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# encoding: utf-8 |
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""" |
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announce/vpn.py |
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Created by Thomas Mangin on 2017-07-09. |
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Copyright (c) 2009-2017 Exa Networks. All rights reserved. |
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License: 3-clause BSD. (See the COPYRIGHT file) |
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""" |
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from exabgp.rib.change import Change |
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from exabgp.bgp.message import OUT |
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from exabgp.protocol.family import AFI |
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from exabgp.protocol.family import SAFI |
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from exabgp.bgp.message.update.nlri import VPLS |
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from exabgp.bgp.message.update.attribute import Attributes |
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from exabgp.configuration.announce import ParseAnnounce |
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from exabgp.configuration.static.parser import attribute |
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from exabgp.configuration.static.parser import origin |
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from exabgp.configuration.static.parser import med |
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from exabgp.configuration.static.parser import as_path |
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from exabgp.configuration.static.parser import local_preference |
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from exabgp.configuration.static.parser import atomic_aggregate |
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from exabgp.configuration.static.parser import aggregator |
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from exabgp.configuration.static.parser import originator_id |
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from exabgp.configuration.static.parser import cluster_list |
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from exabgp.configuration.static.parser import community |
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from exabgp.configuration.static.parser import extended_community |
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from exabgp.configuration.static.parser import name as named |
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from exabgp.configuration.static.parser import split |
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from exabgp.configuration.static.parser import watchdog |
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from exabgp.configuration.static.parser import withdraw |
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from exabgp.configuration.static.mpls import route_distinguisher |
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from exabgp.configuration.l2vpn.parser import vpls |
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from exabgp.configuration.l2vpn.parser import vpls_endpoint |
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from exabgp.configuration.l2vpn.parser import vpls_size |
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from exabgp.configuration.l2vpn.parser import vpls_offset |
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from exabgp.configuration.l2vpn.parser import vpls_base |
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from exabgp.configuration.l2vpn.parser import next_hop |
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class AnnounceVPLS (ParseAnnounce): |
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definition = [ |
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'endpoint <vpls endpoint id; integer>', |
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'base <label base; integer>', |
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'offset <block offet; interger>', |
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'size <block size; integer>', |
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'next-hop <ip>', |
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'med <16 bits number>', |
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'rd <ipv4>:<port>|<16bits number>:<32bits number>|<32bits number>:<16bits number>', |
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'origin IGP|EGP|INCOMPLETE', |
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'as-path [ <asn>.. ]', |
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'local-preference <16 bits number>', |
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'atomic-aggregate', |
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'community <16 bits number>', |
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'extended-community target:<16 bits number>:<ipv4 formated number>', |
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'originator-id <ipv4>', |
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'cluster-list <ipv4>', |
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'label <15 bits number>', |
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'attribute [ generic attribute format ]' |
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'name <mnemonic>', |
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'split /<mask>', |
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'watchdog <watchdog-name>', |
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'withdraw', |
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] |
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syntax = \ |
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'vpls %s\n' % ' '.join(definition) |
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known = { |
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'rd': route_distinguisher, |
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'attribute': attribute, |
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'next-hop': next_hop, |
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'origin': origin, |
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'med': med, |
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'as-path': as_path, |
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'local-preference': local_preference, |
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'atomic-aggregate': atomic_aggregate, |
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'aggregator': aggregator, |
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'originator-id': originator_id, |
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'cluster-list': cluster_list, |
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'community': community, |
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'extended-community': extended_community, |
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'name': named, |
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'split': split, |
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'watchdog': watchdog, |
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'withdraw': withdraw, |
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'endpoint': vpls_endpoint, |
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'offset': vpls_offset, |
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'size': vpls_size, |
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'base': vpls_base, |
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} |
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action = { |
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'attribute': 'attribute-add', |
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'origin': 'attribute-add', |
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'med': 'attribute-add', |
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'as-path': 'attribute-add', |
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'local-preference': 'attribute-add', |
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'atomic-aggregate': 'attribute-add', |
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'aggregator': 'attribute-add', |
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'originator-id': 'attribute-add', |
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'cluster-list': 'attribute-add', |
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'community': 'attribute-add', |
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'extended-community': 'attribute-add', |
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'name': 'attribute-add', |
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'split': 'attribute-add', |
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'watchdog': 'attribute-add', |
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'withdraw': 'attribute-add', |
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'next-hop': 'nlri-set', |
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'route-distinguisher': 'nlri-set', |
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'rd': 'nlri-set', |
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'endpoint': 'nlri-set', |
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'offset': 'nlri-set', |
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'size': 'nlri-set', |
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'base': 'nlri-set', |
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} |
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assign = { |
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'next-hop': 'nexthop', |
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'rd': 'rd', |
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'route-distinguisher': 'rd', |
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'endpoint': 'endpoint', |
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'offset': 'offset', |
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'size': 'size', |
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'base': 'base', |
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} |
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name = 'vpls' |
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afi = None |
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def __init__ (self, tokeniser, scope, error, logger): |
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ParseAnnounce.__init__(self,tokeniser,scope,error,logger) |
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def clear (self): |
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return True |
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def post (self): |
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return self._check() |
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@staticmethod |
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def check (change,afi): |
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# No check performed :-( |
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return True |
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View Code Duplication |
def l2vpn_vpls (tokeniser,afi,safi): |
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change = Change( |
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VPLS(None,None,None,None,None), |
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Attributes() |
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) |
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while True: |
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command = tokeniser() |
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if not command: |
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break |
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action = AnnounceVPLS.action[command] |
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if 'nlri-set' in action: |
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change.nlri.assign(AnnounceVPLS.assign[command],AnnounceVPLS.known[command](tokeniser)) |
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elif 'attribute-add' in action: |
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change.attributes.add(AnnounceVPLS.known[command](tokeniser)) |
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elif action == 'nexthop-and-attribute': |
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nexthop,attribute = AnnounceVPLS.known[command](tokeniser) |
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change.nlri.nexthop = nexthop |
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change.attributes.add(attribute) |
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else: |
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raise ValueError('vpls: unknown command "%s"' % command) |
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return [change,] |
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@ParseAnnounce.register('vpls','extend-name','l2vpn') |
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def vpls_v4 (tokeniser): |
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return l2vpn_vpls(tokeniser,AFI.l2vpn,SAFI.vpls) |
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Exa-Networks /
exabgp
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