f125a8b892
This change addresses a long-standing issue in rST documentation imported from XML. That import process added backslash escapes in front of various characters. The three most common being '(', ')', and '_'. These instances are removed. Signed-off-by: Ron Stone <ronald.stone@windriver.com> Change-Id: Id43a9337ffcd505ccbdf072d7b29afdb5d2c997e
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912 B
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16 lines
912 B
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.. note::
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Controller-0 and controller-1 use IP multicast messaging for
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synchronization. If loss of synchronization occurs a few minutes after
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controller-1 becomes available, ensure that the switches and other devices
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on the management and infrastructure networks are configured with
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appropriate settings.
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In particular, if |IGMP| snooping is enabled on |ToR| switches, then a
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device acting as an |IGMP| querier is required on the network (on the same
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|VLAN|) to prevent nodes from being dropped from the multicast group. The
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|IGMP| querier periodically sends |IGMP| queries to all nodes on the
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network, and each node sends an |IGMP| join or report in response. Without
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an |IGMP| querier, the nodes do not periodically send |IGMP| join messages
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after the initial join sent when the link first goes up, and they are
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eventually dropped from the multicast group.
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