.
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- Default when supported restores params default value.
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- Configuring global parmas 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,
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Integer in ASPLAIN or ASDOT notation.
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required: true
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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
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the global BGP.
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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
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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
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different (but equal-length) 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 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
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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
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only between paths 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
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routes that do not carry the MED attribute, making these routes
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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
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from among the paths 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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confederation_id:
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description:
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- Routing domain confederation AS.
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confederation_peers:
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description:
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- AS confederation parameters.
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disable_policy_batching:
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description:
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- Enable/Disable the batching evaluation of prefix advertisement
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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
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to all peers with prefix list.
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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
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to all peers with prefix list.
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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
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the first AS number listed in the AS path attribute for eBGP.
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On NX-OS, this property is only supported in the
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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: ['size_small', 'size_medium', 'size_large', 'size_disable', 'default']
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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: ['size_small', 'size_medium', 'size_large', 'size_disable', 'default']
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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: ['size_small', 'size_medium', 'size_large', 'size_disable', 'default']
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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: ['size_small', 'size_medium', 'size_large', 'size_disable', 'default']
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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
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directly connected BGP peer goes down. Only supported in the
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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.
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On NX-OS, this property is only supported in the global
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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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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
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restarting BGP peer.
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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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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
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attribute. Valid values are between 1 and 512.
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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
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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.
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Valid values are between 1 and 60.
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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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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
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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,
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in seconds.
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timer_bgp_hold:
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description:
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- Set BGP hold timer.
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timer_bgp_keepalive:
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description:
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- Set BGP keepalive timer.
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state:
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description:
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- Determines whether the config should be present or not
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on the device.
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default: present
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choices: ['present','absent']
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'''
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EXAMPLES = '''
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- name: Configure a simple ASN
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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.module_utils.network.nxos.nxos import get_config, load_config
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from ansible.module_utils.network.nxos.nxos import nxos_argument_spec, check_args
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.network.common.config import CustomNetworkConfig
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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(r'^\s+{0} size\s(?P<value>.*)$'.format(command), config, re.M)
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if command == 'event-history detail':
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value = False
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else:
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value = 'size_small'
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if has_size:
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value = 'size_%s' % has_size.group('value')
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elif arg in ['enforce_first_as', 'fast_external_fallover']:
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no_command_re = re.compile(r'no\s+{0}\s*'.format(command), re.M)
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value = True
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if no_command_re.search(config):
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value = False
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elif arg in BOOL_PARAMS:
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has_command = re.search(r'^\s+{0}\s*$'.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(r'(?:{0}\s)(?P<value>.*)'.format(command), re.M)
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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(indent=2, contents=get_config(module, flags=['bgp all']))
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asn_re = re.compile(r'.*router\sbgp\s(?P<existing_asn>\d+(\.\d+)?).*', re.S)
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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 (module.params['vrf'] == 'default' or
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arg not in GLOBAL_PARAMS):
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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 not existing and module.params['vrf'] != 'default' and module.params['state'] == 'present':
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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':
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existing_value = ' '.join(existing_value)
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commands.append('no {0} {1}'.format(key, existing_value))
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elif not value:
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existing_value = existing_commands.get(key)
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if existing_value:
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commands.append('no {0} {1}'.format(key, existing_value))
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elif key == 'confederation peers':
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commands.append('{0} {1}'.format(key, value))
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elif key.startswith('timers bgp'):
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command = 'timers bgp {0} {1}'.format(
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proposed['timer_bgp_keepalive'],
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proposed['timer_bgp_hold'])
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if command not in commands:
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commands.append(command)
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else:
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if value.startswith('size'):
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value = value.replace('_', ' ')
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command = '{0} {1}'.format(key, value)
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commands.append(command)
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parents = []
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if commands:
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commands = fix_commands(commands)
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parents = ['router bgp {0}'.format(module.params['asn'])]
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if module.params['vrf'] != 'default':
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parents.append('vrf {0}'.format(module.params['vrf']))
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elif proposed:
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if module.params['vrf'] != 'default':
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commands.append('vrf {0}'.format(module.params['vrf']))
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parents = ['router bgp {0}'.format(module.params['asn'])]
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else:
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commands.append('router bgp {0}'.format(module.params['asn']))
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candidate.add(commands, parents=parents)
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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'),
|
|
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()
|
|
check_args(module, warnings)
|
|
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()
|
|
load_config(module, candidate)
|
|
result['changed'] = True
|
|
result['commands'] = candidate
|
|
else:
|
|
result['commands'] = []
|
|
|
|
module.exit_json(**result)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|