1 | # encoding: utf-8 |
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2 | """ |
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3 | nunrsvpbw.py |
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4 | |||
5 | Created by Evelio Vila on 2016-12-01. |
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6 | Copyright (c) 2014-2017 Exa Networks. All rights reserved. |
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7 | """ |
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8 | |||
9 | from struct import unpack |
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10 | |||
11 | from exabgp.bgp.message.notification import Notify |
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12 | |||
13 | from exabgp.bgp.message.update.attribute.bgpls.linkstate import LINKSTATE |
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14 | |||
15 | |||
16 | # This sub-TLV contains the amount of bandwidth reservable in this |
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17 | # direction on this link. Note that for oversubscription purposes, |
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18 | # this can be greater than the bandwidth of the link. |
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19 | # [ One value per priority] |
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20 | # https://tools.ietf.org/html/rfc5305#section-3.6 |
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21 | # |
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22 | # Units are in Bytes not Bits. |
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23 | # ---------------------------- |
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24 | |||
25 | |||
26 | View Code Duplication | @LINKSTATE.register() |
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27 | class UnRsvpBw(object): |
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28 | TLV = 1091 |
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29 | |||
30 | def __init__(self, unrsvpbw): |
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31 | self.unrsvpbw = unrsvpbw |
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32 | |||
33 | def __repr__(self): |
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34 | return "Maximum link bandwidth: %s" % (self.unrsvpbw) |
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35 | |||
36 | @classmethod |
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37 | def unpack(cls, data, length): |
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38 | if length != 32: |
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39 | raise Notify(3, 5, "Wrong Unreservable Bw metric size") |
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40 | |||
41 | return cls(unpack('!ffffffff', data)) |
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42 | |||
43 | def json(self, compact=None): |
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44 | return '"unreserved-bandwidth": %s' % str(self.unrsvpbw) |
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45 |